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Questions tagged [testing]

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2answers
60 views

What should I do when the results from Reikan FoCal show flaws?

I've done an AFMA calibration Reikan Software. Assuming this was properly executed, do I need to take the results seriously? All my lenses do suffer from astigmatism, and also my new Canon 24-70 f2.8 ...
14
votes
6answers
3k views

What is the Leica look?

What is the Leica look that fans of the company claim is unique to them? What concrete differences are there that are most obvious to a layman?
2
votes
2answers
215 views

How to test image quality with a camera that is focused to infinity?

I have to test a camera that is focused to infinity, but I cannot take an image of an object that is more then 1.5 meters away from the camera because I can't get it out of the room itself. (The room ...
0
votes
1answer
347 views

What should I test on a new camera (other than a sensor check)?

In the past, when I have gotten a new camera, I have just done a black test, or what some call a "cap test". You equip a lens, put on the lens cap, then take a series of exposures at the full range of ...
0
votes
2answers
407 views

How should I arrange a scene to test the relative sharpness of lenses with different focal lengths?

I want to compare sharpness of two lenses, consider 50mm f/1.8G vs 35mm f/1.8G from Nikon on a crop sensor camera by taking some photos (from some small size text on a paper) and review the results. ...
20
votes
7answers
933 views

What should I look out for when buying a second-hand DSLR body?

I'm considering buying a DSLR from a friend. I've read the used lens question elsewhere on this site, but I was wondering what I should look at on the body to assess the condition?
3
votes
1answer
170 views

Are “weather sealed” gear tested or rated for their sealing? [duplicate]

Context So I've been looking around at camera bodies and gear and noticed the more expensive ones have "weather sealing". From posts like these, I understand how it is implemented. However unlike ...
6
votes
2answers
532 views

What to look for when testing a wide angle lens before buying?

I'm looking at buying a used wide angle lens (specifically Canon EF-S 10-22mm f/3.5-4.5 ) for a crop camera. The question What should one look for when buying a used lens? covers the basics when ...
3
votes
3answers
3k views

What would be a good indoor setup to find a lens's sharpest aperture?

I read the whole of How do you find out the "sweet spot" of a lens? — great question and answer, but it didn't discuss a potential homemade rig for finding the sharpness aperture of my ...
2
votes
2answers
344 views

Test the Stability of a Tripod?

How can one test the stability (sturdiness) of a Tripod? It would also be handy if it can be done in-shop
9
votes
3answers
388 views

What are good test shots for finding out the capabilities of a camera?

I have a range of cameras from a (frankly awful) kiddie camera to a hybrid (Olympus Pen) and I want to take some pictures to test their (comparative) limitations. So I want to take the same photos ...
3
votes
1answer
653 views

How to test the autofocus system before asking for support?

For outdoor usage I got an Olympus TG-2 compact camera. Various tests claimed autofocus: 'quick and mostly accurate' - at least I could not find any that described problems. Now, I know that I cannot ...
0
votes
1answer
2k views

How can I compare MTF50 to a manufacturer's MTF chart?

Currently working with a trial-copy of QuickMTF (Imatest's software kept crashing on me), and I'm trying to get some basic MTF readings for my Canon 85 f/1.8 lens on a 6D. My first set of test shots ...
0
votes
1answer
576 views

How to smoke test basic functionality of a D90 during buying

I think, many beginners want to buy his/her first digital camera. Can them follow some check list to understand that the product is working and working well, has not physical damages, dust and so on. ...
9
votes
3answers
390 views

What are the standard tests available to quantify lens parameters?

In some of the questions I have asked here, some of the terms frequently used to describe the difference in image quality between the cheaper lenses and the premium ones have been increased contrast, ...