This is what annoyed me the first time I saw vector icons used in Linux desktop environments. I appreciate the attempt at making something that scales to any size, but in practice you need to custom design the smallest versions of an icon.
Even at the larger sizes, a vector won't always look great. If the renderer doesn't fudge vector edges to snap to pixel edges, you'll end up with blurry edges instead of clean, sharp ones.
Even at the larger sizes, a vector won't always look great. If the renderer doesn't fudge vector edges to snap to pixel edges, you'll end up with blurry edges instead of clean, sharp ones.