Moose:
Thanks for that. I kind of assumed that one could choose either IBIS or
dual IS with the 12-100 and 300/4. From what you are saying the E-M1-2
and the E-M5-2 automatically use dual IS with those lenses. I realize
that extra-long exposures really only work with static subjects.
Nevertheless, the apparent ability to get up to two second exposures
hand held would keep the ISO down in dim settings (e.g., churches etc)
and more than compensate for the F4 max aperture.
I'd like to cover the 50-100mm FL with a WR lens (i.e., beyond the 12-50
that I already have). The cheapest option seems to be the Panny
35-100/2.8, which is quite small. While the 12-50 and 35-100 combined
weigh pretty much the same as the 12-100 alone, the weight on the camera
is quite a bit less. The 12-100, while an ideal FL and with seemingly
excellent IQ, appears to be a 'big' lens and is considerably more
expensive at this time. There's also the 40-150/2.8, but that's even
bigger and as expensive.
Martin
On 2017-02-17 5:11 PM, Moose wrote:
On 2/17/2017 7:29 AM, Martin Walters wrote:
Moose:
As you have the E-M5 mk2 and the 12-100, have you tried the IBIS and
OIS together? If so, what improvement do you see?
It doesn't work as you assume it does. With the 12-100 mounted, the IS
on/off entry on the body menu is grayed out. The mechanical switch on
the lens simply turns the coordinated IS on and off.
There is no way to do some sort of test of OIS vs. IBIS vs. combined.
(Thank goodness!) Well, I suppose one could shoot with a prime, IBIS
on and off, then with the 12-100 at the same FL - and maybe also on a
Panny body for OIS alone. Given the variableness of testing human hand
holding, and the range of shutter speeds to be tested, that shouldn't
take more than a few days to shoot and evaluate.
The IBIS of the E-M5 mk2 is already amazing, as in the robin image I
just posted a link to. As a practical matter, the vast majority of the
stuff I photograph is natural stuff outdoors. As with the robin, Jim's
recent bird pics, the many insect pics I've posted, etc. most of it
moves, a little or a lot. Even if there's no obvious breeze, the air
is moving. Plants and flowers move. Trees move - I've messed up by not
accounting for that. IS beyond a certain point is no help with these
subjects.
Rocks, mountains, statues, buildings, and so on don't move in the time
frame that matters. But for many/most folks, that's tripod time. For
me, out in the field, it's usually hold still, maybe lean against
something handy, time.
Over the modest FL range of the 12-100 (by my standards), I wouldn't
expect to notice much, if any improvement in ordinary use.
As you might now guess, the OIS was not a factor in my decision to buy
the 12-100. It's there, it's on, and I assume it may help somewhere,
sometime.
Not Too Helpful Moose
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