Panasonic GH6

Using the High Frame Rate (HFR) options, you can shoot Full HD at up to 240p with audio

No, the two card types have pretty different form factors and SD cards can only be used in the SD slot, CFexpress Type B in the CFexpress Type B slot. If you want to have two cards in the camera for backups, you'll need to have a CFexpress Type B card.

The GH6 (and R5 C) has 14-bit stills recording, but video recording at 10-bit. I think the point you might be getting at is that Canon offers the HEIF format in their R5 cameras, which is a compressed format capable of 10-bit color, whereas JPEGs only support 8-bit color. Both cameras' raw file formats are 14-bit, though.

Panasonic claims the GH5S will still have a slight edge in terms of low-light performance, but it's a marginal difference in practice between the two. The GH6's improved processing helps make up for the increased resolution and sensor difference, while the GH5S has the large pixel dimension and lower res that make it inherently good in low-light.

The GH6 uses a standard Micro Four Thirds sensor, like the GH5 II and GH5, it does not have the multi aspect ratio sensor from the GH5S or BGH1. The crop factor is commonly noted as being 2x, but this varies a bit depending on the aspect ratio in which you're recording.

Contrast-detection AF seems to be a technology they're sticking with, at least for the time being. I appreciate the focusing performance of other systems, too, but I think Panasonic's decision to stick with contrast-detect AF lies mostly in their desire to be innovating other aspects of the sensor design, rather than AF. In any case, it's definitely a polarizing feature and something you have to weigh in terms of value to an overall camera system (if you're exclusively using manual focus lenses, for example, then the camera's AF is a moot point).

If my quick math is correct, you should be able to get around 17-18 minutes of recording time to a 256GB card if shooting 5.7K 30p in ProRes 422 HQ (1.9Gbps bitrate). This is one of those recording modes that will be greatly benefitted by the ability to record directly to SSDs via USB.

Fair enough, an articulating design isn't for everyone, but it's worth mentioning that it has been a staple design element in every single GH camera, so I wouldn't expect Panasonic to be revising this decision anytime soon.

We're excited about the GH6 as well! While 5.7K 60p in ProRes isn't in the upcoming firmware update, hopefully it's something that's possible to eventually implement. And agreed on the S1, hopefully we'll see something like this in future updates, too.

We don't have an exact ship date at the moment. For the most up-to-date information, check the GH6 product page and you can sign up for stock alerts and notifications there.

It does have an "Extra Tele Conversion" function that provides 2.0x and 1.4x settings.

The built-in fan greatly improves long-term recording, but overheating is still possible under certain circumstances; Panasonic claims this active cooling system will allow for extended recording when using VFR or HFR recording modes, or when recording in ProRes. Outside of these, they claim unlimited recording is supported with all formats up to 4K 60p 4:2:2 10-bit.

Yes, the GH6 seems to have a higher power draw than the GH5, but the GH6 does use the higher capacity DMW-BLK22 battery compared to the GH5's DMW-BLF19 battery (2200mAh and 16Wh vs 1860mAh and 14Wh). Going off CIPA ratings, the GH6 gives you 380 shots per charge when saving to an SD card and the GH5 gives you 400 shots per charge. There're lots of variables that could affect either of these figures, but it seems like the cameras should have nearly the same battery life considering the GH6 is using a larger battery.

Four-channel audio will require the separate DMW-XLR1 XLR Microphone Adapter (and an XLR-connected mic) for channels 1&2 and then you can use the built-in mic or 3.5mm mic input for channels 3&4. This will let you pick the type of XLR-connected mic you need for the specific recording situation (like an interview, for example) and then the built-in mic/3.5mm-connected mic could record ambient/background noise. You can switch the channel you're monitoring with headphones via the audio function button on the top of the camera.

GPS data can be saved to files' metadata using the wireless connectivity and grabbing the location info from a connected smartphone. The camera itself does not have a GPS module.

Panasonic does not specifically indicate if you can power the camera while downloading images from a card using the USB port, but the GH6 does support tethering via the USB Type-C port, which will supply power and provide a live view image/live image transfers when using the Lumix Tether software.

Panasonic does not provide any metrics or test results, so it's hard to objectively compare this camera to other brands in terms of weather sealing- I think it's safe to assume it's on par with most mirrorless cameras of this class. Panasonic does state that it's dust and splash resistant and has a rated operating temperature range from 14-104°F.

It's difficult to be too specific without knowing the details of your editing setup now, but it's safe to say that ProRes is objectively more power-hungry than more compressed formats, like H.264.

It should be a noticeable improvement from previous generations, but it's still a contrast-detection system (compared to a phase-detection system). Considering the intended use applications for the GH6, this focusing system is solid and reliable, but it won't be on the same level as a phase-detection system if working with fast or erratically moving subjects.