Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good adaptor

I use this to mount my Canon 40D to Nextar 8SE. It is simple to use, however, threading in the dark can be tough. I suggest putting this on first and then mount your camera.You must remember that the focal length changes with the removal of the eyepiece, therefore, you photo will not be as magnified. You will be able to photograph the moon with much clarity and the major craters and plains are visible.I give this a 4 simply because of the threading issue.