When
· Teens
· · 2016
· · · September
· · · · 17 (1 entry)

Focal Length and Angle · If you care about cam­eras you prob­a­bly like learn­ing about in­ter­est­ing new (and old) lens­es. They’re de­scribed by two num­ber­s: How wide they open (al­so: aper­ture, bright­ness, speed), and how long they are (al­so: fo­cal length­). That first num­ber is gen­er­al­ly com­pa­ra­ble across lens­es: Low­er is bet­ter. The aper­ture unit, “F-stop”, is hard­ly in­tu­itive, but what­ev­er. Fo­cal lengths are hard to com­pare, be­cause how much the lens sees de­pends on how big the sen­sor be­hind it is, and there are lots of dif­fer­ent sen­sor sizes ...
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