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Originally posted by Mike D View PostI'm still learning. What does the high ISO do?
ISO is the sensitivity of the sensor. You used to buy film that was a specific ISO. As the sensitivity of the sensor (or film) goes up, the amount of grain and noise in the image increases. These new sensors in the later model cameras are getting so much better that even pics at or near dusk can be grabbed that don't have the noise they would have had a couple camera models ago. This Canon I'm firing handles it really well. It's surprising me.
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Originally posted by Mike D View PostI'm still learning. What does the high ISO do?
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Originally posted by Casey View PostISO is the sensitivity of the sensor. You used to buy film that was a specific ISO. As the sensitivity of the sensor (or film) goes up, the amount of grain and noise in the image increases. These new sensors in the later model cameras are getting so much better that even pics at or near dusk can be grabbed that don't have the noise they would have had a couple camera models ago. This Canon I'm firing handles it really well. It's surprising me.
Originally posted by El Viejo View PostBasically, ISO is the measure of the sensitivity of the image sensor. The lower the number the less sensitive your camera is to light and the finer the grain. The higher the number the more sensitive your camera is to light, but the images tend to be grainier. So if you are trying to photograph a low-light scene, a higher ISO rating on your camera allows it to capture more light in less time. Back in the film days, graininess was more of a problem than with today's digital sensors. Casey's deer image at a very high ISO (3200) shows absolutely no graininess that I can see. I hope that helps.
Got it, thanks. Casey were you shooting free hand or on a tripod? Just curios about the need for taking the shot at such an high ISO.
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