Black and grey tattoos are very popular and have definitely evolved throughout the years as a tattoo style.
Tattooing was forever changed when the black and grey tattoo style came into play and spread like wildfire. Everyone wanted a black and grey fine line tattoo. Shinhye Kim aka Shine is a tattoo artist from Korea who travels around the world to make awesome tattoos. Her style is her original take on black and grey.
Shine's tattoos are smoothly done. Making use of fine lining and a wide range of shading values. The tattoo subjects range from animals, statues, to floral elements- stuff that really looks rad when put on skin. Her work reflects her drawing skill, a must have for any tattoo artist, especially those who do black and grey. The technique is well executed, hence making her style distinct.
You also might be interested in checking out this awesome post: Beautiful Black and Grey Tattoos by Tamara Santibanez.