I have been on the fence about getting one of these since they came out. I have been useing a color chart forever, as I used to print my own color work. But I could never pull the trigger on the passport. Till last week. OMG! It makes 90% of your post color work a 2 click process.
People seem to only want to talk about it as a white ballence tool. But that is "only the tip of the iceberg". Sure you shoot it and can have a choice of several white ballences to select from. At times "right" is not correct, and correct is not "right" so now you have a very easy way to obtain a ballence that works. Thats all well and good......
BUT!!! It will also adjust your HSL. Specific to the camera and lighting. If your light is not ballenced it can influense your colors hue/saturation/liminence so not only will be WB be off but so will the colors charactoristics. Fixing it in one click is HUGE!!! The final image, you may not want with a neutral ballence, but it is a lot easier to get to what you want from neutral than it is from way to one side.
You will need to shoot a referance frame at eash set up. But most people chimp one or two anyway, so it is not really a big deal.
This is definatley something I wish I had picked up a long time ago. It is instantly a fixture in my bag.



