A] White Bal­ance

NPhoto - - Special Feature -

If the colours in a pic­ture look squiffy, the chances are that it’s down to an in­cor­rect White Bal­ance. This is an ad­justable set­ting that is de­signed to help you get the cor­rect colour bal­ance – in­clud­ing clean, cast-free whites – un­der a wide range of light­ing con­di­tions.

Light sources have a colour tem­per­a­ture that’s mea­sured us­ing the Kelvin scale, with light that is made up of pre­dom­i­nantly or­ange and red be­ing com­monly re­ferred to as ‘warm’, and light that is made up of blue known as ‘cool’. In the Auto White Bal­ance set­ting, your cam­era works out what Kelvin value to set. It usu­ally gives de­cent re­sults in clear, ‘mid­day’ light, but can some­times strug­gle in more ex­treme con­di­tions and un­der ar­ti­fi­cial light­ing. This is why there are a num­ber of White Bal­ance pre­sets to choose from when you shoot in P, S, A and M modes; sim­ply se­lect the op­tion that most closely matches the con­di­tions you’re shoot­ing in. You can also fine-tune the White Bal­ance set­tings in the Shoot­ing Menu to make re­sult­ing images ap­pear warmer or cooler.

For the most ac­cu­rate set­ting, you can cre­ate a cus­tom White Bal­ance by tak­ing a pic­ture of a white ob­ject in the same light­ing con­di­tions, which the cam­era will use as a guide to cre­ate a new pre­set. To be sure of com­ing back with a us­able im­age, you can also use White Bal­ance Brack­et­ing, al­though this only works with JPEGs.

Shade WB When shoot­ing dur­ing the ‘golden hour’, Auto White Bal­ance will try to cor­rect what it per­ceives as an or­ange colour cast (which is what you want!), and the re­sult can be rather wishy-washy. To give ad­di­tional warmth to the scene, ‘trick’ the cam­era by man­u­ally set­ting a White Bal­ance pre­set with a higher Kelvin value, such as Cloudy or Shade

Auto WB

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