Why no cameras with double exposure ?
kctan wrote: Are you people trying to extend the dynamic range virtually by taking an over and an under exposed shots and blend the twos in photoshop later during post production work? I've been doing this by using the auto bracketing exposure feature AEB to extend additional 5 stops (+/- 2 stops) for sunset shot with good detailed foreground. One shutter button pressed with 3 shots taken at - 2stop, N, + 2stop. I use the -2 and +2 to manipulate. kctan, How does your camera do that? 1. Expose three images. or 2. Make one exposure, then copy it three times with different levels of amplification. I suspect that latter is what it does, in which case you may not actually have more data to work with than with a single RAW image - which has all the same information in one image that appears in the three. Alan |
Why no cameras with double exposure ?
Dear Alan,
There is no way to extend the physical dynamic range of a camera but we can cheat it the virtual way. Expose 3 shots using the AEB feature i.e normal, over and under exposure shots and choose the best 2 to manipulate in photoshop blending with layer mask. Duplication in photoshop from 1 shot is not appropriate as when you come across wide dynamic range scene that the camera can't cope, it will loss detail in either shadow, hightlight or both depending on exposure. "Alan Meyer" wrote in message oups.com... kctan wrote: Are you people trying to extend the dynamic range virtually by taking an over and an under exposed shots and blend the twos in photoshop later during post production work? I've been doing this by using the auto bracketing exposure feature AEB to extend additional 5 stops (+/- 2 stops) for sunset shot with good detailed foreground. One shutter button pressed with 3 shots taken at - 2stop, N, + 2stop. I use the -2 and +2 to manipulate. kctan, How does your camera do that? 1. Expose three images. or 2. Make one exposure, then copy it three times with different levels of amplification. I suspect that latter is what it does, in which case you may not actually have more data to work with than with a single RAW image - which has all the same information in one image that appears in the three. Alan |
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