J. C. O'Connell said: > > I saw a Pentax 500mm screw mount lens on eBay, I can buy it for $100, but > > it's not a Takumar. On the other hand, it's not a mirror lens, and it > > has an adjustable aperture. How is the non-Takumar 500mm? > > All of the PENTAX brand 500mm screw lenses were Takumars. > It probably was a third party lens. The good 500mm Pentax > screw lens is the 500mm F4.5
But weren't there different lines of Takumars, some with multi-coated optics and some without? Is there any way to tell? Because I'm not just trying to get a 500mm lens, I have a 500mm reflex. I'm trying to find something in the neighborhood of profesional quality optics at prices I can actually pay, and that's what the SMC screw mount Takumars are, if I can believe the legends. (Can I believe the legends?) But I wouldn't limit myself to Takumar if there are comparable alternatives (Carl Zeiss?).
