![]() ![]() For pan shots, 1/15th of a second up to 1/60th usually work well, depending on how fast the object is moving. If you want to take a panning shot with a kid on a speeding bicycle going past you, for example, (panning is when you swing the camera and track the object you are photographing), and as a result, streak the background but keep the object sharp, then you will want to use a slower shutter speed and a lower ISO. If you want to freeze action, for example, then use a higher ISO and a faster shutter speed (a shutter speed of 1/1000th of a second will freeze most action). In conclusion to Part 1, manipulating ISO, Shutter Speed & F-stop allow you to create different effects of the same image that you are looking at. ![]() Your shutter speeds will be higher, and if you are outside, your aperture will have to be a high f-number too (resulting in a lot of depth of field). If you want a grainy look in your picture, like you might want to create in a soft, close up portrait, then by all means shoot at ISO800, 1600, 3200, 6400 or even ISO12800. Now you may be asking the obvious, "If I can use a much faster shutter speed at ISO800 than at ISO100, then why wouldn't I just shoot all my pictures at 800"? A good question! The answer is that the higher the ISO, the more the image quality degrades. Consequently, ASA (ISO)100 requires twice as much light to expose the digital sensor properly as ASA200 would, etc, etc. LIGHTHOUSE KEEPER JOBS 2011 FULLEach of these sensitivity numbers corresponds to one f-stop or to one full jump in shutter speed. ![]() ISO (often called ASA) - ISO is the measure of the film or digital sensor's sensitivity. ![]()
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