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life_in_sepia
17-Oct-2012, 15:48
82195

It is just under 12" bottom to top (including hood). The rear element is about 4-1/4" across (the visibile part). I do not see any model designation on it, but thought someone here might have an educated guess. The lens on the right is a Ross Cabinet #3, which I believe is a 12-inch FL. Thanks! Ed

pierre506
17-Oct-2012, 16:17
What a big lens!
You should buy it then and identify it later, Ed. :)

CCHarrison
17-Oct-2012, 16:31
The serial number would help a bit, but is likely a # 6 or # 7 Petzval based on the lens measurement given. #6 would cover 10x12 and # 7 11X14.

Dan

life_in_sepia
17-Oct-2012, 16:44
Thanks Dan. Serial number is 21073. For sure the back lens is at least 4.25". I think the 7B is a 14-FL with 4" diameter lens, no? Is the 7 you are refering to different that the 7B? This thing looks bigger than a 14-FL lens to me.

I did buy it, btw :)

CCHarrison
17-Oct-2012, 16:48
The 6, 7 and 7A all have lens glass measuring 4.25" / 4.1875" according to an 1876 catalogue (which is very close to the date of your lens)

The 6 has a back focus of 11 inches, the 7 has a back focus of 14 inches and the 7A a back focus of 16 inches.

Its not an 8 because the lens glass measures 5.25"/5.437"

Dan

life_in_sepia
17-Oct-2012, 17:32
Thanks Dan. Appears to have a back focus of 14 inches. So apparently a FL of 18 and 3/8th inches, right? Do you happen to know the aperture wide open?

Two23
17-Oct-2012, 17:40
Serial number suggests it's from somewhere around 1875, plus or minus. That's very solid Petzval territory.


Kent in SD

pierre506
17-Oct-2012, 18:12
Thanks Dan. Serial number is 21073. For sure the back lens is at least 4.25". I think the 7B is a 14-FL with 4" diameter lens, no? Is the 7 you are refering to different that the 7B? This thing looks bigger than a 14-FL lens to me.

I did buy it, btw :)

Congratulations, Ed.
It's must be Petzval,not Euryscope according the profile and size.
The Ross Cabinet 3# lens' FL is 12in.
So I felt that your Voigtlander's FL must be over 14in according to your picture.
Are you sure that your lens' FL is about 14in?

goamules
17-Oct-2012, 18:18
Nice find Ed.

Amedeus
17-Oct-2012, 19:57
+1


Nice find Ed.

life_in_sepia
17-Oct-2012, 21:03
Thanks guys! So it appears to be 18 FL, with about (perhaps slightly over?) F4 aperture. There is one waterhouse stop, apparently about mid-range, f8?. But it has no flange. Any suggestions to procure a flange?

jumanji
17-Oct-2012, 21:56
I have a same one, with flange but without any stop. Maybe a trade :D? I make a flange and send you, you make a set of whs and send me :).

CCHarrison
18-Oct-2012, 02:56
Ed,

It appears you have the # 7 which is listed with an "Equivalent Focus" of 453mm or 17.75" with coverage to 11x14" Aperture is approx f/4.3

Good luck
Dan

pierre506
18-Oct-2012, 04:30
Dear Ed,could you measure the size of it without the hood?

Bruce Schultz
18-Oct-2012, 04:48
Send it to me for a thorough analysis.

life_in_sepia
18-Oct-2012, 08:42
Thanks Dan! Just one point of clarification: I think you posted this old advertisement, which I believe lists the FL at 18 and 3/8ths, no? Not a big difference of course -- just curious.

http://antiquecameras.net/blog92.html

Pierre, I just took off the hood. Without, it measures 9 inches top to bottom.

Bruce ... you have such great suggestions!

CCHarrison
18-Oct-2012, 10:33
Ed,

You are looking at an 1864 ad from my site. I checked an 1876 catalogue to quote you the specs given which is the same date as your lens (see http://piercevaubel.com/cam/catalogs/1876mccollinlp819.htm ). Voigtlander made slight changes over time which is why its important to use ads that match the date of your lens.



Thanks Dan! Just one point of clarification: I think you posted this old advertisement, which I believe lists the FL at 18 and 3/8ths, no? Not a big difference of course -- just curious.

http://antiquecameras.net/blog92.html

Pierre, I just took off the hood. Without, it measures 9 inches top to bottom.

Bruce ... you have such great suggestions!

life_in_sepia
18-Oct-2012, 10:47
I'm glad I asked! Thanks, Dan!