Re: Adobe LightRoom 2.0 what do the controls _do_ and how?
OK, I've got the software (fair & square, thank you very much :) ),
I got Aaland's book, Lightroom 2 Adventure, and I almost absorbed it.
I love the control I get over my now much sharper RAW images, but I still want to know just what some of these controls do. I've got the 'Tone' controls down. But the 'Presence' ones...
1) What does Clarity do? It sorta makes things glow a bit, and the explanation sounds like it is expanding the difference of pixels along a boundary (boundary defined as a major transition between dark & light, or across colors). What does happen, at the pixel bit level and to the image?
2) Vibrance, and Saturation. Aaland says one of these increases the pastel intensity, and one the primary color density. Very high saturation looks like a poorly tuned TV screen. Which pixels and bits do each of these change, and how does it tell the difference between a pastel and a primary color?
Of course, after I understand the above, I'll start asking how valid it is to use these puppies, but I think I'll try them out when I can...
Jay Warner
Canon Rebel XT, 55 - 200 mm Tamron, 100 - 400 mm Canon.
Mac Cube - OSX 10.4.11, LightRoom 2
Re: Adobe LightRoom 2.0 what do the controls _do_ and how?
Hi Jay,
You need the book Colin recommended to me; Real World Camera RAW for Photoshop CS# by Bruce Fraser and Jeff Schewe. Not sure if there is a LR version, but it'll do you anyway I suspect.
It describes Clarity as an image content based midtone filter that works in a similar manner to USM with a small amount and large radius.
Vibrance is descrbed as affecting less saturated colours more than those nearer full saturation and additionally NOT affecting skin tones.
Saturation you know about I guess. :)
Re: Adobe LightRoom 2.0 what do the controls _do_ and how?
Quote:
Originally Posted by
Dave Humphries
Hi Jay,
You need the book Colin recommended to me; Real World Camera RAW for Photoshop CS# by Bruce Fraser and Jeff Schewe. Not sure if there is a LR version, but it'll do you anyway I suspect.
It describes Clarity as an image content based midtone filter that works in a similar manner to USM with a small amount and large radius.
Quick - what is USM? I'm not up on the jargon yet...
Quote:
Vibrance is described as affecting less saturated colours more than those nearer full saturation and additionally NOT affecting skin tones.
Clearly, we're going to have to work on these terms. I'll find the book somewhere...
Quote:
Saturation you know about I guess. :)
Yes. I'm using iPhoto to manage my originals, and the saturate command in that works the same way. Still looks like a lousy TV image.
Jay Warner
Canon Rebel XT, 55 - 200 mm Tamron, 100 - 400 mm Canon.
Mac Cube - OSX 10.4.11, LightRoom 2