Exposure
Exposure is the skill everything else sits on: too dark or too bright, and no amount of good composition rescues the frame. Start with the exposure triangle and how aperture, shutter speed and ISO trade against each other, then push each control to its extremes to see what it really does. Aperture decides depth of field, shutter speed decides whether motion freezes or blurs, and ISO buys brightness with noise. From there: reading a histogram instead of trusting the rear screen, using exposure compensation when the meter gets fooled, and knowing when highlights may clip and when they never should.
The Exposure Triangle: Aperture, Shutter Speed, and ISO
The exposure triangle is the single most important idea in photography. This guide explains how aperture, shutter speed and ISO trade off against each other in whole stops.
Aperture Explained: F-Stops and Depth of Field
Aperture controls both how much light enters your lens and how much of the scene stays sharp. Here is how to pick the right f-stop for any subject.
Shutter Speed Guide: Freeze Action or Create Blur
Shutter speed decides whether motion is frozen or smeared across the frame. Use this guide to match the speed to your subject and keep handheld shots sharp.
ISO Explained: Balancing Noise and Light
ISO sets how sensitive your camera is to light, and it is the noisiest variable in the triangle. Learn how far you can push it and when not to.
Exposure Compensation: Fixing Bright or Dark Photos
Exposure compensation is the fastest way to correct a photo your camera got wrong. Learn the EV scale and when to dial in plus or minus.
How to Read a Histogram for Better Exposures
The histogram is the most honest exposure tool your camera has. Here is how to read its shape and use it to judge highlights and shadows.