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You may find useful this wikipedia page You can calculate the exposure value with the given formula: EV = log2(N^2 / t) setting: N = the f-number (aperture) you will use t = the exposure time you will use they both depends on your camera: search a middle aperture for your lens and a time you will likely use (a rule of thumb is that the slower time ...


4

It's not trivial to calculate from scratch the amount of light required (as you have no idea how much is absorbed, reflected etc. and it will vary according to how the lights are positioned). What you can do, is find out what shutter speed your camera meter is suggesting currently and work it out from there. You'll want to aim for 1/2f where f is the focal ...



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