What is a teleconverter?

How to use a teleconverter: step 1

What is a teleconverter? A teleconverter is an add-on optic that sits between the camera body and a compatible lens. Popular options include 1.4x, 1.7x and 2.0x, which reduce the maximum available aperture by one, 1.5 and two stops respectively. Click to read our short guide on how to use a teleconverter with your camera and tripod.