2010 April 18th, 10:14
Formerly known as spaxion
Constant Aperture 2 touch lens
Will such a lens also maintain focus while zooming? I am looking at Cannon 35-105mm f/3.5 for a good all around lens on a letus outside. The one touch lenses are fine, but I can't help but to wonder about the other side of the fence.
Are there any faster constant aperture two touch FD's?
2010 April 18th, 15:38
Yes this lens retains focus while zooming, is quite sharp, and quite bright outside.
2010 April 19th, 05:40
Emperor of Rep
The fastest constant aperture FD zoom lens is f/3.5. Only in the next iteration of Canon lenses (EOS lenses) did f/2.8 lenses start appearing.