[Alt-photo] Separating channels

Gordon Holtslander gjh at shaw.ca
Wed Oct 22 17:39:11 UTC 2014

Yes, currently (version 2.8) gimp only supports 8 bit color. 

Work is in progress to support up t o 6 4bit per color channel available in 2.10 

No word on when version 2.10 will be available. IE it will be ready when its ready ... 

It will be really interesting if/when GIMP supports 64 bit space, and Photoshop only supports 16 ... 

A few years ago a "fork" of gimp was made to support higher bit depths. It was used in the film industry and called CinePaint. 
Currently it only works on Linux and usually must be compiled from source 


Gordon J. Holtslander 
gjh at shaw.ca 
Learn about HSP http://sp-foundation.org 

----- Original Message -----

From: "tdp" <tdptdp at gmail.com> 
To: alt-photo-process-list at lists.altphotolist.org 
Sent: Wednesday, October 22, 2014 9:39:22 AM 
Subject: Re: [Alt-photo] Separating channels 

Please be aware that if you use GIMP you will be limited to 8-bit RGB color 
separations. If you require CMYK support, or 16-bit support, Photoshop is 
still your only option. 

I love GIMP, but it is ... gimped? And has been for way, way too long. If 
8-bit RGB works, GIMP is a far better option than Photoshop. 

On Wed, Oct 22, 2014 at 4:29 AM, Henry Rattle <henry.rattle at ntlworld.com> 

> Hi everyone, 
> The only thing I use my elderly Photoshop CS for is to separate channels 
> for 
> tricolour gum (and soon, I hope, casein!). It's not worth hundreds of 
> pounds 
> for me to update to a new version of PS to run on my iMac just for that one 
> task. But to use CS, I have to maintain a separate bootable Snow Leopard 
> disc, which seems a lot of trouble for one job. 
> Can anyone point me to a mac-friendly application that will separate 
> channels, preferably cheap or free? 
> Many thanks 
> Henry 
> _______________________________________________ 
> Alt-photo-process-list | altphotolist.org 
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