ThAT ex­po­sure trian gle

There’s more than one way to ex­pose an im­age cor­rectly – it all de­pends on want you want from your fi­nal photo

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■ The beauty of choos­ing the ex­po­sure is that it’s all down to just three set­tings: aper­ture, shut­ter speed and sen­si­tiv­ity (ISO in other words). The com­plex­ity, and what makes it in­ter­est­ing, comes from the other ef­fects that each of th­ese has on the im­age.

The ISO set­ting con­trib­utes no pos­i­tive qual­i­ties to the fi­nal im­age, it sim­ply needs to be as low as pos­si­ble to avoid noise. How­ever, aper­ture and shut­ter speed are elec­tive; whether it’s se­lec­tive or deep fo­cus, frozen move­ment or slo-mo streak­ing, we need to fac­tor th­ese into the fi­nal choice of set­tings. Aper­ture-pri­or­ity, shut­ter-pri­or­ity and pro­gram modes are Nikon’s way of help­ing you to de­cide.

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