Why do the photos taken by D40 SLR look bluish?

The reason why the photo is bluish is because of the "WB" white balance, which is also the reason for the color temperature control. The machine's automatic detection is sometimes inaccurate, and this will happen. If "WB" is always in "AUTO", It is easy to cause this, and it will be improved if it is adjusted to specific conditions such as incandescent lamps/fluorescent lamps/daylight

etc.

Principle

The English name of white balance is White

Balance. The color of objects will change due to the color of the projected light, and photos taken under different lighting conditions will have different color temperatures. For example, photos taken in an environment illuminated by tungsten lamps (light bulbs) may appear yellowish. Generally speaking, CCDs cannot automatically correct for light changes like the human eye.

The picture uses natural light. After imposing white balance, the image becomes bluish. If you use white balance under light, the color tone of the picture will return to the original color. The white balance will immediately adjust the intensity of the red, green, and blue colors of the entire image according to the image characteristics of the current picture to correct errors caused by external light.

Camera Principle

The range of D40 automatic white balance is about

around 3000-7000

Auto: When the color temperature of the light source changes, The camera automatically adjusts the white balance. This mode works well for shooting in daylight, but it struggles a bit when color temperature changes too much.

Daylight: Color temperature setting is close to 5500K. Suitable for daylight photography outside of early rainy weather.

Cloudy: The color temperature is set at around 6000K. Suitable for shooting on rainy days, it can eliminate the unwanted blue tint in such weather.

Tungsten lighting: Color temperature is set at approximately 3200K. Suitable for indoor and outdoor shooting under tungsten lighting.

Sometimes the blue sky is above 7000k, and the automatic white balance cannot be turned on automatically. Yellowish

Sometimes the indoor complex light, which is lower than 3000 or more complex, is bluish, which is normal.

The solution is to use RAW mode and adjust the color temperature later. The adjustment space is very large without damaging the image quality!

As for some things with great contrast, they are all post-processed in RAW and then synthesized in PS.

You can control the color as you wish

For example, this is how my picture came out

/photo/234132