Help: camera has tunnel vision

[cheez1981]

Can someone identify what my problem would be for this picture? It looks as though I'm looking through a tunnel but they are random (ie. the pictures before and after do not display this problem). I recently bought a Circular Polarizing filter for my Pentax ZX L SLR film camera using a standard 28-80 autofocus lens. The camera was set for autofocus. The only thing I can think of is that I get this effect from rotating the filter to adjust the picture. Oh, I do have it at the end of two other filters...a 1A and a UV filter.

Thanks...