DGK Color Tools DGK-XL Plus Extra Large Size 4 Card White Balance 18% Gray Warm Card with Carry Lanyard

For the price, I could not have found a better product. It is sturdy enough to put in my bag and resilient enough to get wet. I have no use for the blue card, but the black, white and grey have become staples in my photoshoots. I can't say how accurate the cards are, but they have been fine for my use in portraiture and head shots. For something this inexpensive, I would definitely recommend it as a piece of kit to just throw in every bag.

Nice quality and a good price. The chart that came with it is quite handy, but would be better if printed on the backs of the cards.

The grey is definitely off.

I keep these in my camera bag, and they are compact enough not to be a nuisance. I've found that the black/grey/white cards still result in photos on my Nikon D5200 (and Nikon D60) that are slightly too "cold". So when I use these, I tend to fan all the cards out during white balancing, such that the blue card is also showing, and that helps me "warm up" the white balance enough so people don't look frozen. :-P

Was able to set my white balance with no problems with these cards. A definite plus when trying to photograph difficult subjects like coins. However, the cards have a slight reflective quality to them. Didn't appear to affect the camera in setting white balance.

It is hard to go wrong with these for the price. The cards are large and the colors/tones are calibrated. ALWAYS custom balance your white point and you will get better pictures.

In the old days we used cardboard neutral grey cards, which tended to get soiled and worn out quickly. The DGK cards seem to be very durable and are cleanable. I discarded the strap and use a small split ring the hold them together; even more compact.

Absolutely loved it. My friend uses it almost every day. It would be nice if a focus chart was printed on the back of one of these cards.