Sensor Stupidity - I can't stand it anymore! [RANT]

Started Feb 22, 2010 | Discussions thread
Dennis Forum Pro • Posts: 17,279
Re: Reality.

Dejan Malikovski wrote:

It does make a difference of 1.5 stop in DoF. It is the same with FF and APS, another stop.

1.333 is the FL multiplier between 4/3 and APS-C.

4/3 50mm f4 @ 3meters = 0.43m dof
APS 75mm f7.1 @ 3meters = 0.45m dof

APS-C 66.7mm f/5.3 is what you should be looking at.

FF 100mm f8 @ 3meters = 0.42m dof

as you can see the difference in the real world, for the same exact picture, from the same exact position of the camera, and the same exact position of the subject, and the same exact distance of focus, and the same exact framing, is 1.5 stops to APS and 2 stops to Fx.

It's a little less than one stop to APS-C and a little more than 1 more stop from APS-C to FF (for 2 stops total as you've said).

  • Dennis

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