Vivitar Series 1 105mm f/2.5 Macro Lens

This evening is my first try to take macro shots and is manual focus. Is kinda hard to focus at first as i got shortsighted. But in this digital i doesn't have to worry. Just a click can delete the pictures then slower the results are improving.It was only a try on this lens so i didn't prepare the tripod and stuff for the shots.This lens really can take good sharp pictures and well-known among