tiff 48-bit prophoto

[alain]

Hi

Somethimes when I save a 48-bit tiff in icc prophoto my dam software recognised it as no colorspace (and uses sRGB).
Keeping pwp open at that time and resaving it after the check gives ok results.

Any clue whats going on?

BTW. It's annoying because I somthing to remind everytime.

[alain]

Some extra info :

The original files are made by Bibble 5.1. It could be a different way of handling "save as" versus "save".

[alain]

I've done some more checking the icc-profile information isn't readable by a nr off software packages, including pwp.
I had "prophoto" as assumed profile inside pwp.

[Winfried]

I tried to check your findings with my software:
- dam software: IMatch, which software do you use?
- Bibble 5.1
- PWP 5.0.1.8

It seemes that IMatch has a problem to recognize the ICC-Profile under every circumstance.
On the other hand PWP reorganises the meta-data before saving a file.

Winfried

[alain]

I'm using IDImager as DAM software.

But even PWP itself is sometimes unable to read the icc-profile it wrote themselves back. I have the impression pwp (latest 5.x) somtimes either "forgets" writing a profile or writes an "invalid" one.
(Opening those file's inside pwp gives no profile.)

It seems that save as is more errorprone than save.

If I need to do something to help, just let me know. (The tiff's with zip compression are almost 80MB)

[alain]

No suggestions.

I find this a rather annoying problem. I have to check the icc profile after each save.