In reply to HeMa:
> As I'm still using GH4, I mainly use 64GB cards (they tend to be cheaper) and I carry a bunch with me.
I loved my GH4, which I had for three years till I, inadvertently, tested its weather sealing to destruction during storm Ciara. At the time I bought my GH4, the new model was only a couple of months away from hitting the shops.
When the GH5 was released, I happened to be in a Jessops and a Panasonic GH5 Rep was ploughing a furrow in their carpet singing the praises of the new camera. His honest advice to me was, don't bother upgrading as there aren't that many killer features between the cameras. I thought that was jolly nice of him to be so honest.
Now that I have one, with quite a few firmware updates under its belt, I can happily say that I feel that the upgrade is justified. The Wave Form alone, is far superior that the Histogram when setting the exposure. Add the Wave Form and Zebras together and you have no excuses to over or under expose your subject.
I know that image quality is subjective, however I actually do believe that the image quality is better as well. Just by looking at footage with my 100-400 lens, as a common factor, the results are sharper. This may have something to do with a higher bit rate and bigger sensor or it could be psychological and all in the eye of the beholder.
I have some Lexar 64Gb cards with a continuous write speed of 95Mb/s. I shoot at H265 and 150mbps. So far I have only had one fail where the camera said that the card was not fast enough to keep up. Admittedly it was a very busy situation with contrasting light and fast moving subjects.
I know that my camera can shoot 400mbps however checking Youtube, you could not tell the difference between the bit rates when watching on Youtube. I also get to save a shed load of money not buying bigger storage cards as well.
Also another major bonus id the IBIS of the camera as well as the lens. I practically don't need to use my gimbal any more, because its that good. Its awesome. If you look at the quick test clip I made, then the first minute is shot on a tripod. The second minute, with the swans was taken at 100mm zoom, and hand held. Hand Held.
Almost forgot, it takes great photos.
Post edited at 16:38