Dnia 26-02-2003 o godz. 23:15 Chris Brogden napisal: > The myth about digital offering more DOF is partly true, though. To get a > DSLR lens that magnifies things as much as a 50mm lens for a 35mm film > camera does, you'll need to go with a DSLR lens with a focal length of > roughly 35mm (assuming a 1.5x conversion factor). When a subject looks > the same size through a 35mm lens and a 50mm lens, the shot taken with the > 35mm lens will have more DOF than that taken with the 50mm lens.
AFAIK if your subject is of the same size the DOF is exactly the same regardles of focal length used. In DSLR we have a bit different case - the subject is not projected on media as the same size - it is smaller in APS DSLR and than magnified so it seems as it uses the same part of the frame as in regular SLR. So here we have a case od the same subject distance giving as the same frame with different focal lengths. And this results in greater DOF on APS DSLR. Maciej ---------------------------------------------------------------- Konkurs "Europa Moich Marzeń". Wygraj wyjazd do Brukseli, indeks wyższej uczelni lub zestaw komputerowy! < http://www.konkurs.org.pl >
