1999.07.16 20:04 "Re: RGB Gradient Code, adapted from Andreas Neumann", by Phillip Crews
I believe Photoshop is adjusting sample levels for color correction. Try turning off all color conrrection and conversion during import.
If you wish, I'll be glad to generate a histogram using my program (ThumbsPlus), with a guarantee that no pixels are adjusted, and email it to you; just send me your gradient image.
Cerious Software Inc.