Nikon soft­ware

Ge­orge Cairns shows you how to fix per­spec­tive dis­tor­tion in Cap­ture NX-D

NPhoto - - Contents -

Fix per­spec­tive dis­tor­tion, tilted hori­zons and sen­sor spots in Cap­ture NX-D

Gen­er­ally, build­ings have ver­ti­cal walls. How­ever, if you shoot a tall build­ing from a low an­gle, per­haps be­cause you lack the space to move back far or there are too many peo­ple and dis­tract­ing el­e­ments block­ing the view if you do so, then its ver­ti­cal walls will con­verge to­wards the top of the frame. This per­spec­tive dis­tor­tion causes the walls to look as if they lean in­wards at the top, rather than run­ning parallel with the edge of the frame. Per­spec­tive dis­tor­tion can also oc­cur hor­i­zon­tally. In a long row of houses, the hor­i­zon­tal roofs and floors will ap­pear to con­verge as the houses re­cede to­wards the edge of the photo.

Per­spec­tive dis­tor­tion isn’t nec­es­sar­ily a prob­lem that must be fixed ev­ery time. Con­verg­ing ver­ti­cal lines can em­pha­sise the height of a tall build­ing such as a sky­scraper, for ex­am­ple. But soft­ware such as Light­room can au­to­mat­i­cally straighten tilted ver­ti­cal lines to make build­ings look more sta­ble. Cap­ture NX-D sadly lacks this auto cor­rec­tion fea­ture, but thanks to its Straighten and Per­spec­tive Con­trol panel, you can make ver­ti­cals look more ver­ti­cal and coun­ter­act tilted hori­zons, too.

As our start im­age also suf­fers from sen­sor spots, we’ll squeeze the Re­touch tool into this les­son as well. This is an in­valu­able way to fix these un­sightly blem­ishes caused by dust on the sen­sor. These can oc­cur in any shooting sce­nario, but may be es­pe­cially vis­i­ble in im­ages shot in bright, sunny con­di­tions, and in im­age ar­eas with even tones, such as plain walls, clear wa­ter and blue sky.

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