Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good product.

It does very well with Barlow lenses. It does allow you to insert some of the more powerful eyepieces such as a 9mm or smaller. It will not allow you to use a 25mm PL eyepiece because the well just isn't deep enough. I'm disappointed in that regard. That would make far better pictures if I could use that. Other than that, the adapter does allow you to gain access to your telescope with your DSLR. Since that's what it is supposed to do, it works just fine in doing it.