>>4207323>Baby mountThe vignetting difference is fractional EVs for native lenses. Sony can support lenses in the f0.6 range, nikon can support lenses in the f0.5 range. The differences are smaller than you think and most of the vignetting actually comes from light loss due to sony using more robust protective glass over the sensor.
>Generally well madeBoth are outsourced mirrorless cameras
>That gives up and diesWhile the A7RIII, A7III, and earlier cameras were known for throwing up "lens error" when wet, this problem was fixed with the A7RIV, A7C, and later cameras. Now their "weather sealing" is on par with everyone else
But regardless, you should never rely on weather sealing as more than insurance. If an IP (ingress protection) rating is not provided, you have no way of knowing if survive truly means water and dust did not enter the camera, or if you got lucky, and operating extending zooms, buttons, and wheels increases the likelihood of a seal temporarily breaking and allowing water to seep or be sucked in to the camera. While youtube tests may seem to prove that some camera or another survives (my pentax was washed off by a faucet - well my A7R IV shot a time lapse in a blizzard), it is possible that these cameras will experience corrosion related failures in the near future. Therefore you should treat weather sealing as weak insurance if it begins raining on your camera and avoid getting it wet, especially around salt water or acid rain.
In fact, an anon here switched from his second generation nikon Z camera to olympus because his "weather sealed" nikon gear ended up with water in the lens mount repeatedly. All that is needed for that to happen is a small piece of dirt interfering with the gasket or extra play in the mount allowing the lens to move slightly and temporarily break the seal.
