Me thinks you`re not using the right stuff. Last weekend I used my 1000/8 SMCT with a full set of Asahi extension tubes, a Vivitar 2X Macro Teleconverter and an LX on a Bogen 3051 with a 501 video head and got a close up of an owls face, you can see every feather around its beak, and focusing was not that difficult, I don`t know, maybe I just got lucky. The photo will be in the upcoming PUG. I wouldn`t forget about it. Steve Larson Redondo Beach, California
P�l Audun Jensen wrote: Pentax made a 2X-L converter dedicated to the longer A* series ED lenses. It works OK with these lenses. Otherwise, no non-dedicated 2X converter gives great results, and many of us, myself inculded, find that 2X converter never give good results. I never got acceptable result with the 2X-S converter. Getting sharp images with 1000mm lens without ED elements is almost impossible to start with. Getting good results with a 2X converter is impossible according to the laws of physics. It will also be impossible to get sharp images due to vibrations. You need at least two heavy duty tripods. At last, it is virtually impossible to focus an F:16 2000mm lens critically. So forget about it! P�l - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
