Anwenk Grey White Balance Card 18% Exposure Photography Custom Calibration Camera Checker for DSLR and Film

Just about exactly as you would expect. Easy to use, easy to carry (wallet, lanyard, other), and it seems durable enough. I think it was worth it to have, especially convenient for wedding days.

Good and affordable.

fits in my bag and is super handy for 18% grey light reading

White Balance -- very important if you want to have your colors reproduced correctly when you take digital photographs. It is truly amazing how many times the digital camera gets white balance totally wrong and your colors look weird when you review the pictures at a later date. My example is snow on a cloudy day -- digital cameras see blue, not white.I shoot photos in RAW format and do all my final JPEG processing (post processing) on a computer. The very first thing I do is set white balance. The second thing I do is exposure correction. Here is where these cards come into play.* White card -- to set white balance for the scene you are shooting.* Place the white card into the scene and take a picture, than take the card out and reshoot the keeper picture* In post processing, use the eyedropper tool to click on the white card and see the difference* Make note of the color temperature and use that number for subsequent photos taken in the same light* Gray card -- what is known as an 18% gray card -- half way between black and white* This color is what the camera strives for in exposure setting -- making everything fit 18% gray* You use this card in a scene to set your exposure properly -- converting your camera meter to an incident light meter* No need to photo the gray card, but you have to set your exposure using this card prior to taking the picture - exposure lock featureI have never used the black card.The color accuracy of these cards is good. They are small enough to keep in your shirt pocket and use in the field. They are made of plastic and clean easy.If you are having problems with reproducing accurate colors from your digital camera, these cards will help tremendously once you get the hang of their use. It makes color correction and exposure values as close to spot on as you can get.

Gray card to check white balance in photography. Highly recommend

Great and practical card - unfortunately the neutral grey is off a little and not completely grey, compared to Kodak grey-cards which you can click in photoshop for a proper white-balance, these have a bit of a tone to the face when used the same way

This works great for taking my artwork photos and getting the right white balance.

This was exactly what I needed for my astro modified camera to be able to use the camera for normal pictures without the need for any filters. I guess these can be used on normal cameras too ;) In my case though, auto white balance does not work on an astro modified (infrared) cameras, so I would need a visible bandpass filter to fit every lens that I have, or simply set my white balance using this grey card! This Grey Card was way cheaper and a lot less to carry!