 BetterPhoto Member |
Digital vs. Conventional Aperture Settings I understand that the difference between digital and conventional aperture settings is due to the shorter focal length of the digital lens. True or False? If this is true, are conversion charts available? I use a FujiFilm S5000 and I believe it can be set to Aperture Priority mode. I don't really care to experiment a lot and think that a downloadable conversion / comparison chart would be handy. Thanks a bunch and I truly enjoy what I have learned through this site. Bob
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Wing Wong |
Hmm.. the settings on your camera are already calibrated for the differences in sensor size and thus the resulting focal lengths. Whenever you see the wording "35mm equivelent", it is telling you the equivelent focal length for a given 35mm camera setup. So I guess the answer would be false. But it depends on what it is that you are really asking... ie, why is the aperture important in your case? I use a DSLR with an aperture setting that ranges from 2.8F to 11F along the focal range of the lens. Let's me throw things into and out of focus as I want and/or augment the amount of light getting in to stop/blur motion. I'm using the Minolta A1. Wing
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Jon Close |
With respect to exposure, there is no difference. If f/4 and 1/250 gives the correct exposure for ISO 200 film, the same aperture and shutter speed will give the correct exposure for a digital camera set for ISO 200. With respect to depth of field, the shorter focal length of the digital lens means you'll have much greater DoF than with the same aperture setting on the equivalent 35mm focal length. The zoom lens on the S5000 gives the equivalent view of a 37mm - 370mm on a 35mm film camera, but the actual focal length is just 5.6mm - 56mm. The depth of field at 5.6mm and f/2.8 is equivalent to 37mm and f/18.4. Ie., for depth of field, the same equivalence multiple for focal length is applied to f-number.
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Wing Wong |
Ah... so it would be harder to throw things out of focus.
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