I'm not crazy about the idea of IS, in body or lens based. Sure, it
would be useful for some situations, but it has its limitations from my
point of view. What I would *much* rather be able to do is push shutter
speed up by having better performance at high ISO. The advantages of
this over an equivalent X-stop gain due to moving lens elements or
sensor are clear to me.
Subject movement is one of the obvious reasons here - some things will
be blurred at slow shutter speeds regardless of how steady the camera
is. High shutter speed can reduce this.
I don't think there are any IS/VR macro lenses, and I'd be surprised if
high-mag macro worked very well with AS. My reasoning here is that
moving the camera forward/back can't be compensated for by moving the
sensor in X&Y (correct me if I'm wrong, but I don't think the KM sensor
moves forward/back to compensate for focus changes?) Also, to my
knowledge the IS/VR systems don't compensate for this. In macro, it's
hard to explain, but it seems to me that due to the proximity of the
subject, camera movement (up/down, left/right rather than just the
direction it's pointing) actually significantly changes the actual
projected image, not just where the image falls. Some macro subjects are
also very fast moving, so subject movement is something to think about too.
Needless to say, a higher shutter speed doesn't have any complications
for macro work.
So if I had to choose between IS/VR/AS or better sensitivity, I know
what I'd pick any day. If I could have both though, it would be nice (-:
/me drools over clicking away happily at a noiseless 6400 ASA
equivalent, with an antishake sensor and IS/VR lens all at once.
Cheers,
David
- Re: In-Body Image Stabilization David Nelson
-
