Fancy a change of equipment - Need advice

doug56hl

In case you missed it my comments re the 2s were intended as a joke. I could have dropped down shutter speed considerably and thus ISO if my subject had just stopped moving.

snerkler

I know, I thought I was joining in on the joke but obviously my humour was off the mark

doug56hl

It's likely too subtle for me. Rather than your punchline of "For my upcoming trip to Cuba I'm taking a 200-800mm eq lens",  I would have gone myself for the old Mae West standby: Is that a Panasonic 100-400mm lens in your pocket, or are you just glad to see me?...
A fair indication of where my sense of humour is at...

dr_jon

Slightly late to the party, but some thoughts in case they help...

It partly depends on budget and what you want to shoot. For hand-held video the more stabilisation, the better AF and the better sound the happier you'll be. You can cheat AF a bit by having a lot of stuff in focus (meaning a wide-angle lens).

Remember you can get smaller FF mirrorless cameras but the lenses are still quite big and heavy generally.

I think the Camera options are probably:
Sony A7III
Canon R
Fuji XT3 or XT30 (I know not FF but not bad compared to the 5D3)
Nikon Z6

Sizes:
Compact Camera Meter

Low-light performance (move box around in top image, change ISO in top left sub-image to change all):
Studio shot comparison: Digital Photography Review

Lenses:
The problems here is the 24-105 lenses you probably want are quite big and may not even exist in the system. Plus while you can adapt your 24-105 seamlessly to the R it gets even bigger. Also using the Sigma MC11 (you want that, not the metabones) to an A7III isn't great for what AF features you get:
Compact Camera Meter
The Sony and the Nikon have in-body stabilisation (IBIS ), which is better for video, especially with a stabilised lens.
The Fuji lens you probably want (the 16-80) isn't quite here yet, so it's wider/faster/heavier (16-55), not-so-wide and lighter (18-55) or more super-zoom-ey but less quality (18-135). The IBIS camera isn't as good as the two I list, so it's stabilised lenses for video.
The R has a crop in 4k video mode, but you can use a EFS 10-18 to help with that.

I'll stop there in case you've already decided, feel free to ask questions if not and anything here is of interest...