3 ms·
Depth of field changes by the equivalent of one stop from full frame to aps-c, another from aps-c to micro four thirds. Thus, a f/2.8 zoom on mft shoots like a
by hengheng 9y ago
Depth of field changes by the equivalent of one stop from full frame to aps-c, another from aps-c to micro four thirds. Thus, a f/2.8 zoom on mft shoots like a f/5.6 zoom on full frame.
Now if there only were fast full frame lenses for Sony E ...
- mamp 9y agoWhat are you looking for? You have native 35mm, 50mm, 85mm at f1.4, not to mention the very sharp 55 f1.8. You have the 16-35mm and 24-70mm at f2.8. Sigma have just announced their range of primes for E-Mount. I use the Canon 135 f2 and 35 f1.4 using a Metabones adapter. Not as good as native E-mount but pretty good. Sony lack the range in long zooms though.
- PuffinBlue 9y agoProper conversion maths is: Focal length x crop factor Aperture x crop factor ISO x crop factor squared This is a general statement. Something like ISO performance can be affected by engineering if the sensor (BSI vs old tech for instance) but based on the underlying physics the above holds true.