Apologize if this question has been asked before. I do not own a digital DLR yet but am curious over this DOF differences. See http://www.photo.net/learn/optics/dofdigital/ for a technical explanation.
Techinal aside, how much more difficult it is to take a picture with background blur with digital SLR compared to a film SLR? I mean, when you take a portrait with a 90mm lens, you will most likely set the aperture around f/4 and focus on the eyes. If you own a DSLR with the same view, do you need to go to f/1.8 to get the same effect? From the article, it seems to relate to the lens' hyperfocal distance .... anyone with both digital and film SLR cares to comment on this?
Techinal aside, how much more difficult it is to take a picture with background blur with digital SLR compared to a film SLR? I mean, when you take a portrait with a 90mm lens, you will most likely set the aperture around f/4 and focus on the eyes. If you own a DSLR with the same view, do you need to go to f/1.8 to get the same effect? From the article, it seems to relate to the lens' hyperfocal distance .... anyone with both digital and film SLR cares to comment on this?