On Tue, 16 Dec 2003, Andy Chang wrote: > 1. By using the teleconverter, will I loose one F stop or does it > remains the same?
You lose one stop with a 1.4x teleconverter, and 2 stops with a 2x teleconverter. > 2. If I use the A series teleconverters on an AF body, do I still have > the AF ability or do I go MF? You'll lose AF, so you'll have to go MF. For some unknown reason, Pentax doesn't make an AF TC, although companies such as Tamron make AF TC's in Pentax mount. Go figure. > 3. Among the TCs, is there any specific one that you guys favour? The Pentax brand ones are exceptional, but I've seen very good results from Tamron's 7E TC's. Stay away from 4-element designs, as a general rule, but some 7-element ones aren't bad for the money. chris
