h a l f b a k e r yExpensive, difficult, slightly dangerous, not particularly effective... I'm on a roll.
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Probably baked but I can't find one anywhere. I'm looking for a standardized image that I can photograph at specific distances and light values to compare the performance of different cameras. Since I collect antique cameras, this issue comes up often. I use my own unique chart for this purpose, but
I'm looking for something more universal. (I use a section- not the whole thing- of a $1 note to check closeups, and a series of "liberated" street signs and advertising posters for distant images, each mounted on 8'x10' sheets of plywood.) For fixed-focus lenses or for checking the "infinity" settings, I photograph the horizon from my front porch.
Resolution Targets
http://www.tasi.ac....ing/targets.html#t2
See ISO chart [Shz, Oct 04 2004, last modified Oct 21 2004]
Scanner Target
http://desktoppub.a...eekly/aa071402a.htm
Corel used to include this years ago. [Cedar Park, Oct 04 2004, last modified Oct 21 2004]
Davebox
http://www.imaging-...IPS/TESTS/TESTS.HTM
Scroll down. WAAAAAAYYYYY down! [Cedar Park, Oct 04 2004, last modified Oct 21 2004]
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I appreciate the response about targets. I think what I'm getting at is developing a standardized test for checking photographic equipment; when a manufacturer advertises his product, he chooses the kinds of images that the equipment he's selling perform well with. A standardized test using identical targets, exposure settings, and lighting values would possibly provide the consumer with a more informative technical comparison. |
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I use a colour scanning target I got with CorelDraw 7.0 some years ago. It has a wide variety of colour ranges, along with a women's face. Unfortunately, it's only 5"x7", so you really can't use it unless you get in close or zoom in. [link] |
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Dave Etchells from Imaging Resource has set his own 'Davebox' test target, with a number of different targets including colour charts, a resolution chart, metallic objects, fabrics and plastics. It folds out and is set up with a professional lighting system, and he uses it to compare different cameras. You could make something like this. [link] |
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Yeah, I can't freaking believe that something like this doesn't exist. Though, I wouldn't doubt that camera manufacturers themselves have proprietary internal test images like this. It would only make sense, as they need to know their own camera's performance, don't they? |
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However, you're absolutely right, there should be a standardized one that can be used to inform consumers. It should of course not be intended to replace those chosen images in advertising, because certainly a manufacturer has the right to display images that show off the camera's strengths, but simply be an additional source of information for the consumer to consider. |
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