Luminous Landscape Forum

Equipment & Techniques => Digital Cameras & Shooting Techniques => Topic started by: dlashier on October 03, 2004, 04:39:47 am

Title: Colour Matrix
Post by: dlashier on October 03, 2004, 04:39:47 am

[font color=\'#000000\']If you're shooting raw (and this seems to be what you're talking about), color matrix setting is irrelevant.

- DL[/font]

Title: Colour Matrix
Post by: 61Dynamic on October 04, 2004, 12:56:52 pm

[font color=\'#000000\']WHen shooting RAW, those adjustments have no effect on the RAW files despite what you set them to. As I said in your other post, WB is the only thing that effects RAW although technically it doesn't.

When you set WB in camera while shooting RAW it records info about the WB you set but makes no actual changs to the color values recorded by the camera. When you load the file into the RAW converter it'll preveiw the image with the WB you set but you can easily change it as it's not yet set in stone.[/font]

Title: Colour Matrix
Post by: Jonathan Wienke on October 07, 2004, 01:24:22 am

Quote

[font color=\'#000000\']I remember Michael and Thomas Knoll in an interview noting that they only ever use AWB when shooting raw shooting as you invariably set the WB later in post but what about the colour matrix?  Is there any reason not to set the widest colour gamut ie AdobeRGB ?

Pazza[/font]

[font color=\'#000000\']There's a good reason to always use Adobe RGB even when shooting RAW: the color matrix setting affects the generation of the camera histogram. See http://visual-vacations.com/Photogr....ies.htm (http://visual-vacations.com/Photography/exposure_metering_strategies.htm) for a more detailed explanation.[/font]

Title: Colour Matrix
Post by: Pazza on October 02, 2004, 11:22:16 pm

[font color=\'#000000\']I remember Michael and Thomas Knoll in an interview noting that they only ever use AWB when shooting raw shooting as you invariably set the WB later in post but what about the colour matrix?  Is there any reason not to set the widest colour gamut ie AdobeRGB ?

Pazza[/font]

Title: Colour Matrix
Post by: Pazza on October 04, 2004, 07:59:15 am

[font color=\'#000000\']Ok, thanks.  Don in your experience, is it best to basically turn everything off/leave at zero the controls when shooting raw and do all your adjustments in post? Eg sharpening, contrast, colour, etc...

Pazza[/font]

Title: Colour Matrix
Post by: Dave Millier on October 05, 2004, 06:58:32 pm

[font color=\'#000000\']Regarding RAW and in camera settings, not all raw formats are quite as raw as others...

My Kodak 14n requires an in camera "Lens optimisation" setting. No one seems quite sure what this does but it appears to correct colour shifting. If you set it wrong (or if it doesn't work properly for a particular lens) you get the horrible 'Italian Flag' effect (three vertifical striped colour casts of different colour reminiscent of a desaturated Italian flag overlaying the image).

From discussions on RG's forum with Kodak spokesperson Bob Brown, it appears that it is not possible to change, adjust or correct the setting in the raw converter later because the in camera setting + firmware does something to the raw file data itself rather than just embedding the settings in the file metadata.[/font]