NConvert & Color Spaces

Discussions on NConvert - the command line tool for image conversion and manipulation

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justinjtownsend

NConvert & Color Spaces

Post by justinjtownsend » Wed Jun 14, 2006 2:37 pm

I am converting tiff files (with the sRGB colorspace) to thumbnail size. To verify the color space of the thumbnail I'm looking in Photoshop. Photoshop says no color space is associated.

I am using the -keepcspace parameter. I have got it to work with *.jpeg files. What's the reason it doesn't work with the tiff format?

Thanks alot.

Justin

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xnview
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Re: NConvert & Color Spaces

Post by xnview » Wed Jun 14, 2006 3:43 pm

justinjtownsend wrote:I am converting tiff files (with the sRGB colorspace) to thumbnail size. To verify the color space of the thumbnail I'm looking in Photoshop. Photoshop says no color space is associated.

I am using the -keepcspace parameter. I have got it to work with *.jpeg files. What's the reason it doesn't work with the tiff format?
Currently only jpeg can be saved in CMYK
Pierre.

tmaes
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Joined: Thu Sep 01, 2005 8:13 am

another question about this...

Post by tmaes » Thu Aug 16, 2007 12:44 pm

I tried to convert an image from rgb to cmyk using -ctype option,
I tried on a tiff and, after I saw your last remark, on a jpeg, in the second case it created 2 copies of the jpeg, but in the properties box of these new images(in xnview), the color range is still RGB is it normal of am I wrong somewhere?


Code: Select all

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\tmaes>"c:\Program Files\XnView\nconvert.exe" -ctype cm
yk "c:\Documents and Settings\tmaes\Desktop\99.tif"
** NCONVERT v4.81 (c) 1991-2007 Pierre-E Gougelet (Aug 13 2007/14:38:42) **
        Version for Windows NT/9x/2000/Xp/Vista  (All rights reserved)
** This is a freeware software (for non commercial use)

Conversion of c:\Documents and Settings\tmaes\Desktop\99.tif into c:\Documents a
nd Settings\tmaes\Desktop\99.tif OK

C:\Documents and Settings\tmaes>"c:\Program Files\XnView\nconvert.exe" -ctype cm
yk "c:\Documents and Settings\tmaes\Desktop\99.jpg"
** NCONVERT v4.81 (c) 1991-2007 Pierre-E Gougelet (Aug 13 2007/14:38:42) **
        Version for Windows NT/9x/2000/Xp/Vista  (All rights reserved)
** This is a freeware software (for non commercial use)

Conversion of c:\Documents and Settings\tmaes\Desktop\99.jpg into c:\Documents a
nd Settings\tmaes\Desktop\99.jpg OK

C:\Documents and Settings\tmaes>

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xnview
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Re: another question about this...

Post by xnview » Wed Aug 22, 2007 9:24 am

tmaes wrote:I tried to convert an image from rgb to cmyk using -ctype option,
I tried on a tiff and, after I saw your last remark, on a jpeg, in the second case it created 2 copies of the jpeg, but in the properties box of these new images(in xnview), the color range is still RGB is it normal of am I wrong somewhere?
ctype is only used for RAW format
Pierre.

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