adapters and converters

I bought this accesory thinking that it was compatible with the Canon powershot G3 (because it is in the list of accesories for this camera) but it doesnt work with the G3. Buyers beware. If you have a G3 you should buy a LA-DC58B instead.

I have this adapter just in the need that I want to use the special effect filters.. it serves this purpose very well, however, I've also noticed some drawbacks that annoy me quite often.

a) it blocks the build-in flash if you don't zoom in.
b) it blocks the low-light focus-assistant beam!! and for my G2, although it is a Canon Type-A camera, the red-light focus-assitant beam of the external flash Speedlite 420EX won't work. That said, you are taking risks on using autofocus, and if you are using those converters, say bye bye to autofocus.
c) my silver G2 looks bad with this BLACK adaptor...

This lens adapter has some advantages: 1- Wide opening (58mm) so reduce vignetting 2- Same filter size for Canon SLR like ELAN 7E, thus same filter set can be used for both Digital and film. 3- You can always keep it on the camera with an UV adapter, protecting your lens, don't forget the cap. Disadvantages: 1- Blocks viewfinder, you have to use LCD, which I always do because viewfinder never shows %100 coverage of real shot. 2- Blocks a slight portion of low light sensor, but I did some tests, it does not have much blockage and low light sensor works OK in my camera with this converter attached. 3- Blocks microphone, I did not test the effect of converter on microphone. Some notes: If you buy this converter, don't buy a non-coated filter because camera has an excellent coated lens, and you don't want to reduce your image quality with a [price] lens. Go for a [price] B+W or at least double coated hoya filter.