fo­cal points

NPhoto - - Special Feature -

54

AF-S vs AF-C

For sin­gle-shot pho­tog­ra­phy, use the AF-S mode – the cam­era’s shut­ter won’t re­lease un­til it’s achieved fo­cus. For con­tin­u­ous shoot­ing, use AF-C mode – the cam­era will keep re­fo­cus­ing while you’re shoot­ing. Not all the shots will be sharp, but it will keep fir­ing any­way.

55 Fo­cus first or fire any­way?

On more ad­vanced Nikons you can use Cus­tom Set­tings to change the Fo­cus Re­lease Pri­or­ity. In sin­gle-shot AF-S mode, for ex­am­ple, you can en­sure it fires the mo­ment you press the but­ton, whether it’s fo­cused or not.

56 Fo­cus with your thumb!

Ac­tion pho­tog­ra­phers swear by the AF-On ‘back-but­ton’ fo­cus­ing op­tion on pro-level Nikons as it en­ables them to sep­a­rate fo­cus­ing and shoot­ing. If your cam­era doesn’t have an AF-On but­ton, you can con­fig­ure the AE-L/AF-L but­ton for back-but­ton fo­cus­ing.

57 Dy­namic Area AF ex­plained

This mode is de­signed for track­ing fast-mov­ing sub­jects us­ing a clus­ter of fo­cus­ing points around the one you’ve cho­sen. Th­ese ex­tra fo­cus points are there to cover sud­den er­ratic move­ments, and it’s still im­por­tant to keep the sub­ject un­der your cho­sen AF point.

58 Dy­namic Area vs 3D Track­ing

Nikon D-SLRs have a wide ar­ray of fo­cus modes for fol­low­ing a mov­ing sub­ject. Use Dy­namic Area AF if you’re fol­low­ing the move­ment with the cam­era, and the 3D track­ing op­tion if the cam­era is static and your sub­ject is mov­ing around the frame.

59 How­many AF points?

Dy­namic Area AF lets you a choose the num­ber of fo­cus points used. A smaller num­ber will make the AF more re­spon­sive, but you will have to follow the sub­ject closely. If its move­ment is er­ratic, a larger num­ber of AF points will help.

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