Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very disappointed

The Celestron SkyMaster 20x80 Binoculars were a huge disappointment to me. First of all, the eyepieces were too close together. Even at their widest point, they would not line up with my eyes. Also, the adjustment for focus was far too difficult. I had to apply so much pressure to try to get them to focus, it felt like they were going to break, and I could not get both eyes in focus together. And finally, even looking up at a clear sky, far out in the country, the amount of light these let in was poor. Even though I knew these were inexpensive, I guess I expected too much based on the reviews here at Amazon. For now I will stick with my old 10x70 Nikons until I can afford to buy better glass. The only good things I can say about the SkyMasters are that they look impressive and they mount nicely to my tripod. I returned them to Amazon.