Lens and Focus Choices
Focal Length
Telephoto (Long) >100mm
Wide Angle (Wide) <24mm
Standard - 24mm - 50mm
Techniques
Zoom Lens
Dolly Zoom
Selective Focus - Shallow or Deep Depth of Field
Rack Focus
Choosing a lens
In Depth - Depth of Field
Short Version - Depth of Field Explained
Long Version - Depth of Field Explained