OK, now back to the thesis>>>>>the IS not needed for wildlifeshooters for<300mm.
Please take a look at this shot also from today.....300mm @1/80 sec. Now, had I turned the IS on, perhaps the leaves would have been a wee bit sharper. However, what would IS do for the squirrel (i.e., the wildlife) ?
That's right, absolutely NOTHING ! The treeshark would have been as blurred as ever.
Therefore, even if IS would let wildlife shooters go to very low shutter speeds, the subjects of their photography do not. Similarly, the best/sturdiest tripod can not stop a wingbeat of a duck.
However, as most macropractitioners know all too well, tripods do something very important for them that IS does not: stop the axial component of lens movement.
Awlright, I feel better already now that I've got that off my little mind.
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