Does the Cannon G2 have a panoramic function? I am thinking we
don't really need the wide lens if the camera has a panoramic
function. ....
A "panoramic function" in a camera is pretty much bogus
except in
locking white balance and exposure based on the first shot. Manual
setting will do as well - esp if you have a histogram display to
fine tune the metering.
Even with stitching, if you are going to be working indoors a wide
angle lens will be valuable. Very valuable! Life will be much
easier with fewer shots to stitch together. It is also very
difficult to stitch using a hot-shoe flash without having to do
extensive work to deal with exposure issues. Exposure issues will
become more difficult indoors if you (or someone else) moves from
being in front of a white fridge to the front of a dark cabinet -
changing the amount of reflected light. Changes in voltage levels
will change the amount of light.
Certianly not impossible to stitch indoor shots, but it is more
difficult than landscape photos. In part because of light level
issues, but even more important, because you will want the result
to come out square. Very few people will notice that a tree isn't
straight, but many more will notice if your cabinets are tilted.
That will be an issue even with single wide-angle shots, but the
complexity goes up with more stitching.
Far from impossible to do the job by stitching, but far easier if
it can be done in one wide-angle shot.