[DominikHoffmann]

In order to reversibly compress 50-MB TIFF images generated by a scientific instrument I am looking for a file format that doesn't indroduce any data loss. Thus, JPEG is out. However, I would think that with the specific nature of image files there should be a better compression algorithm than whatever Aladdin uses in their StuffIt products. Any ideas?

Dominik Hoffmann

[EnVoy]

What image app are you using?

Tried LZW compressed .tiff? It's lossless.

There are a lot of little things you can do to save file size. Don't save as .eps, the file size is much larger. Photoshop native file format has it's own lossless compression, and tends to be a smaller file (as long as it is flat). Turn off full size previews when saving files.

As far as major compression goes, Stuffit is the most common, and lossless. There are those Fractal Algorithm programs. The claim to be able to make an image resolution independant, but I don't buy it.

[godzookie2k]

keep the tiff, use stuffit to segment, only so far you'll compress a tiff, read: not much.

[Sharky K.]

png is much better than tiff.
http://www.fnordware.com/
(this plugin from the url is much better than the one shipping with PSD)
supports alpha channels, lossless, etc...

[killer_735]

I second that emotion on the PNG.

Especially if you're trying to get something out of a wierd proggie, like #$&^ Macromedia Freehand, and the PDF output is screwy.