Quote Originally Posted by Drew Wiley View Post
A convertible lens set would in fact probably be bulkier and heavier than a trio of very lightwt lenses. Then you've got other issues - potentially fiddling around with lens cells in damp or dusty conditions, having all your eggs in one basket with respect to shutter performance etc. And I doubt the actual optical performace would
be equal to what one can expect with something like a dedicated Nikkor M or Fuji A etc.
I'm puzzled why you should state that as a probable fact...

The lens I suggested weighs 300g including shutter and is 47mm long. This gives focal lengths of 150mm and 265mm.

RR