The point is that if christine had walked up the drive with the 100mm lens and stood in the correct spot you would not be able to tell the difference between the 100mm and 170mm shots. The same applies to DOF.
__________________
Rob
-----------------------------------------------------
Solar powered Box Brownie Mk2
Captain Sunshine, to be such a man as he, and walk so pure between the earth and the sea.
WPF Gallery
Birdforum Gallery
|