Maximum Extension Tube Length

[Shel Belinkoff]

Is there any theoretical or practical limit to the length of
extension tubes?  Could a 150mm - 200mm length be used with a
200mm macro lens without any image degradtion?
-- 
Shel Belinkoff
mailto:[EMAIL PROTECTED]
-
This message is from the Pentax-Discuss Mail List.  To unsubscribe,
visit http://www.pdml.net and follow the directions.