I got a set of diopter lenses to use with my Sony A77 camera. I've been wanting to try some macro photography for a while now but didn't have a macro lens. Both my kit 16-50mm 2.8 lens and Tamron 70-300 USD lens have minimum focal distances that are too long for macro work. I researched a bit into getting a specific macro lens but the cost seemed a bit high. I found a cheaper alternative called a diopter lens that can be used with any lens. I read that they work best with telephoto lenses so I got a set to fit my Tamron lens, 62mm. Here is the specific set. I took a walk last weekend with the +4 and +2 filters to test them out. It was a bit difficult because it was pretty breezy and I didn't bring a tripod. The filters worked better than expected. The minimum focusing distance was greatly reduced and the image quality was better than expected. I can't wait to get out and try the +1 and +10 filters too. Here are a couple of examples and a link to the full set on Flickr.