1) Tripod. Already had one, but in exploring all the manual
features of the G3, I'm using it way more than I did with my last
camera.
2) Camera bag big enough to tote everything that came with the
camera. And any other extras you intend to buy.
3) USB card reader. I wanted an easy way to take pictures to the
lab for printing, but there's no way to write files to the CF card
through the camera. My only other option was to burn them to CD,
but that's time and resource consuming. A reader can be bought for
as little as $14. Maybe less if you get a rebate.
4) External flash. Preferable a Speedlite 420EX or 550EX. If you
take any indoor pictures, this is by far the single biggest way you
can improve your picture quality. I love my 420EX.
Lots of people say you should have an extra battery, but in 3 years
of digital camera usage, I've only had my battery die while
shooting once. And that was because I forgot to charge it up that
morning. I suppose this really depends on how many pictures you
tend to take in a day, and in what sort of situations. Also, maybe
people who have been in digital photography longer are used to
older cameras that gobbled batteries like candy. The G3 is, in
comparison, a very miserly power user.
i'm going to be a new owner of the G3 sometime this week. (i
ordered it today online, i should receive it by Wednesday). well i
wanted to know what are some things that i should get. (regardless
of what i'm going to use it for) if you can't list all of them,
please direct me to a site which does. also does anybody have a
hardcover case for the camera?