Andersonm

If it seems somewhat unpredictable which camera work with which remote, the connection might be a problem - the contact between the camera and the plug.

That tells a really different story. OP's image looks like the room had a reasonable amount of light throughout - obviously light through the window, but due to reflections, the dark areas ...

This needs testing and a process of elimination. What if you use the "non-working" remotes on the "working" cameras? And vica versa? Either the remotes or the cameras, or something in between like ...

There is a wide range of reasonably possible and remotely interesting photography and video situations. Birds. Space shuttles. People at weddings and birthday parties. Buildings. Mountains. ...

Well, you can in any case switch the "auto power off" setting to high. I believe Standard is just a regulatory limit for when the camera becomes too hot to have skin contact with for a long time. ...

And of course, "Auto power off temp" should be set to HIGH.

You may well be able to get a little bit more time if you take out the battery and flip the screen away from the camera.  Other than that your only option is to record at 30 fps. But 4k at 30 fps ...

Olympus OM-1, the old analog one. And the E-M5 silver version.

I don't have any practical experience with bird photography, but from what I've picked up, your shutter speed might be on the slow side. See: ...

A screwdriver is cheap. A 2 meter long screwdriver is expensive. In 99.9% of cases, all you need is a screwdriver. In 0.1% of cases, you can't do the job well without a 2 meter long screwdriver, so ...

I echo the question: why f/1.2? it’s like asking: For driving to the grocery store, is a Land Rover or a Humvee the better option? Maybe you have a special case where you need to carry a lot of ...

The Slint lavaliers cost $10 for 2 on eBay. They will have no shielding whatsoever. Still, as you can see, without connection to the power mains, there's no noise. Unfortunately the long USB cable ...

Difficult to say if the same issue would persist with a power bank. Most likely the problem isn’t your power cord, but your microphone cable. Some very cheap ones are completely unshielded. Try ...

I don't often do professional graphics work, so that might be a difference. Yes, but usually I view things at 100% or the resolution that it's comfortable to view things at. If I am viewing a video ...

Have you considered the OM-1?

JPG is a lossy compression, and I have seen many rather ugly compression artifacts in my life. PNG is lossless. This is a significant qualitative difference. Bit depth doesn’t matter to me. This ...

I use HEIC on my iPhone, because as far as I understand, it's necessary for the "Live" photos. I haven't invested the time to learn if this is true or not. But overall, I very much dislike it. The ...

When you insert a battery, does it immediately start doing this? There are instructions on how to activate a service mode here, which should work for the GH5 as well: https://www.dpreview.com/forum ...

I notice several of the unhappy people above don't say whether they have upgraded the firmware.... it's more "it has been gathering dust for a long time" ;-)

If everything in the image is blurry, then this is hand shake / camera movement. Faster shutter speed and better in-body image stabiliation will help. The A6400 does not have IBIS, but A6500 and ...