privatebydesign said:Pi said:Matthew19 said:The simplest answer is from Gale Tattersall, DP of the TV show HOUSE : a larger sensor requires a longer lens to achieve the same field of view. The longer the lens the less DOF. (aperture staying the same of course)
Which aperture: the f-stop or the physical one?
If it is the former, start with the 200/2 on crop. How do you get more DOF with 320mm on FF?
Mr Tattersall was over simplifying.
How do you get more DOF with a FF than a 200/f2 on a crop camera. Easy, use a lens with a smaller physical aperture than 100mm, a 100-400 f4-5.6 would do the job.
I meant: how do you get less DOF, which was consistent with the post I replied to. And, to be more precise, how do you get 1 1/3 stop less, which is what the difference in the sensor sizes suggests.