Archived posting to the Leica Users Group, 2009/02/06
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Don wins best answer prize ! Don, check is in the mail ;-) ----- Original Message ----- From: "Don Dory" <don.dory@gmail.com> To: "Leica Users Group" <lug@leica-users.org> Sent: Thursday, February 05, 2009 10:25 PM Subject: Re: [Leica] Is the DOF using a digital sensor any different than thatof film? > Vick,DOF depends on focal length of the lens, aperture used, and distance > to > subject, and the degree of enlargement to some extant. So, with a crop > sensor you tend to use a wider lens at a greater distance than that same > focal length on a 24x36; ergo greater apparent DOF. On the other hand, if > you use the same focal length at the same aperture at the same distance > and > enlarge the same then the same apparent DOF; you will however get a > different perspective as the crop sensor will not include as much of the > scene. > > On Thu, Feb 5, 2009 at 5:26 PM, Vick Ko <vick.ko@sympatico.ca> wrote: > >> Is the DOF using a digital sensor (e.g M8, Pana G1) any different than >> that >> of film? >> >> In a question on Rangefinder forum, I was asking about using the Pana G1 >> as >> the most economical way to play "digital M", and got into a discussion on >> "loss of DOF" with digital sensors. >> >> I never understood that. With a crop sensor, isn't it just like shooting >> with a third of the 36 x 24mm frame covered? >> >> The razor thin DOF of my Noctilux is still razor thin, just that the >> image >> that I'm taking is like cropping it to that of a 100mm lens. Or, to think >> of >> it another way, my Noctilux becomes a 100mm f1 portrait lens, a focal >> length >> that once was considered close to perfect for portraits. >> >> And fortunately, with the Panasonic, I see what I'm framing. >> >> Isn't that so, about the DOF? >> >> regards >> Vick >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information >> > > > > -- > Don > don.dory@gmail.com > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information -------------------------------------------------------------------------------- No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.0.233 / Virus Database: 270.10.18/1936 - Release Date: 02/05/09 11:34:00