JonasY wrote: carstenw wrote: Spyro P. wrote:
if it was full frame, ie it had to cover 4X as big a sensor area, how much bigger would it have to be
Do you mean at 75mm, or at the same effective focal length, i.e. 150mm? For the former, look at the Leica 75/2 M lens. For the latter, look at the Leica 180/2 for an estimate.
More like a 150/4. I can\'t understand why people justify to compare to a f/2 lens for 35 mm film. A 180/2 will have much thinner DOF and about two stops of light advantage coupled on a modern FF camera. Two different animals.
If you can\'t understand it, I guess you haven\'t really tried. I am far less concerned with the DoF than with the light gathering ability, as simple as that.
Feb 13, 2012 at 02:48 PM
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