Photo editing and post-processing techniques.
Why does the sky come out white? How many stops of dynamic range you have, how to measure a scene's range, and what exposure blending really recovers.
Where photo noise actually comes from and how ISO fits in: the two sources of noise, and what really reduces it in the field and in editing.
How to shoot black and white photos: why desaturating makes mud, what the B&W colour mixer really does, and which scenes actually suit monochrome.
Should you shoot RAW or JPEG? The real differences, the flexibility-versus-file-size trade-off, and which one to pick for every kind of shot.
The order in which white balance, tone curve, noise reduction and sharpening should be done when editing RAW files.
How to read the histogram, clipping warnings and the expose-to-the-right technique — the truth of data against the lie of the screen.
What is white balance and when should you fix it? The Kelvin scale, presets and mixed-light fixes for capturing accurate colours, with examples.