Easy to use if you just want to see the subject up close and take a picture. Difficult to use if you want to use the included image measurement and comparison software. The USB connection comes in and out regularly. The instruction manual was clearly written by someone who does NOT speak English. Broken English and often pointless instructions. Image stability is difficult to achieve. The light and focus tend to be a bit surprising on their own. It probably has more to do with the cheap controls for these functions. I haven't figured out how to measure the captured, saved image yet. Can only be measured on a live image. If the software worked better, this product would be valuable. If the software didn't work as expected, it would be overpriced.