Ah, yes. I forgot about that. But is it only zooms or any lens that
works via internal focusing?
Chuck Norcutt
C.H.Ling wrote:
> Focus length is defined at infinity, most zooms are much shorter than the
> marked focal length at close distance.
>
> C.H.Ling
>
> ----- Original Message -----
> From: "Ken Norton" <ken@xxxxxxxxxxx>
>
>
>>> If all of the tests were set up the same, why are some images and
>>> highlights
>>> different sizes?
>>>
>> Those are 100% crops in Studio 2. The positioning is a little different
>> because of something else we discovered about these lenses--they aren't
>> all
>> exactly lined up the same. Hmmm. (although some of this difference may
>> possibly be caused by changing position of the sensor even though IS was
>> turned off, but after the camera resets with lens changes, who knows...)
>> Same with the apparent focal-length of #1 not quite looking like 50mm even
>> though the exif says 50mm.
>>
>
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