What is fo­cus peak­ing?

Take ad­van­tage of ad­di­tional Live View fea­tures to take con­trol of man­ual fo­cus

Digital Camera World - - CAMERA COLLEGE -

Dig­i­tal cam­eras fea­ture a num­ber of man­ual fo­cus­ing aids that are de­signed to make it eas­ier to tell when the sub­ject is sharp. Al­though the abil­ity to mag­nify de­tails on the Live View dis­play is now com­mon­place, fo­cus peak­ing is the (rel­a­tively) new kid on the block. It’s a tool in­her­ited from video cam­eras and is now widely found on mir­ror­less cam­eras. A small hand­ful of DSLRs also list this func­tion as Fo­cus As­sist for Live View.

Fo­cus peak­ing works on the prin­ci­pal that the sharpest ar­eas have the high­est or peak con­trast, with the cam­era over­lay­ing a white or coloured high­light on the edges and tex­tures of ob­jects on the Live View image to in­di­cate this. The over­lay moves across the image in real time as you fo­cus back and forth, so you can quickly see which ar­eas are sharp. One of the ad­van­tages of us­ing a mir­ror­less cam­era with an elec­tronic viewfinder is that you don’t need to take your eye away from the eye­piece to look at the dis­play in or­der to use fo­cus peak­ing. Not only does this mean you can re­act faster, it also makes for more sta­ble shots when you shoot hand­held.

It’s not a fool­proof sys­tem. If you use a small aperture to de­liver an ex­ten­sive depth of field, for in­stance, then a larger amount of the scene may be picked out by fo­cus peak­ing, and it can be harder to judge pre­cisely where the sharpest point is.

Newspapers in English

Newspapers from Australia

© PressReader. All rights reserved.