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Panasonic GH5S 4K / 240fps low light monster


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the extra $500 is the "you know you fuckin want it" tax.

Just saw the asking price. m4/3 isn't what it used to be.

Not saying DPAF specifically, but a hybrid system with PADF like what Fuji, Sony, Olympus, and Nikon1 use - you know the rest of the camera industry. I've seen people say similar things to "the

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20 minutes ago, EthanAlexander said:

This isn't true. You aren't accounting for the light advantage already at play with larger sensors. So, when you stop down two stops to get the same DoF, you're ok because FF has a two stop sensitivity advantage over M34.

Depending on sensor tech, lol!

At same exposure levels and in lowlight situation GH5S video shows same noise performance as A7SII at ISO 6400. Above 12800 ISO A7S is better, at 51200 it´s eating it for breakfast of course. But ISO6400 quality like an A7s, thats awesome lowlight performance! You can watch the video on youtube, which is comparing the GH5s with the sony, the EVA1 and with the original GH5.

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28 minutes ago, horshack said:

Be careful when evaluating the GH5s vs A7sII low-light performance videos - look at both noise *and* detail, and look for scenes with movement rather than just locked-down static shots. Noise reduction can lead to false conclusions of sensor performance.

There are some lowlight scenarios where the A7s codec will show nasty artefacts, where the GH5s, even the GH5 will not. But interested in any findings about ISO 6400 footage.

By the way, Kai is lacking a bit in competence regarding video compared to experts such as Luke Neumann or Jordan from TCS. I think evaluation of advantages does barely come across in his video. Here is a screeshot comparing GH5s to the original GH5, 6400 ISO, 12lux!, f2.8, shutter 25th second, massive improvement, shooting at 6400ISO will be not a problem with this camera. Just click on preview below:

1648-Low_Light_gh5vsgh5s-Low_light_GH5_v

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24 minutes ago, RobertoSF said:

The GH5s can shoot multiple aspect ratios, namely the anamorphic friendly 4:3. And, apparently, the anamorphic video mode lets users record “squeezed” footage, then desqueezes it in the display, so the footage can be viewed in a more cinemascope-like aspect ratio.

This was a feature on the GH5 as well. What would be cool is if it could preview and desqueeze the actual file.

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2 hours ago, Inazuma said:

The ProAV video shows the GH5s being competitive with the A7S ii but the dpreview one shows the GH5s having very bad colour shifting https://***URL removed***/reviews/panasonic-lumix-dc-gh5s-first-impressions-review/4

I note better performance of GH5s at f5.6, 12800iso, rec709. Look at the massive artefacts, blocking on the A7s. Gruesome. So in some lowlight scenarios, one will fare better with the GH5s. Open in new tab for enlargement.

 

 

gh5s_a7s_12800iso.PNG

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4 minutes ago, PannySVHS said:

I note better performance of GH5s at f5.6, 12800iso, rec709. Look at the massive artefacts, blocking on the A7s. Gruesome. So in some lowlight scenarios, one will fare better with the GH5s. Click for enlargement.

 

 

gh5s_a7s_12800iso.PNG

Yes compression blocking but in terms of the overall image, the GH5s is showing loads of false colour; moreso evident in the video than in the still.

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10 minutes ago, Inazuma said:

Yes compression blocking but in terms of the overall image, the GH5s is showing loads of false colour; moreso evident in the video than in the still.

Muaha, lol. That compression blocking is massive, it´s like old 256 VGA color mode from 1998, muaha! Some tint easily corrected with a color wheel in the software of your choice. No cure for the A7s image on this 12800ISO sample. So up to 12800iso, comparable performance, even much  better on the gh5s in this scene.

But let´s read what master Ebrahim has to say about this, giving his supreme analysis on the dp forum very soon! :)

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2 hours ago, PannySVHS said:

There are some lowlight scenarios where the A7s codec will show nasty artefacts, where the GH5s, even the GH5 will not. But interested in any findings about ISO 6400 footage.

By the way, Kai is lacking a bit in competence regarding video compared to experts such as Luke Neumann or Jordan from TCS. I think evaluation of advantages does barely come across in his video. Here is a screeshot comparing GH5s to the original GH5, 6400 ISO, 12lux!, f2.8, shutter 25th second, massive improvement, shooting at 6400ISO will be not a problem with this camera. Just click on preview below:

1648-Low_Light_gh5vsgh5s-Low_light_GH5_v

No doubt the A7s's codec is inferior but I was only speaking to sensor performance - the codec can be worked around via external recording. Is the GH5 vs GH5s screenshot you posted a static locked-down shot? If so then the difference can explained via 3D (temporal) noise reduction.

Panasonic can't replace the laws of physics. The A7s sensor has a Quantum Efficiency of 65% and a sub 1e- read noise - that's pretty much near the theoretical limit of current bayer sensor design. If the GH5s matched that then it would still be 2EV below the A7s in noise performance based on the difference of sensor area.

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1 hour ago, PannySVHS said:

Muaha, lol. That compression blocking is massive, it´s like old 256 VGA color mode from 1998, muaha! Some tint easily corrected with a color wheel in the software of your choice. No cure for the A7s image on this 12800ISO sample. So up to 12800iso, comparable performance, even much  better on the gh5s in this scene.

But let´s read what master Ebrahim has to say about this, giving his supreme analysis on the dp forum very soon! :)

The compression blocking to my eyes is not nearly as obvious as the false colour in the GH5s image.  By false colour, I mean how inaccurate the colour is to begin with, as well as how it so readily shifts between different hues on not only the jacket and walls, but more importantly, the skin. The classic blotchy skin problem of Panasonic images. This is something that can't be corrected with a simple colour wheel shift. 

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