O'Reilly logo

Mastering Apple Aperture by Thomas Fitzgerald

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Noise reduction

Noise is a constant problem in digital imaging, although modern cameras are getting better and better at handling noises in the images they capture. Noise in digital photography comes from two main sources.

The first is high ISO noise. This occurs when you turn up a camera's ISO and the increased sensitivity results in a noisy image. Cameras are getting better and better at this and it is becoming less of an issue, however, it is still a problem at extreme sensitivities.

The other area where noise occurs is when you push the exposure of an image and you recover details from the shadow areas. Some cameras are better than others, but because of the way digital imaging works, there is less data in the lower half of an image's brightness ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required