2006.12.05 15:52 "[Tiff] Grayscale, or is it?", by Joris Van Damme

2006.12.05 17:45 "Re: [Tiff] Grayscale, or is it?", by Bob Friesenhahn

In other words, if you need to display the TIFF greyscale on an sRGB monitor, then you're not applying any gamma correction to it, which is consistent LibTiff RGBA interface implementation, and very likely consistent with 95% of common practice out there?

Right. If you open a grayscale image and it looks fine on a computer display without additional gamma correction, then it must be similar to "sRGB" (which is in itself an attempt to describe what is "normal").

Do you agree that this most common practice violates the quoted remark from the spec?

It seems to, but the specification authors should not be faulted for not correctly predicting the future. :-)

(I'm not being religious about the spec here, I'm merely trying to sort things out and arrive at a consensus in the mailing list and mailing list archive.)

It seems that an assumption of "sRGB" (or "Rec.709") for an image which does not otherwise specify its properties is most likely to produce the expected results.

Scientific/sensing/rendering users live in a completely different world from the rest of humanity.

Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/