Digital Light & Color

So what's the easiest way to find out what would a gamma (or similar piece-wise transfer curve) is used in a printer profile? The reason for the question is this: I have a hard time to print shaddows properly on Durst Lambda. Even if the test prints are seen in really bright light, they seem to have...

Here is what I think, but I'm not sure. In a standard monitor/working colour profile (e.g. sRGB) there are xTRC tags that define display gamma for this profile. They don't have LUTs. Printing profile don't have xTRC tags, but typically have several LUTs for different rendering intents. The LUTs look...

Just to supprot this point: the new Monochrome channel mixer has 'clipping' warning that pretty much works this way - no need to to go 'over board...' or do some other fancies. Flipping W<-->B pixels works ok, but it's sometimes hard to see: would it be useful to have them more pronounced/coloured -...

If I get it anywhere close to right, in 3-tone Transformation the Contrast and Brightness sliders apply 3 separate curves for each tone mask and then blend results (more or less). Now, if for instance my low and high tone ranges are prettey narrow (e.g. 0-20% and 80-100%), the contrast and brightnes...

Though I'm not sure what 'vibrancy' actually does, it seems that in PS RAW it desn't do much more than PWP's Satruration with 'preserve low' or 'preserve low an high'. I don't think there is a special thershold for skin tones in any implementation I've seen - unless masks are used. I thinks is a gim...

I thought more about blending incongruent images than real panorama stitching. Just the idea of the blend being 'smooth' or 'agreeable' more than straight pixel blending - i.e. blending the low frequency over longer distances than high frequency components.

Not expecting PWP to become a panorama software, I found that soemething akin multi-resolution splines as edge-blending technique would have been useful when two images had to be blended. The Composite now makes it easier to blend low pass/high pass parts of an image. Did anyone tried that in blendi...

Thanks Jonathan, Though the monitor curves doesn't affect the image data before printing, there is another way of using them when sending a file to the printer: using Inverse Monitor Curves in Color Curves Transformation/Options (for which I'm grateful). And this is what I do: use Monitor Curves to ...

Just a thought on showing clipped pixels. I find mapping pixels clipped in HSV/HSL extremely helpful in almost any transformation, especially as I adjust the settings. Though it can already be done in RAW, Levels&colour, using colour ranges in masks, or in high contast - but it's not that overly...

I've been having a long string of printing mishaps lately - some coused by the printer, some by me, and some by general evil. I thought I could wing it knowing a few things about colour profiles, but I couldn't. So I turned to the Monitor Curves, that seem to work much better than I expected (and se...