Understanding the Exposure Triangle: Aperture, Shutter Speed & ISO
The three variables that determine how bright your image is — and how they interact with each other. Practical examples with f-stop numbers and ISO values.
Straightforward coverage of exposure fundamentals, lens characteristics, RAW file handling, and camera body specifications — written for photographers who want facts, not filler.
Each article focuses on a single topic with concrete data, real equipment examples, and practical context for shooting in everyday conditions.
The three variables that determine how bright your image is — and how they interact with each other. Practical examples with f-stop numbers and ISO values.
A breakdown of prime vs zoom lenses, focal length ranges, maximum aperture trade-offs, and how mount systems restrict or expand your options.
What actually changes between shooting JPEG and RAW, which software handles RAW files, and when the extra storage space is worth the workflow complexity.
A 24MP RAW file from a Sony A7 III contains roughly 50MB of uncompressed data. The in-camera JPEG from the same shot weighs 8–12MB — and that difference in size corresponds to a significant difference in what you can do in post-processing.
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