The specifications posted on the Panasonic UK site do mention the resolutions for the 6K Photo mode:
https://www.panasonic.com/uk/consum...ix-g-compact-system-cameras/dc-gh5.specs.html
I suppose if you were to shoot with 1.33X anamorphic lenses in the 4:3 aspect ratio in 6K PHOTO mode, then after desqueezing the footage you could end up with an output resolution of 6656 x 3744. Which is a 16:9 aspect ratio frame of a bit more than 6K even. Although I'm not sure this is what Panasonic's marketing department had in mind.
One other thing to note about the above list, is that in the 4:3 and 3:2 aspect ratios, the 4K PHOTO modes don't really result in frames that are close to 4000+ pixels across either. And the output frame sizes of the 6K PHOTO mode are about 1.5x those of the 4K PHOTO mode. So perhaps there is some semblance of internal consistency in the naming for whatever that is worth.
https://www.panasonic.com/uk/consum...ix-g-compact-system-cameras/dc-gh5.specs.html
- 4:3 5184x3888(L) / 3712x2784(M) / 2624x1968(S) / 4992x3744(6K PHOTO) / 3328x2496(4K PHOTO)
- 3:2 5184x3456(L) / 3712x2480(M) / 2624x1752(S) / 5184x3456(6K PHOTO) / 3504x2336(4K PHOTO)
- 16:9 5184x2920(L) / 3840x2160(M) / 1920x1080(S) / 3840x2160(4K PHOTO)
- 1:1 3888x3888(L) / 2784x2784(M) / 1968x1968(S) / 2880x2880(4K PHOTO)
I suppose if you were to shoot with 1.33X anamorphic lenses in the 4:3 aspect ratio in 6K PHOTO mode, then after desqueezing the footage you could end up with an output resolution of 6656 x 3744. Which is a 16:9 aspect ratio frame of a bit more than 6K even. Although I'm not sure this is what Panasonic's marketing department had in mind.
One other thing to note about the above list, is that in the 4:3 and 3:2 aspect ratios, the 4K PHOTO modes don't really result in frames that are close to 4000+ pixels across either. And the output frame sizes of the 6K PHOTO mode are about 1.5x those of the 4K PHOTO mode. So perhaps there is some semblance of internal consistency in the naming for whatever that is worth.