Subject | Re: Is RGB to Lab lossy? - was(Re: Lenses and sharpening) |
From | nospam |
Date | 10/07/2014 23:26 (10/07/2014 17:26) |
Message-ID | <071020141726256307%nospam@nospam.invalid> |
Client | |
Newsgroups | rec.photo.digital |
Follows | Eric Stevens |
Followups | Eric Stevens (1h & 45m) |
once again, i never said it was significant. i said it's lossy and it is.Alan BrowneEric Stevens
But if one went to Lab space and back along the way, then it will always be lossy even if nothing was done in Lab space.
True, but as I found in my experiments (as described again, below) the loss on conversion is close to zero. The argument is not whether or not there is any loss in going through Lab space but whether or not the loss is significant. nospam seems to equate even the smallest loss arising from Lab conversion as significant
but he forgets that the fact that he has loaded the image into an editor is going to wreak considerably more damage to the original image.not necessarily.
That's why I think he is talking nondense when he advocates not using Lab so as to avoid damage.there is absolutely no reason whatsoever to use lab because just about everything you can do in lab can be done without a lab conversion *and* avoid the losses.