k-h.a.w wrote:
Thanks Rich. A terrific image.
Do you ever use the APO-Extender-R 2x with the 280/4?
K-H.
Hi K-H,
Thank you. I am not sure when I last used the 2X Apo Extender with my Leica R 280 f4 Apo Telyt lens. I normally have my Canon new FD 500mm f4.5L lens when I am out to take wildlife images . I know that the 2X Apo does not perform as well as the !.4X Apo Extender. If I were pressed and only had the 2X Apo Extender with my 280mm f4 Apo Telyt I would use it. Doug Herr (telyt) has made comments in the past regarding the 2X Apo Extender with the 280mm f4 Apo Telyt and as I recall he has noted a loss of some contrast as well as a bit loss in sharpness. Doug also normally uses his Canon new FD 500mm f4.5L lens in the 500mm focal length range when he has it with him.
Rich