PHO-2022 Lecture Notes - Lecture 1: Autofocus
Document Summary
Full aperture stops: f1,4 f2 f2,8 f4 f5,6 f8 f11 f16 f22 f32. 1 sec - - 1/8 1/15 1/30 1/60 1/125 1/250 1/500 1/1000 1/2000. A correct exposure exposes for 18% gray. Meter readings are an average of light. More focusing points are needed in the frame for motion photography or when photographing on the edges of the frame. Af-c (auto-focus continuous), af-s (auto-focus single), m (manual focus) Lens factor- a sensor smaller than full frame makes the photo have a cropped effect. Full-frame sensors are ideal for most, standard forms of photography. Fps- frames per second; smaller sensor cameras can shoot faster. Zoom lenses- have compromises in distortion and sharpness. Common prime lenses include 21mm, 18mm, 14mm, 12mm. Common zoom lenses include 10-18mm, 12-24mm, 14-24mm, 16-35mm. Common prime lenses include 135mm, 105mm, 100mm, 90mm, 85mm, 75mm. Common zoom lenses include 70-300mm, 70-200mm, 80-400mm, 100-300/400mm. Macro lenses (90-105mm) are good for food & product photography.
