Noise is considered an error. Post-production software corrects it out of the box. But using it for aesthetic purposes, as we do with grainy silver film, expands the creative range of our photographs.

Super-resolution in Lightroom and Camera Raw quadruples the resolution of raw files. Photoshop's image stacking technique improves resolution.

The sky is often the backdrop for our landscape photographs. But sometimes its appearance leaves us disappointed. Since version 22, Photoshop has made it easier for us to replace it.

Incident light metering is a very effective way of determining the exposure of a shot. It is useful for both digital and analog photography. With negative film, in both black & white and color, it requires a few precautions.