If you are a professional photographer or an enthusiastic hobbyist photographer, make sure to use a color management monitor such as the ones below:

EIZO CS2740

A 27 inch 4K monitor + Colorimeter + Monitor Hood

CS2740 + Colorimeter + Monitor Hood + LED Stand
This pack is recommended for people who print their photos

You are entitled to a discount coupon for EIZO color management monitors, if you take Masa Onikata’s Lightroom lesson(s).
 
 

BENQ SW271 and X-Rite I1 Display Pro

A 27 inch 4K monitor + Colorimeter
( The items must be purchased separately)