On Tuesday 14 August 2007 16:19, Simon Ransome wrote:
On the issue of focal lengths, the "standard" for dSLRs is the APS-C sensor (although there are some with 4/3rds and full-frame sensors). This is smaller than film and ends up giving a crop factor of about 1.5, which means that a 50mm lens on a dSLR becomes about the same as a 75mm lens on a 35mm film camera. However, this is *cropping*, and it does not actually alter the effective magnification of the lens.
Agreed - You just can not go changing the laws of physics.. The number of times I've called oik@jessops a few choice names (apparently, the manager), when told a 300mm lens magically becomes a 450mm lens on a digital camera..
I've found http://doug.kerr.home.att.net/pumpkin/ to have a number of detailed, technical ramblings on the subject of digital photography.
Regards, Paul.