I have few friends who bought Sigma lenses that were not sharp on their
cameras due to focus precision problems. We have rather good Sigma
service and there the lenses were fine tuned to the cameras giving
outstanding results in terms of AF precision.
Now, I suppose, with the introduction of this new lens, the adjustment
could be made by the user (for free, I would think) and at their
leisure. Although I generally would prefer strict QC and lenses working
accurately out of the box, this solution is second best, so that I
needn't be going to the office for each lens I'd buy that might have
this kind of problems.
On 11/9/2012 12:53 PM, Krisjanis Linkevics wrote:
USB port that according to promo on dpreview.com will allow not
just changing lens firmware but also things such as micro focus
adjustment.
What's the point of focus adjustment on the lens anyway? Unless it is
for fine-tuning the distance scale on the lens itself, I would think
it doesn't do anything. Focus is determined by the camera body, not
the lens. Am I missing something here?
kris
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