Hi,
The dof with the 50mm at 1.4 would not be the same as the dof with the
100mm at 2.8. If you shot them both at f/2.8 then the dof would be the
same.
Using a 50mm lens, to get a 2m subject in the vf you'd have to stand
2.83m away and your dof at f/1.4 would be 0.32m. With the aperture set
to 2.8 your dof would be 0.65m.
With a 50m+2X you'd have to stand 5.7m away from the subject to get
it the same size in the vf. Shooting wide open (ie at f/2.8) your dof
would be 0.65m.
---
Bob
mailto:[EMAIL PROTECTED]
Saturday, August 04, 2001, 4:26:29 PM, you wrote:
> I was wondering, suppose I shoot a particular subject
> with my 50 f1.4 wide open, and shoot the same subject
> framing it just like the first, with the same lens
> wide open and a 2x TC (effectively making the lens
> f2.8), would the DOF be the same?
> Kelvin
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