frank theriault wrote:
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
Actually the Solid Cat out weighs it by quite a bit. It's pretty much a
solid hunk of glass four and 1/2 inches in diameter, with a brass case,
the same length from mount to filter thread as the 35-85mm
--
The free man owns himself. He can damage himself with either eating or
drinking; he can ruin himself with gambling. If he does he is certainly a damn
fool, and he might possibly be a damned soul; but if he may not, he is not a
free man any more than a dog.
--G. K. Chesterton
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