Forgot Password
Pentax Camera Forums Home
 
Log in or register to remove ads.

Showing results 1 to 25 of 49 Search: Liked Posts
Forum: Troubleshooting and Beginner Help 02-06-2015, 06:14 AM  
K3 - low image quality, no sharp, too much noise
Posted By Parallax
Replies: 109
Views: 10,792
That crossed the line to just plain trolling. This thread is done.
:closed:
Forum: Pentax News and Rumors 02-05-2015, 09:16 PM  
K-S2 is Coming
Posted By JimC1101
Replies: 847
Views: 114,585
Wow.....I guess Pentax is not doomed after all. :):)


I think Pentax will be the big winner at CP+ this year, The sleeping giant has definitely awoken :)
Forum: Pentax Full Frame 02-03-2015, 11:39 AM  
Poll: My budget for FF..........
Posted By LaurenOE
Replies: 107
Views: 11,834
Since I already have a ton of FF glass, I will pick up a lens and body as soon as they are available.
I have waited too long for this to happen.
I will probably cry a little fan-girl tear when I finally hold the FF in my hands.
(I won't explain that if you don't understand)

:)
Forum: Post Your Photos! 02-01-2015, 09:55 AM  
People I Made My First Movie Poster.... ;)
Posted By Heie
Replies: 20
Views: 3,191
Soooooooooooooooooo, here's my latest photo, featuring my wife and I ;)

Attachment 257081

We spent over an hour actually setting everything up and then my wife spent a while making it into an actual movie poster lol. I'll post a full BTS in the next few days, I just wanted to share it as soon as possible (what? I'm excited :D ).

-Heie
Forum: Photographic Industry and Professionals 01-29-2015, 09:33 AM  
makeup artist tripled my work flow.
Posted By Parallax
Replies: 34
Views: 4,777
He was just trying to be helpful. I was under the impression that you thought unsolicited critique of someones work was perfectly acceptable. :confused2:
Forum: Pentax DSLR Discussion 01-28-2015, 10:07 AM  
Am I making the right choice?
Posted By mrNewt
Replies: 130
Views: 11,715
Tell your clients you are shooting with multiple systems and you always bring the gear that is the best suited for the light conditions on that specific day to make sure you will get the best out of it.

Then bring your Pentax gear :).

If they ask "Pentax!?", just tell them "Yes! For today, this camera, at this location and with this light will give me the best results and provide you with amazing image quality that you can cherish forever."

:lol:
Forum: Pentax Compact Cameras 01-17-2015, 11:54 AM  
MX-1 macro using a reversed lens ...
Posted By zman
Replies: 7
Views: 2,125
While experimenting on how to capture snowflake images, here's a variation of a method I found on the internet. I use a 2" to 2" rubber PVC connector with its hose clamps. This size connector fit an old Minolta 50mm lens I had lying around and it also fit snugly over the base on the lens on my MX-1. There's not enough material for the connector clamp to grab onto the MX-1, so even though it is snug you do have to hold it with your hand, otherwise the weight of the lens may cause it to fall. I extend the MX-1 lens to full zoom to maximize my magnification.

The image of your subject comes out within a black circle, but is easily cropped out. It didn't work as well for snowflakes as my K5 set-up, but I thought I'd pass along the method in case someone would like to experiment themselves. It's very inexpensive to try.
Forum: Mini-Challenges, Games, and Photo Stories 01-16-2015, 12:04 PM  
Post-Processing PP Challenge 134 - Flathead River
Posted By Parallax
Replies: 21
Views: 2,973
I guess I misunderstood the purpose of the thread. I thought it was simply a contest. Thanks so much for critiquing my entry and for the PP tutorial. I choose not to comment on yours.
Forum: Pentax K-3 & K-3 II 03-06-2014, 08:43 PM  
Pentax K-3 High ISO test.
Posted By dosdan
Replies: 107
Views: 13,323
Stagnant, the AR of your test image is 2.16:1. This indicates you've already cropped the original image. Can you please indicate whether this is a 100% crop, or what percentage of the original frame you cropped off the H & W of the original frame? When discussing the visibility of noise, the proportion of the frame used and any resizing is important.

See what I mean here: https://www.pentaxforums.com/forums/172-pentax-k-3/242969-sports-images-k-3-a-3.html#post2710908




BTW, any APS-C at ISO12800, unless resized to a quite small size, is going to look poor without drastic invention. ISO12800 is due purely to digital gain. (Analogue gain is not used at high ISOs because image shot noise at this level is, by far, the dominant noise source.) Compared to ISO100, you are using 128x gain. This means individual sensels have collected only 1/128th of the photo-electrons for the same rendering brightness level (e.g. the exposure was 7 stops lower due to the weak scene luminance level, requiring 7 stops more digital gain to produce the same image rendering brightness level) . So if a sensel holds 30,000 photo-electrons at FWC (usually defined as the 3% non-linearity point - November ) at ISO100, at ISO12800 that sensel will only be able to hold approx. 238 photo-electrons before the ADC clips.

Photonic shot noise (an intrinsic property of light and other forms of radiation) is the square-root of the number of photo-electrons. And the wanted-signal-to-shot-noise ratio is also the sq-root of the number of photo-electons. This means that, compared to ISO100, ISO12800 will have an 11.3x worse SNR (sq-root of 1:128), e.g. 173:1 (at ISO100; sq-root of 30,000) vs 15.4:1 (at ISO12800; sq-root of 238).
Forum: Pentax SLR Lens Discussion 02-27-2014, 06:00 PM  
Wide angle lens recommendation
Posted By DSims
Replies: 45
Views: 4,899
I have to strongly disagree with you on this one. Ultra wide angle lenses for APS-C are by far the worst class of lens (IQ-wise) on DSLRs.

I carefully studied the DA12-24 (and the competition) before deciding on the DA15. The DA12-24 images just never did it for me. But after reading your comment, I decided I should take a look at it again on the PPG. Still the same conclusion.

And while the DA10-17 images are not truly sharp if you're pixel-peeping, it creates nice photos. I think the color rendering is better than the DA12-24.



But while the some of the specific choices above may be largely a matter of personal preference, I don't know how you can call the weakest class of lenses "all pretty good." Unless you mean it as in "the NBA Atlantic Division is pretty good!?"


There are some great wide angle lenses. The Nikon 14-24 and Sony Zeiss 16-35 are two of them. The DA15 might be great. And the Sigma 8-16 and Tokina 11-16 (not available in K-mount, unfortunately) come close. Even the DA10-17 and Samyangs have their place. But the others fall short, especially the 10-20/22/24 lenses from Sigma, Canon, and Tamron. And you keep finding even more mediocre lenses as you keep looking.
Forum: Post Your Photos! 02-24-2014, 08:52 PM  
Nature Red Tulip
Posted By 45 Mike
Replies: 9
Views: 656
This is one of the first photos I took with my *istDL in 2009, just getting used to digital SLR!
Forum: Post Your Photos! 02-24-2014, 03:47 PM  
Nature Sea Lion
Posted By monoloco
Replies: 6
Views: 671


I took this at Los Islotes in the Sea of Cortez
Forum: Post Your Photos! 02-24-2014, 08:37 AM  
Landscape A boat into the sunset
Posted By ChristianRock
Replies: 6
Views: 769
During our trip to Charleston, SC last year...





Forum: Post Your Photos! 02-24-2014, 04:25 PM  
Machinery Rustic beauties....
Posted By manishved
Replies: 2
Views: 725
From an old quarry .... your "Likes" will be appreciated :)








Forum: Pentax K-3 & K-3 II 02-19-2014, 11:23 PM  
why I won't buy a k3 (Warning: Satire Thread)
Posted By dansamy
Replies: 102,938
Views: 4,796,438
My husband had several health problems last January, including a bout with renal failure (dialysis, etc.) and a mild stroke. I've always been good about appreciating the blessings that I have, but that drove it even deeper. Cherishing the people that you love and the experiences of your life are far, far more important than the stuff.
Forum: Pentax K-3 & K-3 II 02-19-2014, 04:03 PM  
why I won't buy a k3 (Warning: Satire Thread)
Posted By Parallax
Replies: 102,938
Views: 4,796,438
Say two Hail Megapixels and buy a roll of gaffer's tape and all will be forgiven.
Forum: Pentax K-3 & K-3 II 02-17-2014, 08:23 PM  
why I won't buy a k3 (Warning: Satire Thread)
Posted By dansamy
Replies: 102,938
Views: 4,796,438
We homeschool. I'm uploading now some pictures from biology today. Earthworm dissection.
Forum: Pentax DSLR Discussion 02-12-2014, 11:59 AM  
Olympic Equipment
Posted By peterjcb
Replies: 12
Views: 1,199
that Nikon 400mm is bigger than my leaf blower :)
Forum: Pentax News and Rumors 02-11-2014, 07:08 PM  
PentaxForums.com February Daily Giveaway: Win a 35mm, 40mm, or 50mm lens!
Posted By colourful64
Replies: 410
Views: 38,696
So I have been a creeper for years, picking up tidbits along the way.. a month long contest means i must speak up
Forum: Post Your Photos! 02-10-2014, 10:58 PM  
Macro My attempt
Posted By ausmoose
Replies: 23
Views: 1,509
I think my aperture was too short. This was one of my first macros and I thought that a low aperture would be good.. here's a slightly better one.
Forum: Photo Critique 02-10-2014, 10:14 PM  
Abstract Snowey Horsey
Posted By SpecialK
Replies: 12
Views: 888
I believe you have a very sensitive wife, and a bad horse photo :-)
Forum: Post Your Photos! 02-10-2014, 09:46 PM  
Nature Young Eagle
Posted By johnyates
Replies: 15
Views: 1,181
Crazy eyes indeed--looks like Michele Bachmann.
Forum: Pentax K-3 & K-3 II 02-10-2014, 07:41 PM  
why I won't buy a k3 (Warning: Satire Thread)
Posted By stevebrot
Replies: 102,938
Views: 4,796,438
I suspect that the K-3 seals might be interested in the herring as well, them being seals and all. In which case they would surely fail and that is good reason to deny Hocir and not buy a K-3.


Steve
Forum: Pentax K-3 & K-3 II 02-10-2014, 07:24 PM  
why I won't buy a k3 (Warning: Satire Thread)
Posted By Pioneer
Replies: 102,938
Views: 4,796,438
Please test your assumptions before spreading these vicious, pickled rumors!!
Forum: Pentax K-3 & K-3 II 02-10-2014, 01:52 PM  
why I won't buy a k3 (Warning: Satire Thread)
Posted By monochrome
Replies: 102,938
Views: 4,796,438
According to the Castle Doctrine, people should beware of a single grumpy old person whose fruit is being pilfered from the very tree branch under which it hangs. There's a reason it isn't an H&K3. :cool:
Search took 0.00 seconds | Showing results 1 to 25 of 49

 
Forum Jump


All times are GMT -7. The time now is 06:53 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