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Title: Useless for birding, poor focus
Review: I know that these are mostly used for astronomy. I thought they might be good for small birds, up high in trees, and so on. In theory, this could work. In practice, they won't focus closer than 100 yards. The focus is fuzzy at that distance, or any other distance, as far as I could tell, and the focus is fuzzier on the left side than the right. Might be okay for astronomy. I didn't try that. Maybe there are quality control problems at the factory or something. Disappointing. I had to return them.
