Time to be with your loved ones

Time to be with loved ones

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1
vote
1answer
53 views

How do I make sample photos for cameras/lenses? [duplicate]

If I want to compare different cameras or lenses, what properties should the photos that I use have? And what should I do in order to get the most information? I can think of the following, but ...
0
votes
3answers
280 views

How can I test whether my camera is working after it was dropped?

Issue : How can I evaluate my cameras performance synthetically? Scenario : Bought a Nikon D3100 an year back. Photos looked good enough. The camera fell, zoom lens effected. But works. Cleaned lens ...
2
votes
2answers
422 views

Are there objective tests showing the the impact of a lens hood on image quality where there is no obvious flare?

I am familiar with the function of a lens hood, and I can understand that they could help to improve the contrast of pictures. However, I'm not convinced whether a lens hood does make all that much of ...
7
votes
3answers
202 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, ...
7
votes
2answers
606 views

How to determine optimal color correction filters for a sensor?

Originally, this question was titled: How to detemine native color temperature of a sensor? For questions about warming filters and color filters in general, leading answers indicate that for optimal ...
18
votes
4answers
2k views

How to test actual focal length?

From Matt Grum's comment to my previous question, I learned that manufacturers may casually "round" actual focal length of a lens to some nice number that gets printed on the box and stored into EXIF. ...
13
votes
3answers
322 views

How to test what aperture is actually used?

It seems odd to me that Canon EF 100-400mm f/4.5-5.6L does away with a front element of only about 63 mm, as reported by @jrista - which would be enough for only f/6.3 at 400mm, missing the spec by ...
9
votes
3answers
302 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 ...
25
votes
3answers
2k views

How can I test a new lens to make sure it is operating correctly?

How can I test a new lens to make sure it is operating correctly? I found two similar questions with answers specific to things such as sharpness and focus, but I want to cover any and all possible ...
7
votes
2answers
802 views

How to test noise?

I'm just looking for what's the best technique to test for noise on a camera. Like what settings are best? What type of photo is best? What lenses should I test with? Like those sorts of things. ...
14
votes
3answers
4k views

What is the Nyquist Limit and what is its significance to photographers?

The Nyquist Limit is frequently mentioned in the context of lens and sensor resolution. What is it and what is its significance to photographers? Here is an example of it being used by DPReview.com ...
8
votes
2answers
2k views

How can I/should I check the sharpness of my camera lens?

The sharpness of a lens is a major concern for most photographers. This might be because we are worried about a defect in the lens, a problem with our technique or a problem with the camera. Or we ...
13
votes
1answer
797 views

Where can I find good test image(s) to send to a print lab?

I am looking for a good test image to send to a print lab, to test my system's color calibration. I'll be sending my own photos too, of course, but I would also like to include one or two test images ...
46
votes
4answers
12k views

What is the best way to micro-adjust a lens?

I have a Canon 7D with a 50mm f/1.4 lens, and I think the auto-focus of the lens is off. How can I test and adjust this reliably? Will this approach work with all of my lenses? If I had a different ...