Good Test Charts. I'm a professional Photographer. Perfect for setting up my Dual Monitors that use to take several attempts and Hrs. Now I can do perfect set-up in 5-10 min... (not easy when dealing with LED Monitors that do not always give you 100% of the color spectrum). Now what I see is what I get.

I haven't tested it yet on my camera scopes, but out of the box I like that there are two, and each has a little protective piece of cardboard.
I would have liked to have each of them in their own folding protective cover. Like a birthday card or something stiff and resilient that holds the DGK inside and lets me pack it away without worry that the individual tiles (they are glued onto the paper sheet) wouldn't get scratched or scraped off.

I so much wanted a bigger version, but to get something that's just 9x11 costs $70. And that's just too much when you can get color accurate tiles at this price. I would pay a couple times more for a big version- like 11x17. Because I need it in a live camera situation and there is no "post" to crop in to the image and run calibration. It happens on the set, across multipel cameras, so something tiny means they have to all be very close and right next to each other. Something bigger would help tremendously.

Color card have red streak straight thru white color on card . Cards an no good at all if thier is a red streak across the white with red on. It the cameras can white balance an properly. Useless now. Very dissatisfied

small enough to put in camera bag, plasticized feel which should be durable.

I'll recommend you to buy x-rite color checker.