With a full frame camera, a 40-50mm sees about the same as what a human eye sees. So if you didn't have a lot of room to pack lenses and wanted to carry around your camera and capture what you see, a lens like this would be perfect since it barely protrudes from the camera.
What about a stubby one?
From a non-photographers perspective, it doesn't look capable of anything more than a selfie.
With a full frame camera, a 40-50mm sees about the same as what a human eye sees. So if you didn't have a lot of room to pack lenses and wanted to carry around your camera and capture what you see, a lens like this would be perfect since it barely protrudes from the camera.