thanks for your reply. i will look for this filter. i wonder if anyone has specific polarizing filter experience as i think that they will be thicker than the uv filter?
For Polarizing filters on the 7xx/A1/A2:
Normal 49mm polarizing filters will vignette below 50mm.
There are slim polarizing filters, but they usually don't have a front thread.
You can use a 49-62mm step up ring and attach a standard 62mm polarizer to that. (supposedly 49-55 or 58 step up rings will work with one filter, but vignette with 2 filters)
You can use one of the Cokin filter holders and a matching polarizer. None of the Cokin holders vignette.
I seem to recall reading somewhere that Minolta had a 49mm polarizing filter that had 52 or 55mm threads on the front and didn't vignette.