I assume you mean A95, as there was no A90.

The only other major difference is the A95 has an LCD that will tilt and twist. A nice feature for certain situations.

http://www.dpreview.com/reviews/compare_post.asp?method=sidebyside&cameras=canon_a85%2Ccanon_a95&show=all

Most of the camera makers will produce a series of cameras based on one frame. They are just covering several price brackets.

In February, Nikon introduced 5 new cameras (4600, 5600, 5900, 7600, 7900) They are pretty much the same camera (all are 3X optical zoom), with enough differences to cover certain price ranges.

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