Archived posting to the Leica Users Group, 2006/11/01
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Luis Lee nailed the DOF question to the barn door. I hadn't heard it explained like that in many years and it brought back vague memories of photo class. Now when I go out to shoot I'll be thinking about squeezing light rays instead of making images. :-) Walt Luis Ripoll wrote: >Hi to all the messages John, walt, Heining, Adam, Leon, Didier... > >Once I've read the different opinions I think that DOF is a relatively >concept, the illusion of sharpness diminishes when you enlarge a picture, >but accepting this relativity, what I think that's evident that every format >has his own lenses designed for based as standard or normal lens the >equivalent to the diagonal of the format. If we use a 50mm lens on a smaller >format that's would imply a decrease of DOF if we take a picture of a >subject at the same distance, on other words, a 50mm will become a "short" >tele and consequently at the same distance and aperture the DOF will >decrease. On the case, if you take the picture at more distance, due to the >small tele effect, I think that DOF will decrease too, based on the >relatively concept of DOF you have cropped the picture area and will obtain >consequently less DOF. > >Thanks for your all interesting opinions, > >Saludos desde Barcelona >Luis > > >_______________________________________________ >Leica Users Group. >See http://leica-users.org/mailman/listinfo/lug for more information > > >