Testing two teleconverters

Hello List I got two good converters (and some not so good ones too) I made a small test of the two good ones: Sigma APO 1.4x with a focus screw driver Pentax-F 1.7 AF converter - it makes my old MF lenses do AF. Using two lenses: Pentax FA* 2.8 80-200mm (IF) ED - for the Sigma converter - @ f56,

Re: Testing two teleconverters

On Thu, Apr 21, 2011 at 10:50:55PM +0200, Jens wrote: > Hello List > I got two good converters (and some not so good ones too) > I made a small test of the two good ones: > > Sigma APO 1.4x with a focus screw driver > Pentax-F 1.7 AF converter - it makes my old MF lenses do AF. > > Using two lens