On Mon, Oct 5, 2009 at 6:38 PM, P. J. Alling <[email protected]> wrote: > Yes, this post makes me officially bored. I'm sitting at my desk looking > at a collection of 5 lenses that I just happened to have sitting there, two > zooms and three primes, and regardless of focal length they are for all > intents and purposes the same physical length, well within 1/2 a centimeter > anyway, from mount to filter thread, regardless of maximum focal length, and > as two of them are mirror telephotos there is quite a range in focal length. > > The Vivitar S1 35-85mm f2.8 is about 3mm longer than the smc Pentax 135mm > f2.5 which is just about 5mm shorter than the smc Pentax F 70-210mm > f4.0~5.6, which is exactly the same length as the Kalimar 500mm f8.0 mirror > tele, which is about 4mm longer than the Vivitar 600mm S1 Solid Cat. It's > not on the desk but the smc Pentax FA 28-200mm f3.8~5.6 falls right in that > physical length category as well, just a about 3mm shorter than the > 70-210. Now that I think of it, the smc Pentax [K] 135mm f3.5 is the same > length as the f2.5 135. It's kind of weird. A good 50% of my long glass > is the same physical length when stored.
I bet the Vivitar S1 35-85 is the heaviest of the bunch. I'm surprised by its mass every time I pick mine up and put it on a body... cheers, frank -- "Sharpness is a bourgeois concept." -Henri Cartier-Bresson -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
