Canon says IS
single mode does not work for panning. People above say it does, and have results to prove it. What's going on?
There are a few possibilities:
1 - IS
doesn't work with panning, and the fact that panned shots with IS
turned on exist is simply a credit to the photographer's skills - ie. the same results would have been achieved without IS
2 - Canon don't know what they're talking about
3 - A misunderstanding or misrepresentation of how IS
works. I believe IS
is achieved through the use of accelerometers - ie, the system detects changes in motion, not motion itself. If this is true, then the moment you begin to pan, the acceleration will be such that it causes the IS
to stop working. However, once up to "panning speed", the motion becomes constant and any variations (shake) will fall back into the IS
parameters, and hence a constant motion can indeed be stabilized. In short, provided you don't try and shoot at the start of your panning swing, you may be OK
The difference between this and a mode 2 lens, is that in the later case either horizontal or vertical accelerations can be ignored altogether making the lens tolerant of variations in the panning speed - and avoiding a "danger zone" at the start of a pan.
I don't have a single mode lens to test this with, but perhaps someone else would like to experiment. I think it is highly unlikely that Canon are incorrect in their description of IS
, but I do think it is possible for photographers to intentionally or accidentally develop techniques which allow equipment to be used outside the design parameters.
Colin K. Work, Pixstel