I’d like to share with you my test for the GH5s. The primary focus was to test how would the camera produce colors with just ambient light. The secondary was to test the autofocus in challenging conditions. The clips were taking around 25m in bad visibility and with a lot of particles. Thirdly, I wanted to test the low light performance. The amount of light in summer at 25m in our seas is relatively dim. And it presented a good test for the light sensitivity of the camera which I sat to variable with a maximum of iso 6400. This is a result of two dives on the same day. My rig still needs balancing.
I am quite pleased with the camera ability to produce such good color rendition when white balanced on a gray card with a red filter. My gray gloves which are a shade darker than the 10% gray card produced more pleasing colors and needed little or no color grading in post beside exposure adjustment.
The autofocus, despite the challenging conditions with bad visibility and numerous particles, was really good and definitely much more better than my aging eyes it is fair to say that it can do the job more than 90% of the times.
The low light performance was good which resulted in better exposure, color production and autofocus.
I know many would prefer the GH5 over the GH5s due to the lack of IBIS. Honestly, I have not tried IBIS underwater and I have read mixed reviews. However, the color rendition of this camera in ambient light is beyond the capability of the GH5 and overweighs the IBIS in my opinion.
Nuaticam housing with 7” dome,
Dive and See 5.5 monitor,
Panasonic 12-35mm 2.8 version ii,
Standard picture profile,
Variable ISO with maximum 6400