[rollei_list] Re: Tessars
----- Original Message ----- From: "Peter J Nebergall" <iusar4s@xxxxxxxx> 
To: <rollei_list@xxxxxxxxxxxxx>
Sent: Thursday, May 31, 2007 7:05 PM
Subject: [rollei_list] Tessars
Question for the group: I have2 Automats with 3.5 Tessars. One has the expected Opton-Tessar, coated, but the other, a bit older, Very different, has been re-lensed with a Carl Zeiss Tessar, a much newer lens. My question: the CZ tesar beats the daylights out of the Opton. what was the difference in formula between the coated Jena 3.5, coated Opton 3.5, and the later CZ 3.5? Is this a better lens, or just an 
individual in better condition?

Peter Nebergall
Also, check the poor lens to see if anything is loose. Its possible for the retaining ring to be loose. The center lens is probably spun-in so it can't get loose and move around, the same for the back lens although the cell could be loose. 

---
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx 
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