I am a professional lens repairer, repairing and testing professional lenses. When I received the unit I wanted to do some simple tests on it and the lens I am repairing, such as sharpness, resolution and overall quality. I fully charged both batteries and then started testing by setting everything to automatic. Video was grainy and very poor, and stills were no better. Then I tested with different settings and the results were still the same, very poor resolution and sharpness. About 4 minutes into the test, the battery began to drain rapidly. This happens with both batteries. The only thing I like is the remote control. Very simple design and no signal problems. I also liked the microphone, I thought it made more sense with my smartphone. Overall the price is very low so you really get what you paid for. The overall rating of this device is very low.