All gray, target "+" mark and white surfaces of this focus board have their own function. Front Panel: 18 degree gray, with focus ratio in the middle. This Focus Board has two sides, one is 18% gray, the other side is white.
eBay
Grey Card White Balance White Balance Card Set 3 in 1 18% Digital Photography Exposure Color Balance Card Set Gray/White/Black
Aliexpress UK
All gray, target "+" mark and white surfaces of this focus board have their own function. This Focus Board has two sides, one is 18% gray, the other side is white. Front Panel: 18 degree gray, with focus ratio in the middle.
eBay
18% Grey Card White Balance Card Balance Card 3 in 1 18% Digital Photography Exposure Color Balance Card Set Gray/White/Black
Aliexpress UK
An essential part in digital photography process for photographers or hobbyists. The grey side works for the exposure correction and white side for white balance setting. Wearable and washable, foldable and anti-deformation, Very durable.
eBay
Portable Grey Card White Balance Card 18% Exposure Photography Card Custom Calibration Camera Checker Video for Digital DSLR
Aliexpress UK
An essential part in digital photography process for photographers or hobbyists. The grey side works for the exposure correction and white side for white balance setting. Wearable and washable, foldable and anti-deformation, Very durable.
eBay
JJC White Balance Card 18% Neutral Grey Card Photography Color Correction Checker Camera Accessory for Canon Nikon Pentax
Aliexpress UK
Used for correcting colour balance and building profiles for photography and video work. good condition. no bag always kept in cardboard sleeve. Never left in direct sun light for any length of time.
eBay
Camera Color Correction White Balance Card Color Calibration Card Camera 18 Color Correction Charts for Digital Photography
Aliexpress UK
This set of Cards will produce high quality photographs by providing the precise photographic exposure. The grey card can balance all mixed lights to 18% neutral gray. Phone Accessories. Anti Scratch Waterproof cards.
eBay
JJC Profession White Balance Cards 18% Gray Grey Card Photography Color Correction Checker Camera Accessory for Canon Pentax
Aliexpress UK
This card is perfect for storing in your wallet or purse and is ideal for when Mid-size card is too large. This card is printed on a 760 Micron waterproof plastic material and features the standard 24 colour swatch on the front and on the reverse, the white, grey and black bands.
eBay
JJC White Balance Card with Bag 254 x 202mm Gray Card for Canon Nikon Sony Fujifilm Pentax Ricoh DSLR Photography Accessories
Aliexpress UK
Using the 24 Swatch Colour Card: The 24 Swatch Colour Card is ideal for white balancing and more detailed colour correcting. Start by composing your photograph including the 24 Swatch Colour Card, make the card part of the composition.
eBay
Grey White Balance Card 18% Exposure Photography Custom Calibration Camera Checker for DSLR and Film
Aliexpress UK