Practical exercise
Introduction to Aperture Priority (A/Av) mode: try it yourself

1. Depth Control
Photograph a row of objects (spoons, books); use Av to control how many are sharp.
2. Low-Light Av
In dim room, set f/3.5; watch how shutter speed auto-adjusts.
3. Blur Background
Shoot a subject near a window with Av wide open (e.g., f/2.8).
4. Landscape Sharpness
Use Av at f/11 to get foreground and background sharp.
5. Shutter Warning
In Av, watch if shutter drops below 1/60s; learn when to raise ISO.
