I bought on ebay, a copy of the Japanese periodical "Voigtlander BESSA WORLD". I have the 2001.11.1 issue, which covers the 101 Heliar, the Bessa T, and the R and L cameras. It's very comprehensive 8) and an absolutely cool reference guide to my cameras. Also excellent photo portfolios, a comprehensive side-by-side CV lens test, and lots of great photos of every possible configuration of the gear and accessory ever made ;D Sure wish I could read Japanese, but I do love the photos

<br /><br />BTW on page 104 is a Voigtlander orginal accessory (I would guess) which slips around the lens mount, and tightens around the focusing helical, and gives you a very-nice raised tactile knurled ring. Looks alot like the
www.leicagoodies.com "STEER" focusing helical ring. Looks like an original Voigtlander acessory, to fit the 21/4, 25/4, 28/3.5 . Anybody know anything about these lens-helical rings? Why did they never put them into production, I wonder? <br />