ExpoDisc v3 Professional White Balance Filter

No easy with a flash on camera

Because we must place the camera where the subject is, that’s not easy if you want to shoot with a flash on camera

Most accurate white balance device I've used.

I've used white and grey cards for years. I do mostly photography but also some video, sometimes in locations with horrible lighting (crazy magenta shifts from old lights etc) that easily confuses the auto white balance on many camera systems. When one of my white balance cards was starting to look a bit haggard, I decided to replace it the ExpoDisc. I would not say the difference was huge compared to white cards I've used in the past but the ExpoDisc gets me within 100 Kelvin of where I want my pictures/video to be. 100 Kelvin....We're splitting hairs here. I've shot in some venues dozens of times and I can compare RAW files I've taken in the past, calibrated with white cards and compare them to the files I've calibrated my white balance with the ExpoDisc and the white balance on the Expodisc is simply closer to what I view as a true white balance. The white cards I've used in the past were off by anywhere from 100 to 300 Kelvin and sometimes had mild magenta/green shifts. I highly recommend this product if you are looking for a truly accurate white balance tool.