Since about version 1.6 of Minecraft, I know of several people including myself that suffer from instant motion sickness when playing minecraft.
I'm almost 100% certain that it has to do with the video rendering. In most situations it is clear that the video rendering produces a distorted image. This becomes most evident when the player stand in a 90 degree corner in a canyon, and very slowly turns around. It can then be clearly seen that the walls of the canyon move in a non-linear motion. It is this distortion that most likely produces the motion sickness.
For instance, I'm able to play serveral first person games such as Oblivion or Skyrim for hours continued gameplay with no motion sickness at all, including movements in "tight spaces". And on the other hand, some older First Person games that had render "optimizations" and thereby also a non-linear distorted view, produced the same motion sickness.
The result is that I had to stop playing minecraft altogether, which is a shame.
Could you consider adding a render mode that produces acurate rendering? Most likely that would prevent motion sickness and enable people sensitive to it to play again.
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Unfortunately, setting the FOV to lowest does not solve it. In previous versions I even hand-edited the config file for even lower values, but it did not give the desired result.
I've noticed this in every version of minecraft i've ever played. It's a fisheyed lens effect. The leftmost and rightmost 25% are stretched to double their correct width. I just always assumed it was the result of a 4:3 aspect ratio game trying to fake a 16:9 aspect ratio (by stretching the screen, but not in the middle 50%). Easy way to notice it is to turn so that the sun in the sky is on the leftmost or rightmost 25%. The sun will be twice as wide as it is tall. Personally it doesn't bother me that much, but if it's a bug (or just user error somehow) I'd love to get it fixed.
EDIT: screenshot attached. Also now that I look at it I find it hard to notice in places even when I know what to look for. The edge of that quartz stairs roof should be far enough along to be affected and yet...I guess it's just hard to see unless it's past a certain point (above 33% wider than tall?). Anyway the sun is all the screenshot is showing off.
EDIT 2: another screenshot to show the sun when looking directly at it. Huge difference.
Fisheye projections cause lines to be curved, which isn't what is going on here here. The unpleasant distortion seen with wider fields of view is a natural effect of a perfect rectilinear projection which can be seen in my attached screen shot with the two inset enlargements of trees, one from near the middle of the screen and the other from the edge.
Although this bug report is marked as fixed, the issue is only closed, but is not actually resolved.
I cant play minecraft since i came back to the game in October. I played it with no problems in February. Now, i get motion sickness immediately. Something changed. My wife gets sick too
It's probably due to perfect perspective that the game renders. There's no lens distortion at all and it seems unnatural for our eye.
Perfect perspective? Are you serious?
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I can play Skyrim for hours on end, no problem at all, but get sick VERY quick when playing Minecraft.
Same with me - Skyrim and many other games give me no problems. Only minecraft causes me problems (and my wife) - and only since 1.13 (Bedrock)
Even the option to push the camera further away from your character might help - anything that reduces the amount of distortion on the periphery of our vision.
Does setting the field of view (FOV) to the lowest setting not achieve this?