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Showing results 1 to 14 of 14 Search: Liked Posts
Forum: Flashes, Lighting, and Studio 04-27-2014, 05:16 PM  
Cactus V6 Radio Trigger Review
Posted By Class A
Replies: 244
Views: 39,046
I finally got around doing my HSS test:



The image shows:
  1. Ambient light only, purposefully underexposed (1/750s at f/4.5).

  2. Ambient Light + Key Light (gelled RF60 in HSS mode into a reflector, camera left).

  3. Ambient Light + Key Light + Backlight (RF60 in HSS mode from under and behind the bottle).

  4. No flashes at all, just regular Av exposure.

It got later than I intended and hence I started to get some evening sky glow already, but as you can see this only shows when you purposefully underexpose the ambient light (through a high shutter speed) and then artificially light the subject.

As I expected I had to go rather high with the flash power levels. I think I was at 1/1 but at least 1/2. In HSS mode, a speedlight loses quite a bit of power because the energy has to distributed over a "long" burst of short pulses in order to achieve the length required.

The "remarkable" aspect of the image is that I used two non-P-TTL flashes off-camera that contributed to the exposure despite the fact that the shutter speed was beyond 1/180s. I achieved that by using a P-TTL flash on-camera (Metz 58 AF-2) and triggered optically with a V6 from the pre-flash. By setting a delay (95ms for my K100D) on the V6, I then got the V6 to trigger the two off-camera RF60 just in time before the shutter opened. Because the RF60 were in HSS mode, I could use smaller power levels (such as 1/2 and 1/4) and still see their contribution in the frame.

I never thought I'd use this feature much, but when setting up this shot I actually made use of the zoom setting remote control with the V6. This made it easy to try different zoom settings for the "backlight" flash without removing it from under the bottle every time.
Forum: Pentax Price Watch 03-25-2014, 01:42 PM  
Wow - Sigma 17-50mm F2.8 for $469
Posted By Adam
Replies: 32
Views: 5,279
The new ones are able to unambiguously identify themselves, yes.
Forum: Pentax News and Rumors 02-24-2014, 09:45 AM  
TC and Flucard delivery
Posted By Jenso
Replies: 53
Views: 9,821
As to resolution (and some other impressions), I shot some examples via MacBook:

1. These are the optional resolutions shown:

2. LiveView on MacBook:

3. ImageView on MacBook:

4. Same Image, imported on that Mac and watched by Apple's Aperture:
Forum: Lens Clubs 11-01-2013, 06:44 AM  
Post your ƒ1.2 Photos! (ƒ1.2 ONLY!)
Posted By ivrabec985
Replies: 2,087
Views: 525,314
hey :)
i got last night SMC Pentax 50mm F1.2 and today i went to test my skills at F1.2, and it's hard :D
but it has that SOMETHING special about it :)

here's my old pug Boni.





Forum: Pentax K-3 & K-3 II 11-01-2013, 02:42 PM  
K3 sample shots ... post here !
Posted By Azzy
Replies: 12,379
Views: 1,655,222
Had a chance to test the DR of ISO100

Baseline


5 Stop underexposed shot:


Pushed in LR +5 EV, +23 contrast, +100 Shadow. +45 white, +29 Blacks. Lots of monochromatic noise at 1:1, at 1:2 which mimic K-5 res it looks about the same as K-5
Forum: Pentax News and Rumors 01-09-2013, 06:10 PM  
MX1 new Camera model
Posted By Quicksand
Replies: 486
Views: 63,511
Probably Ricoh and Pentax are controlled by the Illuminati, who clearly wish to suppress Pentaxians to achieve their own nefarious objectives in the New World Order.

WE MUST FIGHT.

Come on, we can't take this sitting dQ#$%***

NO CARRIER
Forum: Lens Clubs 09-22-2012, 01:27 PM  
Post your ƒ1.2 Photos! (ƒ1.2 ONLY!)
Posted By Designosophy
Replies: 2,087
Views: 525,314
A few from last night with my beat-up K 50 f/1.2.


Gryffindor by Designosophy, on Flickr


Severus by Designosophy, on Flickr


Severus by Designosophy, on Flickr
Forum: Pentax K-30 & K-50 09-14-2012, 09:21 PM  
Water resistant my ass
Posted By Heie
Replies: 169
Views: 43,351
The fact of the matter is that anything created by man is, by nature, imperfect. This includes the systems that create the products themselves (i.e. factories that create cameras). By realizing this, the ensuing understanding is that, unfortunately, you probably have a poorly finished end-product (read=compromised, less-then-originally-engineered sealing). Cars, computers, batteries, etc are recalled every year - it sucks, but it happens and is just a fact of life that you will ultimately have to come to terms with. But while that is true, I can assert that there is enough evidence to counter any claims of less-than-satisfactory weather sealing capabilities regarding Pentax products.






I can personally assure you that the weather sealing claims are very real, and in my experience are not touted enough. I have emailed Pentax (to no response, unfortunately) stating that I believe they need to do more to advertise the weather sealing claims, and the most legitimate way to do this is by using the internationally recognized IP Codes (see here for a much more detailed explanation). These are industry standard, regardless of the industry involved, and are also the standards used for evaluating critical pieces of gear/equipment for military usage (as the military demands the highest levels of durability, as one would expect). Using these codes, I have personally assessed the weather sealed bodies (I own a K-5 and K-7) when combined with a WR/AW/DA* lens to be, at a minimum, IP55W. AW and DA* will have a higher degree of sealing against water and dust, but the difference between 4 and 5 is enough that I would categorize WR as 5 (just barely) as well. What this means is:
  • IP - Ingress Protection Rating, sometimes also interpreted as International Protection Rating (mandatory prefix to coding)

  • 5 - Dust Protected - Ingress of dust is not entirely prevented, but it must not enter in sufficient quantity to interfere with the satisfactory operation of the equipment; complete protection against contact

  • 5 - Water Jets - Water projected by a nozzle (6.3mm) against enclosure from any direction shall have no harmful effects.
    • Test duration: at least 3 minutes

    • Water volume: 12.5 litres per minute

    • Pressure: 30 kPa at distance of 3m


  • W - Weather Conditions

*Disclaimer: I have not personally had access to a "6.3mm, 12.5 L/m, 30 kPa nozzle," however I believe that a highly pressurized showerhead more than suffices for this.

Here is a testimonial from another Pentax user (who luckily has insider access somehow...lucky bastard...)



The intent behind the aforementioned email to Pentax is that it is my personal opinion that Pentax should lead the industry by publishing their confidence in their equipment as rated to an internationally recognized standard. This would make Pentax the very first camera company to do so for DSLR's, and would help further the credibility of Pentax's purported claims (which still are dubious at best to many). As a 100% private user (i.e. not paid by Pentax in anyway), I stand by the above standard (IP55W), and all experiences have been through personally owned cameras.

I believe I can venture to say that I have abused my cameras--both intentionally and unintentionally--worse than 95% of Pentax's userbase.

The following examples should provide enough documentation and evidence to support that claim. For those of you who have seen these before, I apologize for a lot of self-plagiurizing/-summarizing.

Intentionally:




  • This was actually the second iteration I did that day (I screwed up the first shoot), and now, over 3.5 months later (this was made in the beginning of July and is not mid September), I have never had a single issue with either camera or the lenses. No sand inside any of the dials, buttons, etc. The flash got "stuck" on the K-7 in the video because sand had gotten under it (it is weather sealed also, but obviously not the space between it and the camera), so once I raised it up manually, it was good to go, and today it feels as if I just bought it - springy as ever. Come winter time I plan to do a sequal to that weather sealing video - I'll save the details to keep it a surprise ;) Also, you have to remember, that natural rain hardly ever has the same intensity and pressure as a full blown shower head - I have lived through plenty of hurricanes and I can promise you that whatever rain you are thinking of will at best match the water's intensity that you saw in that video I made. And that would be unbelievably rare when it does happen.
















You Tube



  • I can't count the amount of times I have poured water from liter+ bottles, sinks, shower heads and even a hose once just to freak photographer friends out (which makes your 2 oz splash on the backside seem like merely spitting on it).

  • Using the above methods to legitimately clean off my cameras after getting them extremely dirty from being in the elements.

Unintentionally:
  • Do you see the large rectangular pouch that my left arm is resting on? Inside is my Pentax K-5 + mounted DA* 55 that I took on a nighttime helicopter raid mission I considered bringing the Sigma 30 since they both share an aperture of f/1.4 while the Sigma is considerably wider, but ultimately went with the 55 because of the weather and dust sealing. The next morning, I was so glad that I did - the helicopter that was coming to pick us up overshot the PZ (Pickup Zone) and flew RIGHT. OVER. us and pelted us with not just dust, but rocks. It was a CH-47 Chinook, which is the largest and most powerful helicopter in the Army's arsenal. Couple that with double rotors, and holy rotor wash lol. The camera and lens were so caked in dust and sand it was actually pretty shocking since it was inside the pouch. So I was very glad I took the 55 and not the unsealed Sigma 30. This was later cleaned under a shower head.









  • This was taken by me in Afghanistan during a dust storm at approximately 1300h (1 PM), a time when it is so bright it is still painful wearing sunglasses at times. Pentax K-5, DA* 50-135









  • This was also taken by me, but in a thunderstorm - the first few photos were ruined because there was so much water on the lens element that I didn't notice at first. Thankfully I did quickly and cleaned it. Pentax K-5, DA* 16-50









  • I have taken my camera running - yes, literally running, and not in a bag/pack - just the strap across my shoulder or holding the grip in my hand. I was leading a physical training event in the rain at around 0400 as I was the lead trainer of 10 soldiers that were being trained to attend an elite military school that I had recently graduated from. Here's a photo taken from that morning, 2 hours into the rain soaked PT session (yes, those lucky few were carrying the 135kg/300lb+ boat the entire way the entire time). Pentax K-5, DA 18-55 WR









  • I have had my camera in a turret (unsecured/not tied down) while being the gunner during a mounted vehicle convoy. Because I am sure the question will arise: no, photography was obviously never my priority - it was just to catch opportunity shots, and I shot pics through the bullet proof observation windows of the turret - I never put myself at unnecessary risk. At one point we were fired upon by enemy insurgents, at which point I fired back and the links and shell casings from my .50 caliber machine gun fell on the unprotected camera/lens. Again, this had to be cleaned under a shower head to be cleaned from all the dust and sand that covered the body and lens. Picture is of the K-5 + D-BG4 Battery Grip, DA* 60-250









  • Most recently I have resorted to taking my K-5 on combat patrols (similar in fashion to the Night Vision image above) in a drop-leg holster (Lowepro Zoom 55 AW, which is a perfect fit for the gripped K-5 + DA* 60-250 with reversed hood) as I operate in an advisory role patrolling among Afghan soldiers. Yes my primary "weapon" is an actual rifle, not the camera, which is kept within the holster except for 15 sec intervals of quick-removal,-picture,-replacement-into-holster. Yes, as you can imagine, the same cleaning treatment is given upon return to base each time.

Others' Testimonials:



















Finally see this thread and focus on posts 4 & 5 - I collected approximately 100 photos taken of/with Pentax DSLR's in extremely adverse environments:

Post your WR picture [Page 1]: Pentax SLR Talk Forum: Digital Photography Review

In conclusion, I think it is extremely immature, shortsighted, and reactionary to exclaim "water resistant my ass!" without being a responsible consumer who does his research. Ultimately all you have accomplished is placing a completely unwarranted and undeserving stigma upon a company that has otherwise delivered far beyond their claims of 'weather resistance." Like I said - there is no such thing as the perfect factory/assembly line - some products will inevitably fail and you probably just got one from a bad batch - it happens. Sucks, and I'm sorry it did, but have faith that that is not the norm. Far from it:



-Heie
Forum: Pentax Q 08-01-2012, 07:16 AM  
The Pentax Q - a real World user review
Posted By pinholecam
Replies: 71
Views: 43,233
This is a cut and paste of what I wrote up in the local forums, so apologies ahead if there are certain local terms that may be hard to understand.


The Pentax Q - a real World user review


Pentax Q with Fisheye (Toy) lens


In Jun2011, Pentax launched a small Mirrorless Interchangeable Lens Camera (MILC) called the Q.
At that time it had a launch price of ~S$1000 with standard prime lens.
A prohibitive price indeed for a small sensor camera.

The camera is the first to use the company's Q mount and features a compact-camera-sized 1/2.3" image stabilized CMOS sensor.
This is wrapped in a magnesium alloy body no more than 98 x 57.5 x 31 mm.

Being its first foray into the MILC market and without foresight of future MILC products to come, many pundits assumed it was Pentax’s only answer to the growing mirrorless market and compared it unfavorably to existing larger sensor offerings as well as DSLRs.
Pentax, to them had certainly “missed the point”.


My interest in the camera was with its potential for unobtrusive street shots (with plenty of DOF) as well as its unique 5.5x crop capability due to its small sensor when used with adapted lenses which Pentax envisaged and promised a 2012 release of a OEM adapter to use for its DSLR K-mount lenses.
At that time, launch price was too prohibitive to buy one on an unproved 'theory' so I passed on purchasing.
But now that the price has come down to be close to other advanced compacts, I've finally got one.


I'd like to just cover more on what I'd call 'a real world user review', so more of what a user expects and can get from the camera in actual field use.
There are many sites out there which deal with the specs side of cameras and how they perform on paper, so I'd let them deal with those matters.
Photography BLOG did a review : Pentax Q Review | PhotographyBLOG
DPReview did a Preview : Pentax Q Hands-on Preview: Digital Photography Review


Specs :

* 12.4MP back-illuminated CMOS sensor (1/2.3" size - 6.17 x 4.55 mm)
* Q-mount interchangeable lens mount
* 12-bit DNG raw file option
* 3" 460,000 dot LCD
* Sensor-shift image stabilization and dust-removal
* 1080p30 HD movie recording in H.264 format
* 5 frame-per-second continuous shooting capability
* Quick-dial control giving access to four image settings
* In-camera HDR option blends three images
* Built-in flash
* Flash hot shoe (also used for mounting optional viewfinder)
* Front and rear IR remote sensors


Looks/Size


Compared to a Samsung Galaxy Note

The first thing that grabs attention is the size. Its very small indeed.
Next thing that strikes me is its very solid feel.
It feels really well made, firm/solid.
Perhaps the best relation I can draw to would be a Ricoh GXR.
The wealth of buttons for fast access is also a welcome feature for the camera.



Dial selector on the front allows custom picture settings to be assigned and switch at an instant



Large 3" LCD and quite a few buttons for fast access to often used features



Top view showing off the mode dial, scroll wheel, play button, etc
Forum: Canon, Nikon, Sony, and Other Camera Brands 06-20-2012, 04:03 AM  
41 Megapixel Nokia 808 smartphone camera
Posted By falconeye
Replies: 375
Views: 78,292
The upscaled 5DmkIII images are oversharpened. There is no way to directly compare the samples provided.

I had a look at the 808 in my blog:
-> Falk Lumo: The iCamera (Nokia 808 Pureview) Part I

There you find its 35mm-equivalent properties.

At the wide end (where it uses all its pixels), it is 27.7mm F/8.3 (35mm-equivalent) and clearly not limited by diffraction. The camera has no Bayer-AA filter and should be compared to a Nikon D800E with aperture set to F/8.3 when it comes to diffraction effects. The latter has certainly no trouble to resolve its 36MP at that aperture although it is sharper at F/4.5. I.e., it does require some sharpening in post.


Simply false
Forum: Photographic Technique 05-27-2012, 07:09 AM  
3 things you wish you knew when you started
Posted By DAZ
Replies: 86
Views: 12,320
1. Photography is not reality, it just sometime resembles reality.

2. It is not knowing what to capture but knowing what to throw away, but the more you capture the more you have to choose from when you throw it away. See number 1.

3. It is all a compromise and you can't maximize everything. See number 2.

DAZ
Forum: Lens Clubs 05-30-2012, 08:45 AM  
Post your ƒ1.2 Photos! (ƒ1.2 ONLY!)
Posted By Porga
Replies: 2,087
Views: 525,314

Untitled by BambaataaRR, on Flickr


A flight of fancy by BambaataaRR, on Flickr

Two from K-5 &
Revuenon 55mm f1.2 @ f1.2
Forum: Pentax News and Rumors 04-18-2012, 05:14 PM  
Lens prices and our channel strategy in the U.S. - Ned Responses
Posted By ElJamoquio
Replies: 716
Views: 64,830
Let's all remember our common enemy: the Judean People's fr... er, Pentax USA!!!!!
Forum: Pentax K-5 & K-5 II 11-04-2011, 07:03 AM  
PENTAX Power (Some HD bird photos)
Posted By ogunturkay
Replies: 39
Views: 7,519
PENTAX K-5 + Sigma 50-500mm F4.5-6.3 APO DG OS HSM

Phylloscopus collybita - Chiffchaff



Podiceps nigricollis - Black-necked grebe



Garrulus glandarius - Jay



Alcedo atthis - Kingfisher





Thanks to all visitors at present. Regards...

http://vimeo.com/groups/wwf/videos/31413529

--
Ogun Caglayan Turkay
Ogun Caglayan Turkay's Photo Portfolio
Life calls out to us... - Life. Nature. You. Make the connection. on Vimeo
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