I happen to have a roll of 120 drying now that I shot today with a Kershaw Otar 80mm triplet. Iangreenhalgh1 wrote: I will add that the Corygon could be a good lens, triplets can be very good, I have shot Agfa Apotar, Schneider Radionar and Trinar, Zeiss Novar, Voigtlander Voigtar, Ensign Entar, Ludwig Meritar triplets with good results, they need to be closed 2 stops at least to reach best sharpness I find. Rodenstock UV-Rodagon f5.6/60mm + 105mm + 150mm Pentax Ultra-Achromatic Takumar f5.6/300mm

Pentax Ultra-Achromatic Takumar f4.5/85mm Kds315* wrote: Well, the expressedly mentioned copyright notice of the Lens Vademecum doesn't seem to stop copying here documenting quite a lack of respect and honoring somebody else's work. Last edited by iangreenhalgh1 on Fri 8:22 pm edited 1 time in total I don't care who designed it, who made it or what country it comes from - I just enjoy using it! Other trade names are Biochron f2.0, and Coronav f4.5 which latter was probably a dialyt, in 50-360mm.

A 135mm was noted at auction on aįig 009 020 Friedrich Coronar f4.5/135mm No352,216 in barrel.Ĭoronar f6.8 This was a triplet and a less expensive lens.Īkmar f6.8 75-300mm 70-90°, Dagor type, (Q9) separable. It seems to have become a major product, below. This was a recent introduction in 1926 according to Frerk, and was a Q15 type design and suitable for manyĬameras, and well regarded.

with Coronar lenses for 6x9cmĪpprox in f6.3, f4.8, f4.5 and there was a program of Coronar f4.5 lenses as separate items. Mueller, Strengenberg, Germany were listed in B.J.A. They have been noted for Coronar lenses on cameras, and probably on enlargers. I saw a German 6x9 folder of unknown maker on ebay a couple of days ago that had a 100 or 105mm Corygon lens in a rimset Compur-Rapid.Ĭ.Friedrich, Werkstette fur Prazisions Optik, C. Iangreenhalgh1 wrote: Corygon is a triplet, they are also seen on some folding cameras, so looks like it was a general purpose lens sold for both taking and enlarging.

Friedrich serial number