Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Teleconverter for Nikon lenses
Review: When I read the instructions for this teleconverter, it indicated that it was designed only for Tamron lenses, and so I was concerned that it wouldn't work with my Nikon lenses. However, it did. It was a tight fit, but not a problem. The teleconverter worked as I expected it to. With my 70-300 lens, I was able to get 600mm (with the crop factor on my camera, 900mm!). However, when I viewed my images on my computer there was considerable fringing on the images. I had taken shots of birds on a backyard feeder, and all around the edges of the birds and the curve of the feeder pole, which had blue sky as background, there was a dark blue edge. This is not acceptable, and for that reason I returned the product. I have no idea if this would be more useful with a more expensive lens than I have, or with Tamron lenses. For my use, it was not good. Amazon's return policy has been superior.
