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Re: Sony A7/A7R: almost the perfect cameras if...

 
 
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      10-19-2013
In article <(E-Mail Removed)>, Alfred
Molon <(E-Mail Removed)> wrote:

> > The movement range of in-body
> > stabilisation will be less than the image movement range which can be
> > achieved by long focal length lenses.

>
> Without knowing how the IS is implemented in the E-M1, you can't make such a
> statement.


it's basic physics.

the longer the lens, the more movement the sensor must have to
stabilize the image and the less effective it gets.

there is a point at which it will be at it's physical limit of motion
and can't stabilize anything longer, and long lenses is where
stabilization is needed the most.

with the stabilizer in the lens itself, it can be at the proper point
in the optical path where very little movement is needed. in other
words, it will always be more effective.
 
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