Create a Forum Account
Donate to PentaxForums.com

Forgot Password
Pentax Camera Forums Home		  
PentaxForums.com Forum Cameras Lenses Accessories Articles Groups Photos Buy/Sell Newsletter
 
PentaxForums.com → Search Forums  → 

Search Results for Liked Posts

Log in or register to remove ads.

Showing results 1 to 15 of 15 Search: Liked Posts
Forum: Pentax News and Rumors 03-29-2021, 12:23 PM  
Nokishita - K-3iii to be released on April 23?
Posted By knoxploration
Replies: 231
Views: 19,863
Real Resolution System is just an alternate name for Pixel Shift Resolution which Ricoh has been using in some markets all the way back to the system's launch in the K-3 II:

"The Real Resolution System (RRS), which applies SR for image stabilization, is a function installed in the K-3 II."
Google Translate

"The PENTAX K-3 II is now equipped with a new "Real Resolution System" (RRS) that also applies the SR unit."
Google Translate

There's also a fourth name, incidentally, which you'll see atop that second page. Dynamic Pixel Shift Resolution is also referred to sometimes as Pixel Shift Resolution System II:
Pixel Shift Resolution System II | PENTAX K-1 Mark II | RICOH IMAGING
Forum: Pentax News and Rumors 12-09-2020, 07:37 PM  
[New product story on 27 November] Product Stories of New APS-C “K-3 Mark III” Vol.6
Posted By knoxploration
Replies: 304
Views: 26,400
From his about page in December 2005, the same month Camera Labs launched: (About Camera Labs)

"Camera Labs is edited by Gordon Laing, a British technology writer and former Editor of Personal Computer World magazine in the UK. Gordon is a Personal Computer World columnist and regular contributor to PC Advisor, PC Pro, Active Home, MacUser and Computeractive magazines in the UK. He holds a degree in Physics from the University of Kent, specialises in digital imaging and has been a photographer for over two decades."



There are a couple of (potential) issues with couriering products for review internationally. (Admittedly, I'm not familiar with New Zealand's laws in this respect, however.) And to be clear, it *does* happen sometimes, but it's relatively atypical because of the potential for issues.

Firstly, review samples are frequently pre-production or early-production units that don't bear serial numbers, which is an issue for tax reasons because taxes can be due upon import unless you can prove that the exact same product (by serial number) is later exported back to its country of origin. And even if they have serial numbers, there's still paperwork to be dealt with to avoid being taxed, which can be complicated and lead to fines if that product is subsequently lost / damaged and not returned.

For those reasons, review samples are typically arranged by the manufacturer's local subsidiary or agent, rather than by head office.
Forum: Post-Processing Articles 08-30-2010, 11:31 PM  
Adobe lens profiles for Camera Raw, Photoshop CS5, Lightroom 3
Posted By knoxploration
Replies: 109
Views: 127,533
Photographers using current versions of Adobe software including Camera Raw 6.1 or later, Photoshop CS5, and Photoshop Lightroom 3 all have a useful tool at their disposal, which can correct for geometric distortion (both barrel and pincushion), chromatic aberration, and lens vignetting -- all with a minimum of fuss. The feature relies on lens profiles, which can be created by the user community. (Adobe themselves also provide a modest number of lens profiles.)

The process of creating a lens profile has been designed to be relatively straightforward, and is achieved using a free Lens Profile Creator tool available from Adobe Labs. (Full instructions are available from Adobe in their Lens Profile Creator Calibration Chart Shooting Quick Start Guide, as well as the full Calibration Chart Shooting Guide, and are beyond the scope of this article.)

While the highest-quality corrections are likely to be achieved with a profile created using your specific camera model (and indeed, your specific lens units so as to cancel out sample variations), very acceptable results can be achieved with profiles created by your fellow photographers -- even if the precise camera model differs. Profiles are specific to either Raw or developed (JPEG, etc.) files, since developed files may already have lens corrections applied to them by the camera or other processing software.

And so, the purpose of this article: to help Pentax photographers share their lens profiles, and to summarize the available profiles. Following at the end of this post is a list of known profiles for first-party and third-party lenses on Pentax camera bodies.

If you have created a profile you'd like to share, or know of somebody who has shared a profile that isn't on our list, please either contact me privately to let me know, or simply reply to this article. I'll do my best to keep the first post in the thread updated with links to the latest profiles. (If you could let me know if I have your permission to add the profile directly as an attachment to this post, that'd be helpful. So would any information on how the profile was created -- body, focal lengths, apertures used, focus distances, and whether the profile is for Raw or developed images. If you know of profiles on other sites, please don't upload somebody else's profile here without their permission -- either provide a link to the site, ask them to join and share the profile here themselves, or both.)

Even if a profile already exists, don't feel shy about submitting your own alternative profile. There's a lot of leeway in profile creation, such as for example the number of focal lengths, apertures, etc. that are included in each specific profile. Adobe's software is designed to interpolate (read: guess) how lens characteristics vary between these user-defined sample points, and so profile creation is a balance between the accuracy of the profile, and the work involved in its creation. Lens sample variation also plays a part, and so do personal user tastes. It's possible that many users may find your alternate profile more to their tastes than an already existing one... :-)

(Note: For now, I've not had a moment to ask for permission from anybody to share their profiles as attachments directly in this article, so for the time being this list consists solely of links to other posts where profiles have been shared.)

Without any further ado, following are the profiles themselves:

Pentax lenses
  • smc PENTAX DA 10-17mm F3.5-4.5 ED (IF) Fish-Eye (file type unstated, PENTAX K200D)
    Focal lengths: 3 focal lengths
    Apertures: unstated
    Focus distances: unstated

  • smc PENTAX DA 12-24mm F4.0 ED AL (IF)

  • smc PENTAX DA 14mm F2.8 (Type and camera not stated)
    Focal lengths: 14mm
    Apertures: not stated
    Focus distances: not stated

  • smc PENTAX-DA 15mm F4 ED AL Limited
    Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3

  • smc PENTAX DA 16-45mm F4.0 ED AL (Raw, PENTAX K-7)
    Focal lengths: 3 focal lengths
    Apertures: f5.6
    Focus distances: unstated

  • smc PENTAX DA*16-50mm F2.8 ED AL (IF) SDM
    • Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3

    • Ishpuini's profile (Raw, PENTAX K-7)
      Focal lengths: 16, 20, 28, 35, 50
      Apertures: f/2.8 to f/22 at one stop intervals
      Focus distances: 40cm

    • Amoringello's profile (Type not stated, Pentax K-7)
      Focal lengths: Three focal lengths
      Apertures: not stated
      Focus distances: not stated

    • wjax's profile (Raw, Pentax K-7)
      Focal lengths: Six evenly spaced focal lengths between 16mm-50mm at closer focal distance, three focal lengths (16mm, 33mm, and 50mm) at further focal distance
      Apertures: Four evenly spaced apertures from F2.8-F11
      Focus distances: Two focus distances


  • smc PENTAX FA J 18-35mm F4-5.6 AL (Raw, PENTAX K10D)
    Focal lengths: at least 4 focal lengths
    Apertures: at least 4 aperture settings (min to f11)
    Focus distances: at least 2 focus distances

  • smc PENTAX-DA 18-55mm F3.5-5.6 (Raw, Pentax K20D)
    Focal lengths: 18, 35, 55
    Apertures: f/3.5 to f/22
    Focus distances: 1 single distance

  • smc PENTAX DA 18-55mm F3.5-5.6 AL WR (Type not stated, Pentax K-7)
    Focal lengths: Three focal lengths
    Apertures: not stated
    Focus distances: not stated

  • smc PENTAX-DA 18-135mm F3.5-5.6ED AL [IF] DC WR (Raw, Pentax K-5)
    Focal lengths: 18mm, 24mm, 36mm, 53mm, 68mm, 100mm, 135mm
    Apertures: f/3.5*, f/4*, f/5.6, f/8, f/11, f/16, f/22, f/32*, f/40* (*depending on focal lengths)
    Focus distances: varied

  • smc PENTAX DA 21mm F3.2 AL Limited

  • smc PENTAX FA* 24mm F2 AL (IF) (Raw, PENTAX K10D)
    Focal lengths: 24mm
    Apertures: at least 4 aperture settings (min to f11)
    Focus distances: at least 2 focus distances

  • smc PENTAX FA 28-70mm F4 AL (Raw, PENTAX K-m [aka K2000])
    Focal lengths: 28mm, 35mm, 50mm, 70mm
    Apertures: f/4, f/8, f/16
    Focus distances: not stated

  • smc PENTAX FA 28-105mm F3.2-4.5AL (IF) (Raw, PENTAX K10D)
    Focal lengths: at least 4 focal lengths
    Apertures: at least 4 aperture settings (min to f11)
    Focus distances: at least 2 focus distances

  • smc PENTAX-FA 31mm F1.8AL Limited
    Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3

  • smc PENTAX DA 35mm F2.8 Macro Limited
    • Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3

    • mtngal's profile (Raw, PENTAX K-7)
      Focal lengths: 35mm
      Apertures: 3 apertures
      Focus distances: 2 focus distances


  • smc PENTAX-DA 40mm F2.8 Limited
    Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3

  • smc PENTAX-FA 43mm F1.9 Limited
    • Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3

    • Christine Tham's profile (Raw, PENTAX K10D)
      Focal lengths: 43mm
      Apertures: at least 4 aperture settings (min to f11)
      Focus distances: at least 2 focus distances


  • smc PENTAX DA* 50-135mm F2.8 ED (IF) SDM

  • smc PENTAX-DA 50-200mm F4-5.6 ED (Raw, Pentax K20D)
    Focal lengths: 50, 105, 200
    Apertures: f/4 to f/22
    Focus distances: 1 single distance

  • smc PENTAX-DA*55mm F1.4 SDM
    Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3

  • smc PENTAX DA 55-300mm F4-5.8 ED (Raw, PENTAX K-7)
    Focal lengths: 55, 70, 100, 200 and 300mm
    Apertures: 3 apertures
    Focus distances: Varied

  • smc PENTAX DA* 60-250mm F4 ED (IF) SDM (Raw, PENTAX K-7)

  • smc PENTAX DA 70mm F2.4 Limited
    • Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3

    • Christine Tham's profile (Raw, PENTAX K10D)
      Focal lengths: 70mm
      Apertures: at least 4 aperture settings (min to f11)
      Focus distances: at least 2 focus distances


  • smc PENTAX FA 77mm F1.8 Limited
    • Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3

    • mtngal's profile (Raw, PENTAX K-7)
      Focal lengths: 77mm
      Apertures: f1.8, f8. f18
      Focus distances: 2 distances


  • smc PENTAX-DA*200mm F2.8 ED [IF] SDM
    Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3

  • smc PENTAX-DA*300mm F4 ED [IF] SDM
    Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3

  • smc PENTAX-D FA645 55mmF2.8AL[IF] SDM AW
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

  • smc PENTAX-FA645 33-55mmF4.5AL
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

  • smc PENTAX-FA645 35mmF3.5AL
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

  • smc PENTAX-FA645 45mmF2.8
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

  • smc PENTAX-FA645 45-85mmF4.5
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

  • smc PENTAX-FA645 55-110mmF5.6
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

  • smc PENTAX-FA645 75mmF2.8
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

  • smc PENTAX-FA645 80-160mmF4.5
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

  • smc PENTAX-FA645 MACRO 120mmF4
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

  • smc PENTAX-FA645 150mmF2.8[IF]
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

  • smc PENTAX-FA645 150-300mmF5.6ED[IF]
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

  • smc PENTAX-FA645 200mmF4[IF]
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

  • smc PENTAX-FA*645 300mmF4ED[IF]
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

  • smc PENTAX-FA645 300mmF5.6ED[IF]
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

  • smc PENTAX-FA645 400mmF5.6ED[IF]
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2


Third-party lenses
  • Sigma
    • 4.5mm F2.8 EX DC CIRCULAR FISHEYE
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 8mm F3.5 EX DG CIRCULAR FISHEYE
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 8-16mm F4.5-5.6 DC HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 10mm F2.8 EX DC FISHEYE HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 10-20mm F3.5 EX DC HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 10-20mm F4-5.6 EX DC / HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 12-24mm F4.5-5.6 EX DG ASPHERICAL / HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 15mm F2.8 EX DG DIAGONAL FISHEYE
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 17-50mm F2.8 EX DC OS HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 17-70mm F2.8-4 DC MACRO OS HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 17-70mm F2.8-4.5 DC MACRO / HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 18-50mm F2.8 EX DC MACRO / HSM
      • Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

      • Christine Tham's profile (Raw, PENTAX K10D)
        Focal lengths: at least 4 focal lengths
        Apertures: at least 4 aperture settings (min to f11)
        Focus distances: at least 2 focus distances


    • 18-50mm F2.8-4.5 DC OS HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 18-125mm F3.8-5.6 DC OS HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 18-200mm F3.5-6.3 DC
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 18-250mm F3.5-6.3 DC OS HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 20mm F1.8 EX DG ASPHERICAL RF
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 24mm F1.8 EX DG ASPHERICAL MACRO
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 24-70mm F2.8 EX DG MACRO
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 24-70mm F2.8 IF EX DG HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 28mm F1.8 EX DG ASPHERICAL MACRO
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 28-70mm F2.8-4 DG
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 28-300mm F3.5-6.3 DG MACRO
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 30mm F1.4 EX DC / HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 50mm F1.4 EX DG HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • APO 50-150mm F2.8 II EX DC HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 50-200mm F4-5.6 DC OS HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • MACRO 50mm F2.8 EX DG
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • APO 50-500mm F4-6.3 EX DG / HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • APO 50-500mm F4.5-6.3 DG OS HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • MACRO 70mm F2.8 EX DG
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • APO 70-200mm F2.8 EX DG OS HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • APO 70-200mm F2.8 II EX DG MACRO HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 70-300mm F4-5.6 DG MACRO
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 70-300mm F4-5.6 DG OS
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • APO 70-300mm F4-5.6 DG MACRO
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • 85mm F1.4 EX DG HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • APO 100-300mm F4 EX DG / HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • MACRO 105mm F2.8 EX DG
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • APO 120-400mm F4.5-5.6 DG OS HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • APO 150-500mm F5-6.3 DG OS HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • APO MACRO 180mm F3.5 EX DG / HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • APO 300mm F2.8 EX DG / HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • APO 500mm F4.5 EX DG / HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0

    • APO 800mm F5.6 EX DG / HSM
      Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0


  • Tamron
    • SP 10-24mm F/3.5-4.5 DiII B001P
      Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

    • SP 17-50mm F/2.8 DiII A16P
      Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

    • 18-200mm F/3.5-6.3 DiII A14P
      Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

    • 18-250mm F/3.5-6.3 DiII A18P
      Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

    • SP 28-75mm F/2.8 Di A09P
      Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

    • 28-200mm F/3.8-5.6 Di A031P
      Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

    • AF 28-300mm F/3.5-6.3 XR Di LD Aspherical [IF] Macro (A061) (Raw, PENTAX K10D)
      Focal lengths: at least 4 focal lengths
      Apertures: at least 4 aperture settings (min to f11)
      Focus distances: at least 2 focus distances

    • 28-300mm F/3.5-6.3 Di A061P
      Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

    • SP 70-200mm F/2.8 Di A001P
      Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

    • 70-300mm F/4-5.6 Di A17P
      Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

    • SP 90mm F/2.8 Di MACRO 1:1 272EP
      Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2



(Edit: Still to do: Tidy up the formatting, add info on where to put the profiles for different apps / operating systems, include direct links to zipped attachments and request permission from profile authors to re-upload their profiles where they're not already zipped. *Phew!*) ;-)
Forum: Pentax DSLR Discussion 01-19-2011, 09:02 AM  
Pentax K7 3rd party battery grip
Posted By knoxploration
Replies: 242
Views: 86,331
I've lived on three continents, so I'm pretty familiar with perceptions of different currencies around the world.

I think it's safe to say when you make a statement in dollars without mentioning the currency, few members of this forum who aren't already aware of your location will assume you're talking about Australian dollars -- and that most will likely assume you mean US dollars, if they try to make a guess.



US population: 307,006,550
Australia population: 21,874,900
Netherlands population: 16,531,294
Mythical "Netheralia" combined population: 38,406,194 ;-)
"Netheralia" size compared to US population: 12.5%

This is, by and large, an English-speaking forum. The United States is -- far and away -- the largest population of native English-language speakers in the world. (It's still the largest even when you consider people speaking English as a second language, although India isn't too terribly far behind, apparently. Australia just barely scrapes into the top ten.)

Yes, I'm sure there are a few places here or there which have price disparities for the official Pentax grip. I'm equally sure there are places where the cheap knock-offs aren't as cheap as they should be. I can't confirm the validity of your claimed price, because I don't live in Australia, and hence don't know which retailers offer good values there, and which are gouging. Could be you're right and Australia is charging double the typical price for that grip. From my point of view, though, it could equally be that you don't know where the official grip is best priced in Australia.

That's all beside the point, though, which is that given the populations above, most forum members likely don't have anywhere near as large a price differential as a few members here seem to, and for most people, it's not even remotely close to the truth to claim you could afford a lens for the price difference.
Forum: Pentax DSLR Discussion 01-20-2011, 03:19 PM  
The best feature you didn't know your camera had, until...
Posted By knoxploration
Replies: 25
Views: 6,103
It seems like every modern consumer product I own, I end up participating in (or starting) one of these threads. Last one was for my car, when I suddenly discovered the sunroof slider switch also pressed in like a button, tilting the sunroof -- a feature I'd believed my car not to have, in several years of ownership.

Today, my Pentax K-7 surprised me in exactly the same way. Well, other than in having a tilting sunroof. Doesn't have one of those. ;-) What it does have, though, is an alternate method of controlling playback zoom, which I never knew existed.

It won't work for the initial step of zoom -- you have to first zoom in at least one step with the rear dial. Once you've reached that point, though, you can use the exposure compensation button to zoom in, and the green button to zoom out, saving RSI that you'd otherwise cause spinning the rear dial back and forth. You can also press the OK button to return a full-image view, which I knew, but it never occurred to me to try these other buttons when zoomed in. (From playing with a K-5, I also discovered that it lets you return to a full image view with a press of the AE-L button, which does nothing in playback mode on my K-7.)

So, there you go. I'm sure it's in the manual somewhere, and many of you may already know of this -- I must've missed it myself. Hopefully this is helpful news to some of you though, and it brings me back to the main question of my thread... What's the best feature on your camera that you didn't initially realize it had? Seems to me that quite often threads like these help us find (and use) more features of our own cameras -- not to mention feel less dumb for failing to find features that might otherwise seem obvious. ;-)
Forum: Post-Processing Articles 08-31-2010, 08:46 AM  
Adobe lens profiles for Camera Raw, Photoshop CS5, Lightroom 3
Posted By knoxploration
Replies: 109
Views: 127,533
Thanks a bunch, I've got these on my list to add. (Need to filter through and confirm which are available in Pentax-mount form.)

If you could add a prominent link from the first post in your thread, that'd help people to find this article, too. :)
Forum: Pentax K-5 & K-5 II 10-03-2010, 08:40 AM  
Pentax K-5 Web Site
Posted By knoxploration
Replies: 36
Views: 17,829
The mechanical shutter stays open, but you use what's called an electronic shutter instead, achieved using the image sensor itself. On-chip circuitry allows it to finalize the exposure as if the shutter had closed, and the image can then be read off.

You can consider each frame of the video to be a still image, and so each frame has its own exposure level -- and by adjusting the shutter speed and gain, you can affect that exposure level without changing the aperture.

Shutter speed has one important impact for video, though. In the same way as with a still image, a fast shutter speed freezes motion, and a slow one blurs it. Thing is, with a video, you've got a fixed frame rate -- so if you have moving subjects and you freeze their motion with a high shutter speed, then there are noticeable "steps" in the position of the subject between frames, without blurring that tells your eye the subject is moving. The result is that the final video can look choppy / stuttery, so it's generally desirable to use a slower shutter speed. (If you're wanting to extract still images from the video frames, then it can conversely be desirable to have a high shutter speed and reduced motion blur.)
Forum: Pentax News and Rumors 09-26-2010, 09:45 AM  
Pentax at Photokina coverage by Falk Lumo!
Posted By knoxploration
Replies: 549
Views: 137,466
Agree completely. If somebody posted something and then wants to retract it, they should state what they're retracting. It's not right that posts should be edited once they've been replied to, because it changes the complexion of the conversation, and perhaps seems to make invalid the replies that were based on the earlier post.
Forum: Pentax News and Rumors 09-26-2010, 09:10 AM  
Pentax at Photokina coverage by Falk Lumo!
Posted By knoxploration
Replies: 549
Views: 137,466
And yet you've chosen to attack a member who posted something referenced, citing the specific document from which his information came, rather than the member earlier in the thread who posted the original rumor to which Falk was posting a clarification based on a specific citation.

The fact of the matter here is that Falk cited information that you personally don't believe, and so you've chosen to publicly attack him with absolutely no information whatsoever to back up your own assertions. Falk states that a Pentax-provided document states that these lenses are now EOL (end-of-life) in the German market. Care to provide any source showing that this is *not* the case?

If you can't do so, why not give him the opportunity to provide further information (either on the record, or privately outside the forum) backing this up, before making a personal attack on another member's character?



The member in question hasn't made a single post of any kind on this forum since two hours before you made your personal attack, a fact you could easily verify yourself.

Are you seriously suggesting that because he hasn't participated in the forum for a few hours, he must therefore somehow be hiding from answering you?

Or are you simply clutching at straws in an attempt to support your extremely inappropriate, personal attack as member of this site's staff, who should know far better, and take the time to contact the member outside of this thread before posting inflammatory remarks without any information to back up your own assertions?
Forum: Pentax News and Rumors 09-07-2010, 10:42 PM  
Brief info about K-5 and KR
Posted By knoxploration
Replies: 569
Views: 141,090
You're correct, and it's an important point.

The difference in linear resolution between a twelve megapixel camera and a fourteen megapixel one is a paltry 8%. Compared to its twelve megapixel equivalent, there are only an extra 320 pixel columns, and 240 pixel rows, in each fourteen megapixel image.

To get that extra 8% of resolution, you lose a little over 14% of the available area per pixel, though -- and the reduction in active (photodiode) area is even greater, because without switching to a smaller process size, the wiring area per pixel remains unchanged. Gapless microlenses can help to some degree, but they're not perfect, and the smaller the pixel size, the harder it gets to fabricate perfect microlenses.

So you're gathering a noticeably lesser amount of light per pixel, thereby decreasing the signal to noise ratio appreciably, and getting noisier images as a result -- all for an increase in resolution that's arguably not even noticeable on-screen or in-print.

Personally, my own preference would've been for the megapixel war to end at around six megapixels for compacts, and ten to twelve megapixels for APS-C DSLRs. More than that is overkill, for the sizes most people are printing at (and the amount of cropping they do). All it does is reduce image quality, increase the storage space taken up for images, decrease the battery life and possibly the burst depth of the camera (perhaps the frame rate too, if the camera's mechanics aren't the limiting factor), and increase the CPU power required to process each image on your PC. A whole lot of negatives, for very little positive.
Forum: Pentax News and Rumors 08-22-2010, 08:39 AM  
Brief info about K-5 and KR
Posted By knoxploration
Replies: 569
Views: 141,090
Will these be materializing before, or after, the Samsung GX-30 that you claimed was imminent in mid-2009?

How about the full-frame camera, 8-9fps APS-C camera, and micro-APS system cameras that you also claimed would be shipping in 2010?

Or are you simply posting wish lists, or trying to start a rumor with no foundation in fact?
Forum: Pentax DSLR Discussion 07-21-2010, 12:05 PM  
Pentax K-7 Quality Control
Posted By knoxploration
Replies: 60
Views: 11,934
Depends on the definition of dim, and whether every camera is basically identical. (We have a sample size of three here, of which two are identical, and one is claimed to be different, but was examined in a store at a totally different locale, not a real-world shooting location).

Dim AF points are not a significant defect if they're present on every camera (or even if they're present on most cameras). They don't prevent you using the product, and don't prevent you knowing which AF points were illuminated. They're just slightly less pretty. (I know, my own are somewhat dim and uneven, and I've not hit a single situation where I had difficulty seeing them.)



I wouldn't be surprised -- there are plenty of pointless laws on the books -- but I've not heard of this myself. Why would that be the case, and do you have a citation? If you've refunded the consumer fully, what possible reason is there for legally requiring you to continue to do business with a consumer who repeatedly returns products that aren't defective? I can see it maybe vaguely making sense if you're the sole distributor for a product (or type of product), but not when there are dozens or hundreds of retailers to choose from for the very same product, and tens or hundreds of thousands carrying near-identical competing products.



I didn't say it was the retailer who suffered. It's not. It is the end user who suffers. Where do you think Pentax's money comes from? Us, buying their products and services. If people return products that aren't defective (and yes, this is a pet peeve of mine -- obsessive returns, or even people ordering products just to try them out and then send them back), that makes the products more expensive for the rest of us. Pentax still isn't allowed to sell those perfect cameras as new again, they have to be sold as refurbs, meaning not only the loss of money in sending the product to the retailer, then the consumer, then back all the way again and refunding them, but also means the product itself can no longer be sold at full price. A significant chunk of its cost (and probably most if not all of the profit from it) has been flushed down the toilet.
Forum: Pentax DSLR Discussion 06-13-2010, 06:54 PM  
Why is there no
Posted By knoxploration
Replies: 28
Views: 4,785
Can't vouch for the K20D, but the K-7 definitively does tell you if there is no card in the camera -- it just only does it in certain circumstances.

If the card has been removed while the camera is switched on, and you then close the card compartment door and half-press the shutter to bring the K-7 back to life, it will state "No card in camera" on the rear LCD. If you power the camera off and back on again, though, or remove the card while powered off, you'll get no warning until after you try to capture an image -- and that warning won't remain after the image review disappears, either.

It's perhaps a slightly inconsistent behaviour, and it'd probably be nicer to have the warning all the time, but there's another way to tell, so it's not the end of the world. Both the top-panel LCD display and the rear info display will show "---" for the images remaining when there's no card in the camera. A quick glance at that indicator will tell you all you need to know.
Forum: Pentax News and Rumors 05-07-2010, 08:27 AM  
Good news from Hoya - SLR sales "sharply increased"
Posted By knoxploration
Replies: 44
Views: 11,944
They mean sales of 25.92 billion yen (US$283.5 million), and an operating profit of 1.331 billion yen (US$14.5 million).
Forum: Flashes, Lighting, and Studio 04-21-2010, 09:46 AM  
Pentax P-TTL Flash Comparison
Posted By knoxploration
Replies: 134
Views: 89,834
That would depend on the photos you're taking, really. (And the Pentax strobe would be stronger at all angles, *until* the extra zoom of the Metz defeated its advantage.)
Search took 0.02 seconds | Showing results 1 to 15 of 15

 
Forum Jump

Style Selector
   
Contact Us - Pentax Forums Home - Site Map - Top

All times are GMT -7. The time now is 10:25 AM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top