Grey Cards
The use of a grey card is a valuable and affordable solution for perfect colour reproduction and white balance in your photos.
B.I.G. Plastic Graycard Set 10x12.5cm
List price 17.95
16.-
Novoflex ZEBRA grey card 15x20cm
List price 16.90
15.-
Bresser TR-15 30cm round gray card / screen
12.-
Photo Galerie Reflector and Gray card 30cm (non-foldable) (Munjas)
List price 24.90
11.-
B.I.G. Gray card set 2pcs. (2x 10x12cm)
List price 11.95
10.-
Bresser BR-GRC2 56cm round grey card/screen
16. 99
Calibrite ColorChecker Grey Balance
57. 99
Helios Foldable Graycard 30cm with scale
List price 34.95
26.-
StudioKing Digital Gray Card SKGC-31S
List price 12.95
12.-
Calibrite ColorChecker Gray Balance Mini
55. 99
Caruba 3 in 1 Foldable Grey Card 30cm
List price 59.95
42.-
Falcon Eyes Grey Cards 1x A5, 1x 10x15
18. 95
What is a grey card?
A grey card is made of cardboard or plastic and can be used to adjust the colour reproduction of a photo. This is necessary for limiting the influence of a light source on the colours and white balance and thus creates a correct colour image for the camera. The card is 18% light grey, bearing in mind that 0% is white and 100% is black. A good photo is calibrated to this value of 18%, so that a grey colour falls over the photo. By bringing the grey card into the visible light of the image, the camera can determine the correct settings.
Adjusting the white balance
When you take a photo with the grey card in the image of the camera, you can determine the correct white balance for the photo. It is important that the card is in the same lighting as the photo subject and that no shadows fall over the card. Focus completely on the grey card to set the white balance. The next step differs by camera, but in the settings you will often find an option to manually set the white balance. You must select the photo you've just taken with grey card as the reference photo. The next pictures will use the adjusted white balance.
Functional lighting
In addition to determining the white balance, the use of a grey card is also effective in determining the correct exposure. The principle works the same as when setting the white balance, but for exposure it is necessary that the value is set to 0. The exposure can be found in the camera settings. In manual mode, you can work towards 0 by changing the aperture or shutter speed. In automatic mode, the camera calculates the values itself.