Novoflex tele lenses

[Carlos Royo]

As some people around here are much more knowledgeable than me about 
long lenses, I would like to know their thoughts about the performance 
of the follow focus tele lenses made by Novoflex. I have only used a 
Sigma 400 5.6 AF, which I sold to a list member years ago, and the 
excellent F* 300 mm. 4.5
I still keep the F* 300 mm. but it is a short lens for birding and other 
kind of nature photography. If I ever get an *istD or other Pentax DSLR, 
perhaps the crop factor will allow a narrower FOV, but I will surely 
need a longer lens.

Carlos