View Full Version : Photoshop being silly...

11 November 2005, 05:41 PM
....or it might be me, probably the latter.

Anyway, I have a depth map rendered out of Lightwave. PS sees it an indexed colour so I convert it to greyscale then save it again. When I reopen the file it has switched back to being indexed. I am very confused as I swear I have done this conversion before. Has this happened to anyone else? If so are there ways around this?

Thank you for any help.

11 November 2005, 06:13 PM
what file format are you saving it as?

11 November 2005, 06:57 PM
I am trying to save it as a BMP file.

11 November 2005, 12:34 PM
thats why...BMP's can be indexed depending on bit depth...guess you've got yours set to 8?

11 November 2005, 01:02 PM
I believe mine are set to 16-bit, if I convert to eight wont they look all posterised and lame? I need a good quality because I am using it as a depth map. :sad:

11 November 2005, 02:27 PM
does it have to be a bmp. I peronally would save as greyscale tif. Also will the comp be in photoshop? If so it doesn't matter if you save it as a indexed as you can still pull a mask for the depth by ctrl clicking one of the channels. Hope this maybe of some help.


11 November 2005, 09:59 PM
depends if your talking 8 bit per channel or 8 bit for all the channels...8 bit per channel is what PS uses by default (255x255x255=16.7 mil)...8 bit for all the channels is 256 colours, 16 is 32000, so 16 could still be indexed colour mode.

Chech the bit depth :)

12 December 2005, 09:23 PM
This is actually a common issue. Some types of BMP files can't be properly opened in PS. This can easily be worked around. Open in another application and save it as JPEG or TIF. Or don't resave just copy and paste from one app to another.

CGTalk Moderation
12 December 2005, 09:23 PM
This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.