D200 and AF-S VR 105 Micro 2.8 G

Started Mar 25, 2006 | Discussions thread
OP Yves P. Forum Pro • Posts: 18,674
I hate mathematicians ... :-)

What I meant is the Stabilisation doesn't vary whathever the focal distance is. I agree with what you are saying about amplitude and closeness of subject but the VR doesn't vary in effectiveness in relation to the focus lenght.

Unless I am wrong or I totally missed the point.

VR on a i:i, from actual testing is very very good, not worse than on longer f dist.

AirBete wrote:

Vr is VR wether you are at long or close range.

Ok but VR effectiveness is dependent of the amplitude of the motion
blur. The problem is that motion blur is proportionnal to the focal
length of the lens AND inversely proportional to the distance
camera-subject when the latter is small. Precisely:
motion blur amplitude = k*f(d+f) d
where k is a constant, f is the focal length and d is the distance
between the subject and the nodal point of the lens.

So the question is still unanswered. How does VR perform at 1:1
reproduction ratio?


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