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Amazing lens, incredible sharpness

Started Aug 20, 2013 | User reviews thread
Anders W
Anders W Forum Pro • Posts: 22,144
Re: Doesn't that depend on what you mean by 1.8?
3

tinternaut wrote:

In terms of DoF, yes it's a 3.6 equivalent, but in terms of light gathering (i.e. the shutter speed it enables one to achieve at a given aperture for correct exposure), surely 1.8 is 1.8.

With respect to exposure (light per sensor area unit, e.g., per square mm), it is f/1.8.

With respect to to total light accumulation (light gathered by the sensor as a whole, which depends not only on exposure but also on how large the sensor is), depth of field, and diffraction, it is equivalent to f/3.6 on FF.

 Anders W's gear list:Anders W's gear list
Panasonic Lumix DMC-G1 Olympus PEN-F Olympus E-M1 II Panasonic Lumix G Vario 14-45mm F3.5-5.6 ASPH OIS Panasonic Lumix G Vario 7-14mm F4 ASPH +20 more
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