3in1 Gray/White/Black Card Set Photography Exposure Balance Strap
The advantage of this product is that it can adjust in Bright or Dark environments.
By recording the light reflected which is used a Photometer to get the precise exposure value on the Grey Card.
These cards which are anti scratch waterproof.
Approximate size: 8.5 x 5.4cm.
About how to use:
First, use you camera to shoot the gray card which can fill in the whole screen, then you can text the light.
Second, put the white balance of the camera into the custom size,in addition, you should choose the right gray card which you have shot before.
Thirdly, you could take a photo after you have chosen,at the time,you should try your best to make the photo which you have shot in order to return to its own color.
1 x 3in1 Photography Exposure Balance Cards
you can track your packages after an order has shipped.