Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Returning it, minor change is minor

I don't really see much of a difference, certainly not enough to give up my eye cup for. It works ok with glasses, but better without, you can see everything ok if you shift a millimeter in any direction, I just don't see enough of a change to warrant it. I was hoping it would enlarge the viewfinder for manual focusing in a studio environment, but i'll spend the money on a focus chart instead