Cropping has everything to do with it. You can crop a shot form a 25mm so it looks identical to the shot you would get from a 85 mm. (focal length does not change perspective). I believe DOF is very improtant in portraits, being one of the reasons for using short telephotos for portraits, where you don't want too much DOF, like a perfectly sharp nose or ears. Jens Bladt mailto:[EMAIL PROTECTED] http://hjem.get2net.dk/bladt
-----Oprindelig meddelelse----- Fra: William Robb [mailto:[EMAIL PROTECTED] Sendt: 7. august 2004 04:06 Til: [EMAIL PROTECTED] Emne: Re: first question ----- Original Message ----- From: "Jens Bladt" Subject: Re: first question > > Don't forget the camera position, not the lens determines > the perspective. So a 85mm might be ideal for a head and shoulders/upper > body > shot while a 135mm might me perfect for a very tight head shot BOTH > with identical perspective and taken from same camera position! > That's true - in theory. But who would crop a 28 or 35mm shot so much it > looks like it was shot with a 85mm ? And annother thing. Wouldn't the DOF be > different? I mean the cropped 28mm picture (85mm look-alike-crop) vs. the > true 85mm shot? Well, no. It is true in practice. Cropping has nothing to do with it. If the cropped 28mm shot was taken at the same aperture as the uncropped 35mm shot, the DOF would be about the same as well. Not that DOF has anything to do with perspective. William Robb
