Yes. And no.
If everything is kept identical then full frame has a larger DOF because there is less enlargement of the image. Note that most DOF calculations are based on the assumption that you will print the image at 8x10 and view the image from a "normal" viewing distance.
The no part is because 105mm will give a wider field of view on a full frame camera which changes the composition. In order to have the same composition you would zoom the full frame camera to 165mm, and that change of focal length will give the full frame image a much more narrow DOF.
Thanks for the explanation. When I take the calculations listed in my post and adjust the crop to be at the equivalent of 65mm, I see the DOF is about 1ft, vs the .6ft when using a full frame at 105mm.




I'm hoping to try on some birds and or surfers tomorrow.
