New long lenses or teleconverter

Started Mar 6, 2013 | Discussions thread
viking79 Forum Pro • Posts: 14,147
Re: New long lenses or teleconverter

TC's work best with large aperture prime lenses, for the reasons Ariston mentioned.  A 2x TC loses 2 stops, so it makes an f/2.8 lens like f/5.6, makes an f/5.6 lens like f/11.  Unusable for autofocus. We don't have any large aperture long lenses, so lets see long lenses first.

The iFn has the digital zoom capability I think now, which should cover any general purpose teleconversion (optical TC's aren't necessarily any better than digital on an inexpensive lens).


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