Complex light source of the white balance policy

In normal light looks white color of something in a darker light looks like it might not be white and fluorescent lamp of "white" or "non-white". For all these things if you can adjust the White

In normal light looks white color of something in a darker light looks like it might not be white and fluorescent lamp of "white" or "non-white".

For all these things if you can adjust white balance, the resulting photo is correctly to "white" as a base to restore the other color.

General white balance mode, there are many different scenarios, such as auto white balance, tungsten light, white balance, indoor fluorescent white balance, white balance, manual tuning.

White balance adjustment of the consideration

In shooting (before), we have a lot of ways you can adjust the 「introduction white balance 」, for example, from cameras to specify a specific white balance mode, specify the custom white balance, color temperature, etc.

After the filming, the back-stage, we can then adjust the image further, commonly used in several ways: 1. Use to adjust the color balance: If you know the image is too blue, green, red, partial offset, yellowish ... and so inclined, you can use this method. 2. specify the color temperature to adjustment: for a single large block light source (for example natural light), use 「introduction Specifies color temperature 」 to tuneup is a fairly easy one. 3. specify gray point adjustment: for more complex light source (for example natural light + indoor specific light), you can use to specify 「introduction gray dots 」 way to adjust.

Gray dots

Gray point refers to the image in the midtones, usually the reflectivity is 18% of the area.

Gray dot specified sometimes of course depends on point of skills, so in some of the photographer's job, sometimes taking jobs before shooting a picture containing 「introduction Gray card "or" white card 」 images to use as the subsequent adjustment.

The following software for the specified gray dots of a browser.

Software application

1. in PS, you can curve tool, select the middle of the Eyedropper to select images midtones location for the calibration of the image.

As figure.

2. in the PI, can 「introduction Histogram 」 tool, select the Eyedropper to middle click on the left side of the image in the midtones location for the calibration of the image.

As figure.

3. in the NX is the white balance project, select 「introduction set gray dots 」, and then press the Start button, select the Eyedropper to midtones.

(You can select a single point or a region)

To NX as example 1. The camera automatically determine the color temperature.

The warm atmosphere, not belonging to us the desired results.