difference between fs100 sensor, 5d mk2 and af100?

[natums]

Interesting, learn something new every day. Thanks Barry!

 

[nyvz]

The AF100 would be shallower in DOF in that scenario. The difference between the AF100 and the FS100 is about 1/3 of an f-stop. So you'd have to open up the FS100 to f/3.2 to get the same DOF between them.

My calculations say its closer to 3/4 of a stop:

23.6mm / 17.8mm = 1.33x crop

1.33^2 = 1.77 stops = .77 stop difference

Let me know if you get something different though. The GH2 on the other hand is closer to 1/2 stop with its slightly larger m43 sensor.

 

[cgold]

I believe the AF100 has the same "slightly larger" sized sensor as the GH2.

 

[nyvz]

I believe the AF100 has the same "slightly larger" sized sensor as the GH2.

It seems that it does, but the active area is smaller. From what I understand, they both have the same 19.3mm wide sensor, but the GH2 uses a 18.8mm wide active area, AF100 17.8mm, and m4/3 standard specs are 17.3mm wide.