I asked Google to search for: teleconverter "minimum focus" There were about 1300 search results. Many of those web pages indicated that the minimum focus of the lens was maintained. OTOH, in a few cases the product listing said using that teleconverter would give a 1:1 image -- that sounds substantially closer than a normal telephoto lens. I would say that you'll have to ask ... and/or use a local camera shop and try that setup before you buy. MGD