I would like to add that any autofocus system is going to be more effective at not only brighter light levels or faster fstops but also with higher quality optics. Hence, some slower lenses may work just as well as faster ones at same light level if they are of extra high quality ( i.e. primes vs zooms or mediocre third party vs oem or Pentax lenses ). jco
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bob Sullivan Sent: Sunday, September 02, 2007 12:18 AM To: Pentax-Discuss Mail List Subject: Re: eBay Madness, Sometime you get lucky! Perry, I've used it to good advantage with the 200/4 lens on shore birds. In bright light, any f4 lens seens to do well with it. If I can find the pictures, I'll post some samples. Regards, Bob S. On 9/1/07, P. J. Alling <[EMAIL PROTECTED]> wrote: > This was taken with the A*300mm f4.0 and F 1.7x converter. It wasn't > the brightest day, (conditions were somewhere between "cloudy bright" > and overcast, I've found that the 1.7x auto focuses nicely with lenses > with maximum apertures down to f4.0 under most conditions. (it's > really hard to get good exposures of these birds in bright sunlight). > > > > Perry Pellechia wrote: > > On 9/1/07, Digital Image Studio <[EMAIL PROTECTED]> wrote: > > > >> On 02/09/07, Perry Pellechia <[EMAIL PROTECTED]> wrote: > >> > > > > > >> Nice find, I bought one of mine at a similar price, the current > >> prices that they often acheive at auction these days seems absurd > >> as compared. Interestingly the current Pentax lens catalogue from > >> Japan indicates that they are still a current product. > >> > > > > If they are available I am surprised that no one from Japan is > > selling them on eBay. They would probably be able to turn a good > > profit with the prices they go for now. > > > > > >>> BTW, Any recommendations for a inexpensive 200mm lens to mate up > >>> with the TC? > >>> > >> Cheap no, it loves f2.8 lenses, anything slower and the AF may > >> become a bit flaky in anything but great light. > >> > > > > That's what I was afraid of. It seems to work very well with my > > Tamron 90mm/F2.8. I do not have many other MF lenses where a TC > > makes sense. > > > > > > > -- > Remember, it's pillage then burn. > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
