What is ISO setting on your digital SLR (DSLR) camera and how do you use it?
The letters ISO on your digital camera settings refer to the film speed. Even though your camera is most likely not film at all, but rather digital, the ISO setting still does has the same function as older film cameras. ISO determines how sensitive the image sensor is to light. If your after more technical information, Wikipedia has a good article on ISO speed.
The most common ISO speed settings are: 100, 200, 400 and 800.
Depending on your digital camera model you may also have them in the range of 64, 100, 160, 200, 400, 640, 800, 1600.
On a Canon digital 400D (also known as Rebel XTi) you can see what the ISO setting is by looking at the rear LCD. This is similar to most SLR digital cameras. If you can't see this in your specific model, refer to your manual. As you can see by the example on the right, the ISO in this case is set at 100.
The lower the ISO number, the slower the speed. The higher the ISO number, for example 1600 the faster the speed.
General Rules and tips for ISO Settings:
Use an ISO of 100 or 200 when taking photographs outside in sunny conditions.
If the sky is overcast or it is evening time, then use an ISO within the range of 400 to 800.
Night time or in cases of low light you might need to set your digital camera ISO to 1600. If you don't then your photo will appear too dark if at all.
The letters ISO on your digital camera settings refer to the film speed. Even though your camera is most likely not film at all, but rather digital, the ISO setting still does has the same function as older film cameras. ISO determines how sensitive the image sensor is to light. If your after more technical information, Wikipedia has a good article on ISO speed.
The most common ISO speed settings are: 100, 200, 400 and 800.
Depending on your digital camera model you may also have them in the range of 64, 100, 160, 200, 400, 640, 800, 1600.On a Canon digital 400D (also known as Rebel XTi) you can see what the ISO setting is by looking at the rear LCD. This is similar to most SLR digital cameras. If you can't see this in your specific model, refer to your manual. As you can see by the example on the right, the ISO in this case is set at 100.
The lower the ISO number, the slower the speed. The higher the ISO number, for example 1600 the faster the speed.
General Rules and tips for ISO Settings:
Use an ISO of 100 or 200 when taking photographs outside in sunny conditions.
If the sky is overcast or it is evening time, then use an ISO within the range of 400 to 800.
Night time or in cases of low light you might need to set your digital camera ISO to 1600. If you don't then your photo will appear too dark if at all.
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