The White Balance Card Set from Vello provides an 18% gray card along with white and black reference cards. With your digital camera, the gray card helps you to determine accurate exposures, the white card achieves the optimal color balance under any lighting situation, and the black card can be used as a reference point when editing your images in a post-production software. Also, the included lanyard helps to manage your cards while using them.

Card Size: 5.1 x 3.9"    Achieves Optimal Color Balance    Accurately Exposed Images    White, Black, and 18% Gray Balance Cards    Black and White Points for Post-Editing    Includes Lanyard    Use with Any Digital Camera

Related Questions and Answers

Q: 1. My canon xti 400D says to use a sheet of white paper. Will this enhance my white balance even more or throw it off since it's gray?

A: The grey card is superior to using a sheet of white paper since there are so many types of paper. The grey card is calibrated. The one which was illustrated is the one I use and Ithink it is a good one. I have come across at least one which was off. SL

Q: 2. size?

A: Small is 3.25 x 2 , Medium is 5.1 x 3.9 , Large is 10 x 7.9 . Ref mfg website

Q: 3. Is the back of the card blank empty or there is some wording on it? The pocket size seems to have something on it which is rather annoying as im looking for an empty rear side card to manually adjust the WB on camera itself than post process. Thanks

A: I've used the front for manual white balance, it works well. (Depending on your camera)But no, the back has a bunch of info, branding, a light spectrum guide, ect. Actually, I just looked at it closely, and the back is a different color. It appears the certified grey side is actually adhered to a sturdy light grey plastic layer.

Q: 4. What are the dimensions of these cards?

A: The small Dimensions (L x W) 3.3 x 2.1" Medium Dimensions (L x W) 5.1 x 3.9" and Large Dimensions (L x W) 9.9 x 7.9"

Q: 5. What material are these made from/with? I want to use a plastic card for underwater photo/video. Thank you

A: The cards are made of waterproof PVC plastic

Q: 6. What is the luminosity L value of the g7 card ?

A: The MFR does not list such a value.

Q: 7. Is this card appropriate for manually adjusting white balance in camera?

A: Yes, it is designed for that. I use it that way and it works perfectly.

Q: 8. what are they made of?

A: All plastic construction, not cardboard.

Q: 9. Does this fit in the credit card slot of a wallet?

A: Yes, it is made to the size of a credit card, so if a credit card fits then this will fit as well.

Q: 10. What should the technical correct middle gray IRE value be on the waveform for Rec709?

A: The best IRE value to set for the middle gray card of the Vello White Balance Card Set (Medium) (B&H# VEWBCMII) will vary by your camera and chosen camera settings. As such, you will want to try out the settings until you find the one that works best for your needs. However, many people prefer to shoot around 40 when using a log format and a bit below 50 when shooting with linear exposure.