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melcat wrote:
Yes, this is a real problem for me. I don't have a deep knowledge of insects (I usually just photograph them as one of several subjects on an outback trip) and when you're working quickly and the insect is perhaps part of a larger image it isn't at all obvious what the true colours should be.
There are many thousands of insect species in Australia and most likely I'm trying to identify it after the fact, weeks later, at home, and the book doesn't have detailed photos for all of them. Even if it does, how do I know the photographer didn't use a camera without an antialiasing filter? After all, some of my flower identificatiob books have bad colours in the photos, due to old photos taken with Velvia or new ones in sRGB.
The last thing I need for this kind of work is a camera that *might* be introducing moiré effects.
(As far as I know, I've never seen it from my 1Ds Mk III, but I *have* seen it on my Sony RX1, which allegedly has an antialiasing filter.)
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I haven't ever seen a case where moire or aliasing would put you on the wrong foot for species identification, but who knows ;-) There can be color problems with subjects in nature because of all kinds of reasons, and sometimes they are impossible to solve because e.g. iridescent colors cannot really be captured and replicated with normal display devices. Often such colors can change with temperature, angle of light and other factors. With some dragonflies I am still not able to produce image with colors that I consider close to real life ... using extended color space can help but it cannot fix the bigger issues.
Images from the analog era and from early digital cameras sometimes had color problems due to IR or UV light contamination, which is hardly an issue nowadays because of strong UV-IR blocking filters in most cameras. Also, if you don't know what light was used for your reference picture, or if you are using unnatural lighting for your own pictures, it can be difficult to judge.
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