On Dec 17, 2010, at 7:17 PM, J.C. O'Connell wrote: > tamron made a 60-300mm SP lens the might fit your bill. > tokina made a real nice 100-300 f4 that's somewhat > hard to find. I believe it was available with a fixed > Pentax KA mount ( the tamron uses mount adapters ). > > Pentax also made a few 100-300mm lenses in the F > and FA series. I don't know if those are any good > or not.
They're just okay. Nowhere near as good as the 60-250, in either build quality or performance. And it's good to remember that only the SDM lenses take full advantage of the improved autofocus speed of the K5. Paul > -- > J.C. O'Connell (mailto:hifis...@gate.net) > Join the CD PLAYER & DISC Discussions : > http://tech.groups.yahoo.com/group/cdplayers/ > http://launch.groups.yahoo.com/group/cdsound/ > > > -----Original Message----- > From: pdml-boun...@pdml.net [mailto:pdml-boun...@pdml.net] On Behalf Of > Larry Colen > Sent: Friday, December 17, 2010 6:50 PM > To: Pentax-Discuss Mail List > Subject: Re: So, 60-250 F4 or a 3rd party 70-200 2.8? > > > > On Dec 17, 2010, at 3:39 PM, Cory Waters wrote: > >> Thinking about surprising Santa this year and stuffing my own >> stocking. I'd likely use the lens for youth soccer (futball), nature, >> and auto racing shots. I know the 2.8 would be nice (faster is ALWAYS >> better, right?) > > Only if the lens is sharp enough wide open. > >> The Pentax lens has a bit more reach in either direction. My current >> lens for shooting these soccer games is the DA 50-200. I get decent >> shots but but they mostly need cropping. The extra 50mm would be nice >> and I'd be moving from 5.6 to F4 so that's better. > > 200 to 250 would be noticeable but not a huge difference. > > The important question is "why are you losing shots?". If you're shooting > outdoors, you generally don't need to go from 4 to 2.8, especially at the > long end. Depth of field is pretty shallow too, remember Igor commenting on > how shallow my depth of field was at 135/2.8 > >> The Pentax would have better integration with my K10 and future >> bodies. Do any of the 3rd party lenses work with the supersonic focus >> motor? >> >> The Pentax lens is more than a little bit more money though... >> >> What to do? > > It sounds to me that what you need is a bigma, the Sigma 50-500. It has a > few shortcomings, but is arguably in class by itself. I tried to find a > sharper faster 500mm prime that cost less money, but couldn't. > > >> >> Cory >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. > > -- > Larry Colen l...@red4est.com sent from i4est > > > > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
