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Search took 0.02 seconds. Search: Posts made by: c.d.ewen

Forum: Large Format Photography Equipment

February 12th 07, 02:32 PM

Replies: 13

Beck Lenses, Biplanat

Views: 2,624

Posted By c.d.ewen

One last note: the book states that the name...

One last note: the book states that the name Biplanat was used to indicate that the lens was an Aplanat, but one stop faster than the regular f/8 Aplanats.

Charley

Forum: Large Format Photography Equipment

February 12th 07, 05:23 AM

Replies: 13

Beck Lenses, Biplanat

Views: 2,624

Posted By c.d.ewen

My apologies, Neil. Here's the correct...

My apologies, Neil. Here's the correct entry:

No. 3
Focus: 6
Focus of Back Combination: 10 1/2
Plate Covered: 5 x 4
Plate Covered f/22: 6 1/2 x 4 1/4
Price: 2 17 6

Forum: Large Format Photography Equipment

February 6th 07, 02:48 AM

Replies: 13

Beck Lenses, Biplanat

Views: 2,624

Posted By c.d.ewen

From, "Photographic Lenses, A Simple...

From, "Photographic Lenses, A Simple Treatise", 6th Edition (No Date), by Conrad Beck and Herbert Andrews, Page 278:

Beck-Biplanat Series I, f/5.8

Mounted in Brass and Magnalium

No. 2

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