No shallow DoF on the 'tiny' GH2 sensor?

It is all based on your composition.
In small spaces when the background is very close to your subject I agree with you.
Taking a few steps back to get the same frame will change your focal distance .
Not a big deal for me.
But If the background is far away from the subject you will get the same bokeh and DOF on any camera out there if you are using the same lens.

Psynema said:
Smaller sensors have greater DOF, but the crop factor, of course, makes the lens longer, so it's not the same frame size and comparing apples to oranges in some was. IE - 50mm = 25mm on a GH1, and even though they're equivalent framing wise, a 50mm lens on a Mark ii will have more bokeh than 25mm on a GH1 at the same aperture giving the same frame/distance.

The sensor size matters, but again, your 1/3 inch chip HDV cameras have more in focus since the lens is ultra wide to make up for the small sensor, so it's an indirect factor
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Lucas Adamson said:
Sure Barry, so expressing it yet another way, shooting a face like the original post photo with say a 50 f1.4 on both a 5D and a GH2 would give different dof, on account of the distance to subject to achieve the same framing.
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Yes, but -- it is the changing of the subject distance that causes the difference in DOF.

If you shot the same scene from the same spot pointed at the same subject, both using that 50 f/1.4 at the same f-stop, then both shots will have identical DOF. The difference would be in how much of the frame you can see. That's the difference the bigger sensor makes -- it expands the field of view.
 
using the AF100, i found the image charachteristics, field of view, and Depth of field to be exactly what they should be if you were shooting 35mm film.

get used to it. this is what movies look like. Always have.
 
The biggest key for people to keep in mind is subject distance, and that as you approach hyperfocal everything flattens.

i've been posting this around too much but everyone seems to think it helps illustrate the sensor size debate:

 
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