Bizarre lens collection coincidence...

P. J. Alling webstertwentysix at
Mon Oct 5 23:48:07 EDT 2009

frank theriault wrote:
> On Mon, Oct 5, 2009 at 6:38 PM, P. J. Alling <webstertwentysix at> 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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