Aper­ture and depth of field

NPhoto - - Nikopedia -

■ Depth of field – the zone that is ac­cept­ably sharp in an im­age – ex­tends in front of and be­hind the plane of sharp fo­cus, here shown in grey. Open­ing up the aper­ture nar­rows the zone; clos­ing (or ‘stop­ping down’) deep­ens it.

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