After a bit more than 6 months and about 50000 photos later, I have my verdict on the Sony a7R5 or a7RV. It is a fantastic camera, but with a few things I personally could find to be better.

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0:00 - Long term review
0:36 - Those pesky mega pixels!
2:42 - What's in front of the camera
3:15 - A few thoughts on video features
4:43 - L-brackets or...
6:22 - Sensor protection
7:58 - Another annoyance
9:20 - The infamous error message
10:05 - Flip-flop screen
10:46 - Benefitting from custom buttons
12:00 - Pixel shift
12:10 - Build-in focus stacking
12:58 - Final verdict

Affiliate links (I get a small commission for each sale without any extra cost for you) for MY GEAR and recommended gear:
My Landscape Photography Gear:

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https://bhpho.to/304aMIG

Sony a7R3:
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L-bracket a7R3 (Smallrig):
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Sony 12-24 f/4:
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Sony 16-35mm f/2.8
- B&H: https://bhpho.to/2PnUyug
Sony FE PZ 16-35mm f/4
- B&H: https://bhpho.to/3KPfX7C
Sony 24-105 f/4:
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Tamron 28-200 f/2.8-5.6
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B&H: https://bhpho.to/3dY66ie
100-400 LENSES:
- B&H: https://bhpho.to/2BmeLK2
Sony 100-400 Lens Collar Shoe:
- B&H: https://bhpho.to/2BmkqzN
TRIPODS:
- Benro Travel Angel FTA19CV0 (discontinued in the US, FTA18CV0 is a close alt.): https://bhpho.to/2BS05zk
- Benro Mach 3 TMA38CL: https://bhpho.to/2JKOExn
FILTERS:
- Amazon: https://amzn.to/3uOeBUW (remember to check filter threat size)
SCREEN PROTECTOR:
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BEST LENS CLOTH! MagicFiber:
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PEAK Design Camera Capture Clip V3:
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DJI Mavic 2 Pro:
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My Vlogging gear:
DJI Osmo Pocket (newest version):
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Micro SD for drones:
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Manfrotto mini-tripod (new version):
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- B&H: https://bhpho.to/30YAzmL
Zoom H1 (new version):
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- B&H: https://bhpho.to/30YORnh
RØDE lavalier mic 2:
- Amazon: https://amzn.to/385dOGo
- B&H: https://bhpho.to/3xoxe3u

Other stuff:
Camera Dust blower: https://amzn.to/2L4cAeQ
First Aid Kit: https://amzn.to/2L2PB3C
Sports Tape (for twisted angles): https://amzn.to/2EaUuGH
Emergency Blanket: https://amzn.to/2QhP7N7
Foldable HEX key: https://amzn.to/2EbdS6u
HEAD Torch: https://amzn.to/2Qkteg3