Quote - how would won know is he can handle LAB color images. i never even heard of a LAB image

LAB is a color space, like RGB or CMYK. It's not a file format. It's supported only by EPS, PDF, PSD and TIFF file formats.

It's right there in Photoshop: Image>Mode>Lab Color. Might be under the Edit menu in versions earlier than CS2.

Most other decent image editing apps should support it, at least in more recent versions.

There's a quite terrifying explanation of LAB color here. Don't worry about all the formulae: Photoshop and the Adobe Color Engine (ACE) handle all this stuff for you.

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