This arrived from London last week. Yes, a grey card. I think it'll be useful, although I also want a Spyder Cube, but that can wait.
Quite helpful in setting colour, and I'm also trying to use the 18% part as a base for doing manual exposure practice. Still use the camera's light metering though. I don't want to do guessing.
The other side is a Color Check 24 patch chart. Still can't get a gripe on this one. The only shop's guide only show how to use it with Photoshop or Lightroom, both I don't have. The Raw converter I use is Silkypix.
Thought of getting the new version, but ¥ 22.5k for something I only use for fun is quite a steep price.