if you want a great mount that CAN get that IMAGE ZERO 'D in and hold it be position , THIS be NOT the product . for the money , it be fine . you just have to work at it get that IMAGE SET ON SCREEN WITHOUT USING `` KEYSTONE '' CORRECTION . the BIGGEST ISSUE be `` HOLDING '' it be position . require ` SLIGHT ' RE-POSITIONING EVERY FEW day . no BIG DEAL when you consider it be ` very ' INEXPENSIVE .