This came form a discussion a day or so ago, and we couldn't get to the bottom of it.
Extension tubes; I understand how they work in terms of image magnification, but why does the DOF drop off so dramatically? Couldn't find a simple answer on the web........
Something to do with changing the effectve lens focal length?
Extension tubes; I understand how they work in terms of image magnification, but why does the DOF drop off so dramatically? Couldn't find a simple answer on the web........
Something to do with changing the effectve lens focal length?