Ÿ sec and f22, this one was a little overexposed, but I corrected that in Lightroom So how much more light does the different f-stops give. F4 lets in twice as much light as f8, f16 halves the amount of light again. With the great digital cameras these days we don’t really need to do the math, decided on if you want to use aperture control or time control. For aperture control you set the f-stop and the camera works out the time. For time control you set the time, 1/60 etc and the camera decides on the f-stop. - Vibeke (Friiskiwi) of www.pxleyes.com
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