I have tried following the instructions on the Expodisc website but it isn't working.It does work when I am trying to set it using natural light but as soon as I try to set a custom WB using my flash I continually get the "No Good" message regardless of where I point the camera to set it. I am photographing at a karate club this evening where there is very little natural light and the floor is covered in bright red and blue mats. I was eager to use the expodisc to avoid the color casts that I usually have to deal with when shooting at this venue but I just can't get it to work by following the instructions. Does anyone have any experience with this?
I am using a Nikon D7000 with a SB910 flash.
Added (1). I was given the Expodisc so can't return it, I just want to test it out and see if I like it, just having trouble getting it to work with the flash. I usually use a grey card.
См. статью: Need help setting white balance with expodisc using flash?