Using this lens on a Panasonic GH4 4K is absolutely worth every penny. Some people complain that it's too expensive. But I've shot a lot with Red and Zeiss lenses, C300s with Canon Cinema lenses and these Nokton lenses on the Panasonic GH4 are just as good if not better. I would lean towards the best. And that in 8-bit 4K. So I know all other cameras with big price tags would be blown up if I shot 10-bit 4K. In comparison, it is still a lot cheaper than Canon cinema lenses, Ziess or other PL mount lenses. Clarity is very good, very durable lens. I am very happy with this lens and the Nokton lenses so I don't need to buy PL mount lenses. Definitely worth it.