if the FF body had same sensor pixel density as proposed by others as their best APS sensors, cropping the FF image would give same result as the APS, in that case the APS body doesn't have any "lower cost long teles" advantage, you could do same with the FF body if desired. Just crop the FF image to APS size.
Not only that, but even if the FF sensor were same resolution as the APS sensors the tele performance would most likely be better with the longer F.L. lenses on FF than the shorter FL lenses on APS because generally speaking long teles are not the sharpest tools in the shed and the increase in format size from APS to FF helps soft lenses more than it helps razor sharp ones. -- J.C. O'Connell (mailto:[email protected]) Home Page - www.jchriso.com Join the Audio CD PLAYER DISCUSSION list - http://tech.groups.yahoo.com/group/cdplayers/ -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of John Francis Sent: Saturday, August 29, 2009 8:51 PM To: Pentax-Discuss Mail List Subject: Re: OT: Sony Releases A850 FF Camera for $2,000 On Sat, Aug 29, 2009 at 07:19:45PM -0400, Adam Maas wrote: > On Sat, Aug 29, 2009 at 7:00 PM, J.C. O'Connell<[email protected]> > wrote: > > huh, pentax doesn't have a FF sensor. If they did > > it would around $2K like Sony, no? > > > > How many much cheaper non-DA lenses would it take to make up the > > extra $800 or so for the FF Penatx body vs the APS body? > > > > Answer - not many at all. A few at most. > > -- > > J.C. O'Connell (mailto:[email protected]) > > The question is 'how many of these cheaper non-DA lenses exist' and > the response is none. Nor do they exist in the three systems that > offer both APS-C and FF bodies. Nor will they exist anytime soon. The > reality is you're going to pay around double for FF lenses which do > not restrict FF sensor performance with current sensors than you will > for APS-C lenses which do not restrict current APS-C sensor > performance, this applies to normal and wide zooms as well as wide > primes (there are plenty of normal and longer primes and telephoto > zooms which are up to both APS-C and FF sensors, but there's no money > to be saved there either since the ones which can perform adequately > on only one type of sensor are doing so on APS-C). Plus, for telephotos, the "crop factor" works to the advantage of APS-C. It's a lot cheaper to buy a 200mm/f2.8 or 400mm/f5.6 than it is to buy a 300mm/f2.8 or 600mm/f5.6. -- PDML Pentax-Discuss Mail List [email protected] 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 [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
