Oren,


You can easily put a CP on the G9. Canon makes a lens adapter (plastic), but the one I own is from Lensmate - it is 6061 aluminum, bead blasted, and anodized to exactly match the G9 finish - much nicer than the Canon adapter. It bayonet mounts to the G9 body after taking off the decorative ring around the lens.


It acceptes a 58 mm screw on filter or auxillary lenses - I used my 58 mm Kaesiman B + W Circular Polarizer