Bausch & Lomb Lens Date Code

[Dr Klaus Schmitt]

OK Dan, so I won't.

[Dan Fromm]

Klaus, I'm appalled that you think being unpleasant to me is worth depriving other people of information.

[Shingoshi]

Klaus, I'm appalled that you think being unpleasant to me is worth depriving other people of information.

Was there some reason you needed to antagonize here? Two parties are responsible here, not just one. And I for one would like to have an answer to this question:

Bausch & Lomb 20"/503mm f/5.6 VF1666R.

Xavian-Anderson Macpherson
ShingoshiDao

[CCHarrison]

I believe the answer is provided here:

http://forum.mflenses.com/viewtopic.php?t=20524

[Shingoshi]

I believe the answer is provided here:

http://forum.mflenses.com/viewtopic.php?t=20524

I've posted my reply there.

Thanks!
Xavian-Anderson Macpherson
ShingoshiDao

[Dan Fromm]

Was there some reason you needed to antagonize here? Two parties are responsible here, not just one. And I for one would like to have an answer to this question:

Bausch & Lomb 20"/503mm f/5.6 VF1666R.

Xavian-Anderson Macpherson
ShingoshiDao

Interesting. Klaus slaps everyone to slap me, you slap me too. You should have slapped Klaus.

The tagline you used on the MF lenses forum
"The distribution of knowledge must not be the commodity of tyranny.
Solution: The immediate equalization of all knowledge among all beings."
explains very well why I found Klaus' behavior appalling. I can't understand why you don't use it here too.

Cheers,

Dan

[Shingoshi]

Interesting. Klaus slaps everyone to slap me, you slap me too. You should have slapped Klaus.

The tagline you used on the MF lenses forum
"The distribution of knowledge must not be the commodity of tyranny.
Solution: The immediate equalization of all knowledge among all beings."
explains very well why I found Klaus' behavior appalling. I can't understand why you don't use it here too.

Cheers,

Dan

That's because I just joined and haven't setup my preferences completely. But thanks, I'll do it now! I became a member because of this thread. Now I can only hope that I get the lens in question.

As per above, I believe deescalation is always the preferred course of action.

Xavian-Anderson Macpherson
ShingoshiDao

[Shingoshi]

Sorry to create a new post just for this, but I need to know the thread size on the back of the lens in question here. Is this your standard Copal #3 mount? I now realize that even if I don't get the lens I wanted, there are still others available for sale. They're not as rare as I thought. So it won't hurt so much if I don't get it.

Thanks,
Xavian-Anderson Macpherson

[Dan Fromm]

Hmm. I just checked my USAF data sheets. I'm sure they're incomplete.

Anyway, they list only one 20"/5.6 B&L telephoto, say it covers 24x36, i.e., 35 mm, and weighs 10 pounds. This is wildly inconsistent with a post earlier in this thread that reports a 20"/5.6 B&L tele that covers 8x10.

FWIW, the one reported in the USAF data sheets seems poorly achromatized but is quite sharp over a very narrow field (5 degrees). Back focus is 5".

All of which makes me wonder how many different 20"/5.6 teles B&L made and how well they perform. User reports, anyone?

[Paul Fitzgerald]

That is the lens used on the original 'Big Bertha' Speed-Graphic sports cameras, just do a goggle search.