BirdForum is the net's largest birding community dedicated to wild birds and birding, and is absolutely FREE!

Register for an account to take part in lively discussions in the forum, post your pictures in the gallery and more.

Reply to thread

Message: <blockquote data-quote="Surveyor" data-source="post: 1381092" data-attributes="member: 50720">Henry; Last night I tried two different computers with different vintage CRT monitors with the following settings: 11000K Gamma 1.86500K Gamma 1.89300K Gamma 1.89300K Gamma 2.25000K Gamma 2.2 All ‘color picked’ essentially the same RGB values from both your downloaded file and a screen capture. To me, at this point, it looks as if the ‘picker’ values are either coming directly from the file, or at the latest, from the graphics processor mapping. It appears to me that all the monitor color temp and gamma settings do is correct the color displayed. The only difference was between machines, and that was only 1 or 2 counts in a value. Some browsing indicates that the “defacto” windows standard is 6500K, Gamma 2.2.  If the sun was high, say around noon (about 6000K) and your target was a standard bleached white paper or cardboard, it probably has a white point industry standard D65 or 6500K. To my thinking, it is probable that the target itself was around 6500K. If you have the time and opportunity, it may be useful to take some pictures of the reference paper by itself in the early morning, or different lighting conditions, and if possible with the white balance both off and on. The more I look at this, the more possibilities I see. Right now I have 3 other optics projects going, so it may be awhile before I can get to this and I do not have Photoshop either. Maybe others will pick it up in the near term. It is a great idea and needs to be pursued though. Best,Ron </blockquote>

Verification