Ronar in Compound Shutter: Is it coated?

[G Benaim]

Hi all,

I've been offered an apo ronar 19 inch lens in a compound shutter, was wondering if coating was in use at the time they used compound shutters or not. The serial number is 567xxxx. Thanks


GB

[Peter K]

At least all lenses from the beginning of the fifties are coated. And Compound shutters where buildt up to the end of the sixties.

[G Benaim]

Thanks Peter, according to the sn, the lens at least is from 1961. I mean to use it for 8x10 contacts, anyone care to comment on coverage and price vs. a similar artar? Thanks.

[Peter K]

The Apo-Ronar 480mm has an image-circle of 396mm at infinity and f/22 and an angle of view of 46°. So there is some movement possible with 8x10 and it's 312mm.

[john collins]

My understanding is that the Ronar lenses installed in shutters at the factory are multicoated. I had a 300mm that was really sharp, wish I still had it.

[Peter K]

My understanding is that the Ronar lenses installed in shutters at the factory are multicoated.

But not in the early sixties. Multicoating isn't an issue with a lens with only a few air-lens surfaces like the Apo-Ronar. This lens is a realy "sharp" one.

[Toyon]

Never mind the lens, the Compound shutter is a work of art.

[Jan Pedersen]

But not in the early sixties. Multicoating isn't an issue with a lens with only a few air-lens surfaces like the Apo-Ronar. This lens is a realy "sharp" one.

I respectfully disagree with your statement Peter, the Ronar has more air to air to air surfaces than any other lens (8) and need coating more so than other lens designs.

[Peter K]

Any other lens? Most Rodenstock LF lenses have also eight glass-air surfaces. But multicoating compared with single-coating is only an issue with much more glass-air surfaces.