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Forum: Photographic Industry and Professionals 06-20-2012, 02:29 AM  
Ethics of photomanipulation
Posted By DBZFYAM
Replies: 16
Views: 2,795
Totally agree with the comments above. As long as it isn't used for something like a documentary etc it should only have some minor corrections such as color correction (white balance) and don't try to pass off art as real. I've seen some comments on articles however from people who think otherwise. For example: a photographer altered the scene in a, I believe, warzone (changed the position of a body and added props) to send a message that this isn't the way to resolve things. Most of the people in the comments thought this was unethical and didn't depict the truth but there were some who said that it should be done in this case to send a wake-up-call. So I'm trying to get some insight as well to see what percentage of the people think things like that aren't ethical and what percentage think it is ethical. But the example I just mentioned is quite a extreme case though ;)

@Venturi: yes indeed. The survey software I'm using sadly can't do that kind of questions but for most questions I've added comment boxes to try give people a way to explain their choices a bit. But I'll have another look to see if I can improve some of the questions.

About the last part: It's true manipulations have been around since the beginning of photography (if I recall correctly the first one was of Abraham Lincoln in 1860), but most people (non-photographers) believed photos couldn't be altered since they weren't created by hand like paintings were (so paintings were more of an interpretation than the real thing. this is still somewhat the case in photography of course since modifications are made to the photo to make it look like how the photographer experienced the scene. think about exposure, color corrections etc. but not as much as paintings). Even the person behind Sherlock Holmes believed a photo with fairies was real (http://www.astropix.com/IMAGES/J_DIGIT/ETHICS/FAIRIES.JPG). That's why I described it like that in the survey.
Forum: Photographic Industry and Professionals 06-19-2012, 01:27 PM  
Ethics of photomanipulation
Posted By DBZFYAM
Replies: 16
Views: 2,795
Hey everyone,

Hope I'm posting this in the right forum. I am currently doing some research about photomanipulations (from the photographers perspective and from the employers) and if/when it is ethical to do so for a project for school. I think I might get some valuable feedback here from my fellow Pentaxians. I would really appreciate it if some of you could fill out my survey to help me with my research and maybe point me in a direction I haven't looked at yet or give me some feedback (in the replies below).

The link to the survey: SURVEY: Ethics of photomanipulations

Thanks you all very much in advance. It's much appreciated!

Greetings,
Stefan
Forum: Pentax SLR Lens Discussion 11-29-2010, 03:26 PM  
Is the APO version of the Sigma 70-200mm F/2.8 EX DG OS HSM worth the higher price?
Posted By DBZFYAM
Replies: 24
Views: 13,395
I did some more research and it seems they don't have a non-APO version indeed. I came across the links below and can't really figure out why the price is a lot higher on (I think) the first version (first link).
The II version is cheaper (second link), but doesn't have OS (don't know if this is usefull at all for Pentax users), no rounded aperture blades and is 1:3,5 compared to 1:8.
Don't think these things will justify the price though, or I'm missing something.

The links (in Dutch though):
Sigma 70-200mm Pe F/2.8 APO EX DG OS HSM FLD (stabilizer) - Pentax (AF), met 3jaar garantie, Nederlands - alle bekende merken voordelig kopen bij Kamera-Express.nl
Sigma 70-200mm F/2.8 II EX DG APO macro HSM - Pentax (AF), met 3jaar garantie, Nederlands - alle bekende merken voordelig kopen bij Kamera-Express.nl

m8o, would love to hear your findings if you can try it out! And hope your dog's doing okay. How's the K-5 by the way?
photogerald, the Tamron-review i read was tested on a K20d. don't know if it's faster on the K-7 which I use
Forum: Pentax SLR Lens Discussion 11-28-2010, 07:49 AM  
Is the APO version of the Sigma 70-200mm F/2.8 EX DG OS HSM worth the higher price?
Posted By DBZFYAM
Replies: 24
Views: 13,395
Hey everyone. I've been looking for a F2.8 70-200mm (or something similar for sports photography) and found these Sigma lenses:

Sigma 70-200mm F/2.8 EX DG OS HSM
Sigma 70-200mm Pe F/2.8 APO EX DG OS HSM FLD

I also found a Tamron equivalent, but according to some reviews, the focusing was significantly slower than the Sigma.

Would the APO version be worth the high price (almost twice as expensive)? Or are there better lenses available than these?

Thanks!
Stefan
Forum: Pentax DSLR Discussion 12-31-2009, 10:44 AM  
K-7 frame per second only 4 instead of 5.2?
Posted By DBZFYAM
Replies: 3
Views: 1,542
Thanks for the quick replies! It was indeed caused by the lens correction settings. Didn't know those have such an impact on performance. Thanks again!
Forum: Pentax DSLR Discussion 12-31-2009, 10:21 AM  
K-7 frame per second only 4 instead of 5.2?
Posted By DBZFYAM
Replies: 3
Views: 1,542
I've received my K-7 a few days ago and tried to shoot a 5 frame HDR, but the camera stops after 4 shots and then shoots 1 frame per second. Does anyone know why I can't get 5 frames per second?

It does shoot 5 fps when set on JPG, but is only capable of 4 fps when set on DNG.

Settings/equipment:
Write DNG only (also tried PEF)
SanDisk Extreme III 30MB/s 4GB and 16GB card
Manual focus
f2.8
No liveview

Thanks in advance,
Stefan
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