$100 is not a bad price to check out this focal length. In the M42 mount, slower 400s (f/6.3) are a dime a dozen and often preset or manual aperture. Faster M42 400s are scarce; the models I know of are
- Sport Zoomar 400/4 and Zoomar Killfit Sport 400/4.5 (I think these are two different lenses; it may be one lens that I've confused under two names) - Tamron SP 400/4 (I included this for laughs; no one will pay $1400 to use it with an M42 Adaptall mount!) Pentacon 400/4 (probably made in M42; definitely in medium-format mount) Enna Muenchen Tele-Ennalyt 400/4.5 (manual aperture, 4 m close focus, about 2200 g) Fujinon-T EBC 400/4.5 (8 m close focus, 1930 g, 5 elements in 4 groups) Piesker Tele-Pikon (preset; 430mm long) Revuenon 400/4.5 (same as the later Enna Tele-Ennalyt, where chrome metal was replaced by black finish or black rubber grip) At just 250 mm (9.9 inches) and a reasonable 4 m close focus, the Enna and Revuenon seem the best choice for most shooters looking for a fast, affordable 400 in M42. An Enna just sold on German Ebay for only 111 Euros! A more typical price is two to four times that amount. I have photos of all these lenses, if anyone's interested. [EMAIL PROTECTED]
