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Voigtländer’s Apo series has gained a high reputation for such examples as the Apo-lantahar 35mm f/2, the 50mm f/2 and the 65mm f/2. Others have caused less applause, such as the Apo-skopar 90mm f/2.8. ...
The Rollei distagon 35mm f/2.8 is part of a series of lenses manufactured under an agreement between Rollei and Zeiss. In the same series you can find the distagon 35mm 1.4 or the planar 50mm f/1.4 and planar 50mm f/1.8. All of them engraved with “HFT” ...