Frantisek wrote: FV> I don't think so. For some strange reason, ext. tubes didn't work well FV> with my zooms. Throwing the focus totally off during zooming.
Hi Frantisek, As I understand, parfocal zooms are designed for a specific magnification range. As soon as you get out of it, they loose more or less this quality. Still, there's an unexpected advantage in using zooms on tubes. They are more versatile than primes on tubes (macro lenses are excepted) when tripod mounted. By combining zoom and focus actions one usually gets more focus range and has to do less tripod adjustments. Servus, Alin
