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<blockquote data-quote="Don Kuykendall_RIP" data-source="post: 402491" data-attributes="member: 6277">You don't say what camera you are shooting so that sort of limits what we can tell you. If you shot film in the past you would have bought 100 ASA film or 400ASA film. That was called the speed of the film. The higher the number the less light you needed to take a photo. The cost of that was the higher the number the noisier the photo would be. In film you would have said the photo was grainy. Modern digital cameras don't use film but instead they use a digital sensor that takes place of the film. ISO is the digital equivalent of ASA. It is done digitally instead of with film. The more expensive the camera the higher usable ISO you can use. With my D7100 I can shoot at ISO 1600 or even ISO 3200 and still get good results. With a less expensive camera like the D3100 I may only be able to shoot at ISO 800 before it gets to noisy to be good. Again, these are just examples.Tell us why you are asking and we can probably help you more.</blockquote>

[QUOTE="Don Kuykendall_RIP, post: 402491, member: 6277"] You don't say what camera you are shooting so that sort of limits what we can tell you. If you shot film in the past you would have bought 100 ASA film or 400ASA film. That was called the speed of the film. The higher the number the less light you needed to take a photo. The cost of that was the higher the number the noisier the photo would be. In film you would have said the photo was grainy. Modern digital cameras don't use film but instead they use a digital sensor that takes place of the film. ISO is the digital equivalent of ASA. It is done digitally instead of with film. The more expensive the camera the higher usable ISO you can use. With my D7100 I can shoot at ISO 1600 or even ISO 3200 and still get good results. With a less expensive camera like the D3100 I may only be able to shoot at ISO 800 before it gets to noisy to be good. Again, these are just examples. Tell us why you are asking and we can probably help you more. [/QUOTE]

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