Sigma BF Autofocus: How Does It Actually Perform?

The Sigma BF is a camera that sells itself on simplicity and build quality, which means its autofocus either holds up or it doesn't. There's no spec-sheet fluff to hide behind. If you've been watching this body and wondering whether it can handle real client work, a focused AF breakdown is exactly what you need before committing. Not for everyone, but for L-mount shooters already in the system, worth your lunch break.