To me, the point is that you make a full frame DSLR body attractive to people who own mostly APS-C lenses. They only have to buy one accessory (the 1.4x teleconverter) to make them useable.
Rather than seeing FF body and lens kits, don't be surprised if you see FF body and "full frame converter" kits. This is little different than people buying adapters to put different lenses on their Sony full frame Alpha 7. On Mon, Jan 27, 2014 at 2:17 PM, Dario Bonazza <[email protected]> wrote: > Interesting (?) question: in case the 1.4x TC will allow DA lenses to cover > FA sensor format, one could think it's a great way to make all DA lenses > work with their intended FOV on a FA body. E.g. a 14mm used alone on a DA > body will become a 20mm by using it via the 1.4x TC on a FA body, thus > resulting in more or less the same FOV on different format cameras. > > Great, but what's the point of spreading the same amount of light gathered > by the same front lens on a larger sensor having say the same pixel count > (e.g. 24 MP) while losing one stop for exposure? > > > Dario > > > -----Messaggio originale----- From: Dario Bonazza > Sent: Monday, January 27, 2014 9:08 PM > > To: Pentax-Discuss Mail List > Subject: Re: Pentax 1.4x converter > > In other words, a 14mm x 1.4x becomes a true 19.6mm lens - hence > irrespectively of sensor size - and not an "equivalent to XY mm" on a given > format. > The question to be answered is whether such a combo of lens and TC will give > an image circle covering 24x36mm format or not. > Dario > > -----Messaggio originale----- From: Dario Bonazza > Sent: Monday, January 27, 2014 9:04 PM > To: Pentax-Discuss Mail List > Subject: Re: Pentax 1.4x converter > > No, the 14mm x 1.4x will become a 19.6mm f/4 in itself, whichever camera (if > any) you put behind it. > In case the resulting image will be large enough to cover the 24x36mm format > (not yet confirmed), it will project a FOV corresponding to a 19.6mm f/4 > lens. > Dario > > -----Messaggio originale----- From: Alastair Robertson > Sent: Monday, January 27, 2014 8:54 PM > To: Pentax-Discuss Mail List > Subject: Re: Pentax 1.4x converter > > wouldn't the lack of a 1.54 crop factor that APC-S sensor cameras have > over 35mm frame more-or-less cancel out the 1.4x converter effect so > that a DA14mm + 1.4TC on a 35mm frame would end up being a 14/1.54 x > 1.4 = 12.7mm FOV on full frame? > > Alastair > > On 28 January 2014 08:42, Darren Addy <[email protected]> wrote: >> >> On Sun, Jan 26, 2014 at 10:07 AM, Mark Roberts >> <[email protected]> wrote: >>> >>> (which he says Pentax is calling a "Full Frame Converter") >> >> >> WUTT >> >> If this is true, is it possible that the converter will allow DA >> lenses (that don't quite cover full frame) to cover them adequately >> (albeit at 1.4x the focal length). This would be most beneficial to >> the faster DA lenses that don't cover full frame: >> DA 14mm f/2.8 (21mm equiv. FOV on APS-C) would become a 21mm f/4 on full >> frame. >> DA* 16-50mm f2.8 (with 24-75mm equiv. FOV) would become a 24-70mm f/4 >> on full frame >> DA* 50-135mm f2.8 (with 75-197mm equiv FOV) would become a 70-190mm f4 >> on full frame >> >> -- >> 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. > > > ----- > Nessun virus nel messaggio. > Controllato da AVG - www.avg.com > Versione: 2013.0.3462 / Database dei virus: 3681/7037 - Data di rilascio: > 27/01/2014 > > > -- > 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. > > > ----- > Nessun virus nel messaggio. > Controllato da AVG - www.avg.com > Versione: 2013.0.3462 / Database dei virus: 3681/7037 - Data di rilascio: > 27/01/2014 > > > -- > 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. > > > ----- > Nessun virus nel messaggio. > Controllato da AVG - www.avg.com > Versione: 2013.0.3462 / Database dei virus: 3681/7037 - Data di rilascio: > 27/01/2014 > > -- > 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. -- Photographers must learn not to be ashamed to have their photographs look like photographs. ~ Alfred Stieglitz -- 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.
