Working with noise reduction


show more Working with noise reduction provides you with in-depth training on Photography. Taught by Ben Long as part of the Photoshop CS5: Landscape Photography show less
please wait ...

Working with noise reduction

Throughout all of this talk of brightening and darkening images there is one important caveat that hasn't been mentioned. Sometimes there is a price to pay for brightening an image, and that price is noise. Some images actually come out of your camera with noise. Here's one right here, and if are not familiar with noise, this should make it pretty obvious what noise is. Less ugly noise sometimes just looks like film grain. Noise like this looks like little colored specks all over the place. There are two different kinds of noise; Luminance noise, which changes in brightness, that just look like film grain, and Chrominance noise.

And this image has a combination of both Chrominance noise being color splotches, sometimes they are big sometimes they are speckling patterns like this. Noise is simply a function of the electronics in your camera, just as if you turn up the amplifier on your stereo, you'll hear more noise and your music, that hissing sound. Same thing with your camer...

Working with noise reduction
Video duration: 5m 33s 6h 43m Intermediate

Viewers:

Working with noise reduction provides you with in-depth training on Photography. Taught by Ben Long as part of the Photoshop CS5: Landscape Photography

Subject:
Photography
Software:
Photoshop
Author:
please wait ...