Noise can be the bane of the photographer’s life. It has been with us since the dawn of photography, first as grain in our negatives or transparencies and in the digital era the similar looking sensor noise.
Typically we encounter noise when we are shooting in low light and have to increase our ISO speeds to get an acceptable shutter speed.
This, of course, can be negated by carrying a tripod and shooting longer shutter speeds. However, we don’t always want to carry a tripod, especially if we are out all day. There also might be times when we need to use a small aperture and short shutter speed in low light.
Is there a way to control noise when we do shoot at high ISO? The answer is yes there is, its called image stacking and today we are going to look at how it is done.