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I would like to know details about this lens and how it compares to an equivalent lens(s) for 4x5 field work.

Would like info. on a Bogen 210mm f:6.3 lens.Design,quality and equivalent name brand lens.

Describe a Voightlander Brilliant lens in Compur shutter.

Plaubel Anticomar 4.2/300mm.What is the reputation of this lens?

I HAVE A CHANCE TO BID ON A TELE-hEXAR ;FOCAL LENGTH 40CM.iIwould like to know i f this would be too long for my RB Graflex series D where the distance from the film plane to the centre of a lens at...

I saw a Color Skopar on e-bay .the photo shows/105 but thats all for focal length;no mm or cm.The ad says itis for 4x5.I believe the Skopar is a Tessar formula,hence I doubt it covers 4x5.I asked...

I have a 7" Ross Homocentric barrel lens f 1:5.6.Can you tell me anything about it?

What type of lens is a CZ series 1c 1:4.5 f25cm.Serial No.555343? It must be pre war and is uncoated.

I have two English lenses I would like comment on; 1)Dallmeyer anastigmatic wide angle foc.ln.41/4 inches f 6.5 mounted in a Compur shutter so lens is in front of shutter.care must be taken to keep...

Kodak anastigmat lens 135mm focused by rotating front element.How would the perf ormance compare to one that is focused by moving whole lens?IF I set the lens at infinity and then focused by moving...

lenses that have fungus or other non clarity.How does one clean?