Great Budget Zoom Eyepiece for Astronomy | SVBONY 7-21mm Review & Telescope Tests

How well do Zoom Eyepieces work? Can they replace individual lenses for your telescope? Let&test the design and performance of this Zoom Eyepiece by observing the surface of the Moon. If you own or are interested in buying a Zoom Eyepiece please let me know about your experiences and questions in the comment section below. I appreciate SVBONY sending me this Zoom Eyepiece to review at a reduced price. Please visit the following links if you are interested in buying this product! US buyers can enter code "MICHAELMARTIN" to receive an additional discount!!! 0:00-Intro & Unboxing 2:26-Design Overview & How to Calculate Highest Useful Magnification 5:42-Real-World Test Observing the Surface of the Moon Music: "Lazy Walk", "Sunday Rain" and "Blue Dream" by Cheel Follow Late Night Astronomy on: “The heavens declare the glory of God”-Psalm 19:1 #astronomy