If your camera does not allow you to play with the shutter speed
setting, then taking fast moving objects could be a problem. Sometimes,
even though you a not taking a fast moving object, your hand moves and
the image is blurred. Sometimes, it’s not bright enough to take a
photo. So how do you deal with all these problems?
Well, use the ISO setting of your camera!
The ISO setting makes the light-sensing element of the camera “more” or “less” sensitive. If the light-sensing element is more sensitive, “little” light also will be sufficient to take an image. If little light is sufficient to take an image, you can do two things:
Generally the ISO numbers are like 100,200,400 etc. 100 means that
the “image sensor” is moderately sensitive. 200 means that
it is more sensitive. 400 means that is it most sensitive etc…
So if you have a really sensitive image sensor, a fast shutter speed
will be good enough to catch images. So next time you want to take a
fast object you will have to go for a high ISO number.
But the problem with ISO number is that, if you have a very high ISO number, you will get an image with a lot of noise. “Noise” basically means random colored dots in the middle of the image. This reduces the image quality.
So, use only a high enough ISO number so that you can capture the
motion you want to capture. Do not go higher than you need to go.
Generally, at nighttime, some digital cameras produce “blurred” images. So, to solve this problem too, you can increase the ISO number.
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