It would also be good to list the size of the image circle of the lens. On Sun, Dec 19, 2010 at 5:25 PM, paul stenquist <[email protected]> wrote: > > On Dec 19, 2010, at 5:16 PM, Steven Desjardins wrote: > >> We are just seeing the overlap of film stuff and digital sensors. So >> many lenses were designed for the 35 mm format. We still use "medium >> format" even though the sensor isn't that size. Look at the 645D. >> The sensor isn't even close to 6 x4.5, but it was based on that body >> design. It will take years (if ever) for a more rational terminology >> to emerge, but as JCO points out we all know what it means. >> History-laden terminology has a certain charm for many and, it seems, >> especially photographers. >> >> I plan to start calling APS-C "the happy format" and see if it catches on. >> > > There are now so many different sensor sizes, that a description in > millimeters would be most apt and informative. I expect we'll eventually come > around to that, after the supply of silly names has been exhausted. With > film, there was a reason to keep the range of sizes to a manageable level, > and those sizes were largely dictated by the available supply of film. Now, > with a wide range of sizes available, dimensional descriptions make sense. > Paul >> >> On Sun, Dec 19, 2010 at 4:59 PM, J.C. O'Connell <[email protected]> wrote: >>> no, the way the term "full frame" is actually >>> used in todays nomenclature is 24x36 sensor >>> and lenses. You can mean it to whatever you >>> want but its not anything but 24x36 at this >>> point in time technology wise. BTW, I want >>> Pentax to do a FF dslr, do you know what I >>> mean? I think you do. >>> >>> -- >>> J.C. O'Connell (mailto:[email protected]) >>> Join the CD PLAYER & DISC Discussions : >>> http://tech.groups.yahoo.com/group/cdplayers/ >>> http://launch.groups.yahoo.com/group/cdsound/ >>> >>> >>> -----Original Message----- >>> From: [email protected] [mailto:[email protected]] On Behalf Of Paul >>> Stenquist >>> Sent: Sunday, December 19, 2010 4:53 PM >>> To: Pentax-Discuss Mail List >>> Subject: Re: New 12-35 lens on the way >>> >>> >>> "Full frame" is a bit of silliness. It's irrelevant. Is a 645 camera "double >>> frame?" There are many sensor sizes. All of them are full. Paul On Dec 19, >>> 2010, at 4:24 PM, J.C. O'Connell wrote: >>> >>>> In my opinion, the modern DSLR usage of the term "full frame" means >>>> cameras and lenses designed for 24x36mm sensors. It doesn't mean all >>>> the various formats out there are full frame just because the lens >>>> fits and covers whatever non 24x36mm frame size is being used. Pentax >>>> DA lenses are not "full frame" lenses in the context of todays gear. >>>> >>>> -- >>>> J.C. O'Connell (mailto:[email protected]) >>>> Join the CD PLAYER & DISC Discussions : >>>> http://tech.groups.yahoo.com/group/cdplayers/ >>>> http://launch.groups.yahoo.com/group/cdsound/ >>>> >>>> >>>> -----Original Message----- >>>> From: [email protected] [mailto:[email protected]] On Behalf >>>> Of Boris Liberman >>>> Sent: Sunday, December 19, 2010 8:00 AM >>>> To: Pentax-Discuss Mail List >>>> Subject: Re: New 12-35 lens on the way >>>> >>>> >>>> On 12/19/2010 2:11 PM, paul stenquist wrote: >>>>> Then why worry about the lens frame? A lens designed for APS-C will >>>>> outperform one designed for 24 x 36. (They're both full frame. Just >>>>> different frames.) Paul >>>> >>>> I opine (may be wrong, but that's my right) that some 24x36 designed >>>> lenses outperform some 18x24 ones. In particular, some Sigma EX 24x36 >>>> lenses show impressive degree of correction of geometric distortions. >>>> For my kind of shooting it makes them particularly attractive given >>>> their price tag. >>>> >>>> You're however absolutely right that there are no "partial" frame >>>> lenses >>>> here. Unless of course, we're speaking of circular fish eyes /grin/. >>>> >>>> Boris >>>> >>>> -- >>>> 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. >>> >>> >>> -- >>> 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. >>> >> >> >> >> -- >> Steve Desjardins >> >> -- >> 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. >
-- Steve Desjardins -- 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.
