Re: [Avid-L2] New Nikon D3

I just pulled this little tidbit from a post by Daniel Browning on the
cinematographer's mailing list:

That's correct. When used at the same f-number and ISO as the 5D2, it is
slightly noisier. The reason for this is that the 5D2 and 7D have the
same
performance per area, but the 5D2 has more area, and therefore less
noise.

If you stop down the 5D2 so that it has the same DOF as the 7D by
applying
the 1.6X crop factor to the f-number, then increase the ISO to
compensate
(ISO * 1.6^2), then the noise comes out the same. This has several
implications:

* When the 7D and 5D2 are used at the same DOF, then noise is the same.
* The 7D does not have a "deep DOF advantage".
* The 5D2 does not have a "less noise advantage" without thinner DOF.

On Oct 16, 2009, at 6:03 PM, Roger Shufflebottom wrote:

> Ah, 1/3 diag - small. Fair enough.

[Non-text portions of this message have been removed]

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