I have two lenses that I can’t find the answers to some question that I have about them.
The first is a 165mm f6.8 angulon in a compur shutter. The serial number dates it to 67/68. My question is, the shutter looks like the cable release was added later and now limits the aperture to f32. From what I can find on the net, the shorter versions of these lenses stopped down to at least f45 for max coverage. So should this lens stop down to f45 as well? I have not bought this lens, I have it on trial. Haven’t used it yet though, so I don’t know if the small aperture limit will vignette on 8x10.
The second lens is a Bausch & Lomb triple convertible 11.5/18/27 in a Volute shutter. I got it yesterday for a good price. There a no scratches, cleaning marks, haze or separation. The shutter is slow, but works on all speeds. My question is, dos any one know what design of lens this is? Where I bought it was listed as an anastigmat. This is a pretty generic term for a lens. Is this a copy of the first Protar design? I can see two bright reflections and one dim reflection, which I believe is the first Protar design, two groups of two elements cemented together. I have and use some zeiss protars and find them sharp and contrasty enough for B+W.
Michael
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