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 The white balance cap is very easy to use. This is how to perform white balancing.
- Fasten cap on your lens.
- Aim for what you intend to shoot.
- Set the camera to manual focus.
- White balance according to the camera's manual.
- Remove the cap from the lens.
Now white balancing is performed and You are raedy to photograph.
Easy to take with you
The white balance cap is very easy to use, easy to take with you and has a nice design. With the white balance cap, you can quickly and easily perform white balancing. Saves lots of time that would otherwise have to be spent on finishing of your images.
Works like a regular lens cap
Unlike other caps, this has a very good grip and can therefore be put in place even if it is a lens hood on the lens. It is perfectly possible to use this cover as a normal lens cap. You get good protection to your lens into the bargain. You do not have look for an extra white balance cap because it is now already one on the lens.
Why white balance ?
When the camera captures an image on the sensor, it tries to determine the color temperature of the incoming light. This is done for the color reproduction to be as good as possible. The idea is that white should be white and not blue or yellow.
This is not something specific to digital cameras. If you load a color film in your analog camera, you select the white balance as you select a film for daylight or indoor lighting. All films have an optimum color temperature at which the colors reproduce best. You can not change the analog camera in any other way than by changing the film or put on a filter over the lens.
Digital cameras are able to adjust white balance and adjust to the current lighting conditions. This can be done automatically, using default settings or with a manual white balance. Automatic white balance often works well, but under conditions of mixed light, eg light bulbs, fluorescent lighting and sunlight, the automatic setting may often struggle to adjust the color temperature correctly. A white balance cap will help you to very easily perform the manual white balancing before you take your pictures.
Panoramic Images
If you want to assemble multiple images, it is important that both exposure and color temperature are correct. If we play with the idea that the pictures below would be added together to create a panorama, it would not be seamless. Note that both images have identical exposure time and aperture. To be able to fit the images together we must also white balance them exactly the same.
Sample Image
The images below are taken with the same exposure time and aperture, only difference is that the right image has been adjusted the white balance using a white balance cap and the left image has had the camera white balance set to auto.
The lighting is a mixture of fluorescent tubes, bulbs and even natural light coming in from a window on the right.
The white balance caps are available in the most common sizes 52, 58, 62, 67, 72 and 77 mm.
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