What add-on lenses are available for the Powershot, or am I stuck with the two or three offered by Canon?
Canon’s two add-on lenses (also used on their top digital video cameras) appear to be very good the G1 can also accept Canon’s 1.5 telephoto. All of them use a 58mm thread, which means that any add-on lens that you could add to the Canon GL-1 video camera should also fit the Powershots (G1 and G2 owners will need to use the appropriate Canon 58mm adapter). For the G3, Canon has created a new bayonet-based mounting system. They apparently plan a broader range of accesory lenses, but the situation is still uncertain. It looks like G3 owners may be stuck with only the Canon “official” lenses. An alternative for G1 and G2 owners is to use Susan Doel’s LensMate adapter, which provides 49mm threads instead of 58mm threads (Hopefully a G3 version will appear…). Stepper rings are also available to connect accesories of different sizes say, to connect a lens with 55mm threads to the 49mm lensmate. Most stepper rings run less than $10 (I wouldn’t recommend this as an alternative to Canon’s ada
