Lens
Lens. F-stop f1.4, f2, f2.8, f4, f5.6, f8, f11, f16, f22 How much light the lens lets in Smaller the number, brighter Fast lens/Slow lens. Lens. 2. Focal length 10mm, 50mm, 200mm Measure of magnifying power of a lens Smaller – wider/larger – more telephoto Wide-angle/Telephoto lens
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