1Dx Review

Started Jul 11, 2012 | Discussions thread
oysso
Regular MemberPosts: 471
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Re: 1Dx Review
In reply to ihv, Jul 11, 2012

ihv wrote:

oysso wrote:

ihv wrote:

Sensor size has nothing to do with it, it is the focal length in combination with aperture.
This concerns depth of field, bokeh is more a quality of a lens.

You forgot distance to focal plane is also very important factor for DOF.

Yes, but this is external factor, not a camera property. You can't change distance in camera, but one can change focal length.

And sensor size is affecting DOF. even if you tell otherwise.

Actually a FF has more DOF than a Cropped camera at same distance and focal length.

wrong:
7D with 50 mm at F2 and distance 100 cm: 2.89 cm DOF
5D II with 50 mm at F2 and distance 100 cm : 4.56 cm

so at same focal length the Full format has more DOF,
But at equivalet focal length is another story:
80 mm is equivalet to 50 mm for crop.
yields:
1.78 cm DOF for the 5D II,

So conclusion is:

Full frame has MORE DOF for same focal length. But if you want the same framing at same distance then you have to use different focal length and hence yields less DOF for full frame.

I don't believe so - test yourself:

1. take a shot with an FF camera
2. now crop the same shot in the computer (equivalent to a crop sensor camera)

Is the DOF different?

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