Better than attaching a cylindrical adapter
I had a Lensmate adapter on my last camera, a Canon s90, which has no other option for attaching a filter, other than holding one in front of the lens with your other hand.  My current camera, a G16, dispenses with the innovative and useful large adjustment ring around the lens (its function is taken over by a small toothed wheel above and to the side), replacing it with a removable cover and mounting system.  Canon and several third-party vendors sell a cylindrical adapter that allows you to attach a filter to the camera.<br /><br />This appealed to me as it didn't require making any changes to the camera, but once I tried this method, the drawbacks were immediately obvious.  The G16 is not a tiny camera; it measures around 105 x 75 x 40 mm and barely fits in a shirt pocket.  This comes out to a volume of a little over 300 cubic centimeters.  The cylindrical adapter is 62 mm wide and must be at least 50 mm deep so the lens will not hit it when the camera is on (the one I have has two parts; you can remove the front section and make it a little shorter as long as you only shoot at wide-angle where the lens does not stick out as far).  This cylinder is around 150 cubic centimeters - so it makes the camera 50% larger, and in the most inconvenient way possible, changing the form factor from a block to what amounts to a &#34;bridge&#34; or &#34;super-zoom&#34; profile.  What was barely pocketable is now impossible - just to gain the ability to attach filters.<br /><br />I now have the Lensmate bayonet mount on the G16, which adds barely anything to the size, and allows filters to be attached much more easily than having to thread them on.  It also uses smaller 52 mm filters.  Until Canon decides to add conventional threads to this camera line, Lensmate offers the only workable system for attaching filters.
Rating: 5 stars