It's true what the ad copy says, these Powermates add nothing to the image except amplification. They are definitely NOT barlows. This one is in excellent condition, with original box, papers, and end caps. Will trade for 2.5X Powermate 1.25" in similarly excellent condition, or will sell outright for $150 plus $5 for USPS Priority shipping anywhere in the conus. Thanks for taking the time to look.