My own personal opinion is to use teleconverters on prime lenses only. They compromise the performance of the lens and, in the case of a zoom, the lens is already compromised.
Bob Rapp ----- Original Message ----- From: "James Adams" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, October 01, 2002 1:44 PM Subject: AF teleconvertor for Pentax SMC-F + Takumar-F > What AF Tele-converter would > you recommend for use with the > Pentax SMC Pentax-F 1:3.5-4.5 > 28-80mm and Takumar-F 1:4-5.6 > 70-200mm Auto Focus lenses. > > I currently have a Vivitar MC > 2X [PK-A/R-PK] Tele Converter > and an Izumanon X 2X Auto Tele > Converter [PK]. Neither of > which work with AF lenses. > James > >
