The difference between PSD layering and vector pictures

PSD file and vector material is the biggest difference is that the former after the image quality will drop, the latter can be unlimited amplification, image quality will not be affected.

PSD layered material is a bitmap, the bitmap is composed of pixels, image amplification will become blurred, not clear.   　　Vector material, is generated by the mathematical formula of the image, can be arbitrarily magnified, the image will not change the fuzzy PSD layered material can and vector map to transform each other? A: Vector graphics can be easily converted into bitmaps, but the bitmap conversion to vector graphics requires a very complex process, and the resulting vector image quality is far inferior to the original bitmap good.