The lighting condition allow it or not is another issue, that is not
related to optical quality. A tripod is needed in most cases for tele
shoots if you want maximum sharpness. The Vivita 4 element 2x(?) must
be very special, I never happy with the Tamron 4 element 2x I once
owned, just far away from any 6/7 element 2x I have.
C.H.Ling
dreammoose wrote:
>
> You will never see an 88mm image circle because of baffles in the
> converter to limit it's output angle, but that's what is happening
> optically and is the reason for the 2 stop (1/4 the light intensity)
> exposure effect of the extender. I wasn't trying to say they are 'bad',
> only to explain how they work. If we understand our tools and the
> alternatives, we can use them more effectively. I've got some old slides
> I love taken with a zoom and a little 4 element Vivitar extender. Would
> I shoot negative film at 1/30 instead of 1/125 in order to get
> magnification of an image in the camera at the clear risk of blurring it
> when I can enlarge it later - no.
>
> Moose
>
> C.H.Ling wrote:
>
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