I myself am looking for a tube adapter and filters and so far my
research has led me to conclude that if you're only planning to use
filters, then the size of the tube adapter is totally up to you
regarding how much of the viewfinder is visible (the larger the
adapter the less you see in the viewfinder...plus flash is
affected) since you can find filters that fit most if not all of
the 3 tube sizes.
If you're planning to use other lenses and so on, then the better
route to go is the 58mm.
--M~3
I just purchased a new black G2 and would like suggestions on the
size lens adaptor to purchase. I have seen 49mm, 52 mm, and 58 mm.
Want to add a UV filter ASAP and possibly wide angle and telephoto
lenses. Any suggestions on size and brand would be greatly
appreciated.