extension tubes

Extension tubes are a great little lens accessory, and I almost always have at least one of the Canon ones in my bag these days. At first glance they look like small, black extenders (sometimes called teleconverters), but actually they don’t have any optics inside them at all. It can be a bit confusing because extenders and extension tubes look similar, so let’s be clear from the start which is which, and what they do: Extension Tubes (what we’re talking about today) These sit between the lens and the camera body and act as a spacer to move the lens