I've been keeping an eye out for a deal on one of these. Don't know how long it will last but the coupon code PSWBH15 will take $40 off the $99 price tag at B&H Photo. Davinci Resolve users will find it particularly useful. I'm hoping with enough testing and tweaking, I can come up with a custom LUT that will neutralize the GH4's unique color issues. http://www.bhphotovideo.com/c/product/651253-REG/X_Rite_MSCCPP_ColorChecker_Passport.html How to use it in Davinci Resolve to balance colors.