Teleconverters for Macro Photos

Teleconverters are a great way to get a little closer to your subject in you viewfinder without having to spook them off by being close to them physically. You can maintain your lens' focusing range while magnifying the view of the image. A 500mm lens with a 1.4X teleconverter becomes a 700mm getting a tighter frame around your subject, from further away. It's great for shooting skiddish animals or insects. It comes at a cost of about 10% image quality for a 1.4X and 20% for a 2X teleconverter. The image quality problems usually occur around the periphery so if you keep this is a blur it shouldn't matter.