The most apparent location to look for this issue is in areas of your scene that are or should be white. When taking a photograph by candlelight, the whites might seem yellow or orange. On a gloomy day or when you're in direct sunlight, the whites may seem blue. The color of the camera's display when you review your photos will also tell you whether or not your white balance is set correctly.
When you shoot under fluorescent lights, you must ensure that your camera's White Balance setting is set to Fluorescent. If it is not, the colors of any subjects that are supposed to be white will appear wrong on your photo.
Using white balance, your camera measures color temperature. If the camera believes the color temperature is the same as daylight but you are really using indoor lighting, the shot will frequently be overly warm. As a result, the shot will be yellowish. The opposite can also happen if the color temperature of your subject isn't consistent with the light in the room. For example, if the light in the room is blue and the color of your subject is red, then the photo will appear too blue.
There are two ways to correct for this problem: manually or with software. Manual correction requires you to measure the color temperature of the light coming from the lamp next to your subject and then use that value when setting the white balance. You can do this by placing a piece of paper under the lamp and taking a reading on the color spectrum analyzer screen on your camera. Note that measuring the color temperature of artificial lights is fairly difficult because they don't produce pure colors; instead, they tend to be more of a gray tone. However, it's still possible to estimate the color temperature by looking at other factors such as the shape of the light beam and the type of bulb used.
After you have measured the color temperature, you need to set it as your default white balance option. On most cameras, this is done via the main menu. Select White Balance and choose a method to select your default setting (Figure 3.12).
White Balance To grasp the notion of white balance, you must first grasp the concept of color temperature. What effect does light have on color? You've probably observed that certain images have an orange or yellow cast if shot with tungsten lighting, or a blueish cast if you don't alter the white balance. These are examples of color temperatures. Color temperatures fall into two categories: warm and cold. Warm colors like red, orange, and yellow appear more natural when exposed to light from incandescent bulbs as opposed to fluorescent lamps. On the other hand, cool colors such as green, blue, and violet look better after being exposed to daylight than under artificial light.
In photography, we usually want to control the color of our photos. This is usually done with the use of filters. There are several types of filters for different purposes. In this article, I'll discuss the basic types of filters and how they work.
Let's start with the most common type of filter: the color filter. A color filter consists of a stack of colored glass plates (red, green, and blue) that are held together by a metal frame. When you attach a color filter to your lens, only those wavelengths of light that pass through all three layers of glass will be allowed to reach your camera sensor. This means that only colors within the spectrum of red, green, and blue will be recorded by your image. Any other colors will be obscured by their presence in the filter stack.
White balance may have a considerable impact on the overall hues of a picture. If it is configured wrong, it might cause the image to appear either too chilly (more blue) or too warm (more orange). This is especially true for photos taken under fluorescent or incandescent light.
There are two ways to adjust the white balance in your camera: with the button on the side of the camera or from within the camera menu system. We will discuss both methods here.
With the Button On The Side Of The Camera
You can adjust the white balance with the button on the side of the camera. There are three options: Auto White Balance, Manual White Balance, and Scene Intelligent Auto (SI-Auto). Let's take a look at how they work.
Auto White Balance is the default setting. It will choose the best white balance option based on the lighting in the photo. Most times this will be fine; but if the scene is very bright with many different colors, it might choose a color other than what you want. For example, if the photo was taken in a red room and the auto white balance chose green, the image would then need to be corrected using Color Correction filters.
In Manual White Balance mode, you have complete control over the colors of the image.