Teleconverters and extension tubes allow extra, yet affordable reach. Whilst a teleconverter (also tele extender) is a secondary lens mounted between the camera and a photographic lens, an extension tube has no optics. A teleconverter enables more reach for a telephotoTELEPHOTOA lens with long focal length capable of making distant objects appear nearer thus larger. Essentially, it isolates and magnifies the subject so that it appears as a full image when shooting from a distance. Telephoto lenses are ideal for photographing subjects that are further away, such as wildlife and sports photography. lens by multiplying the focal lengthFOCAL LENGTHMeasured in mm, it is the distance from the focal point of a lens (its centre or curved mirror where light converges) to the plane of the image sensor (film) when an object is in focus. A shorter focal length lens sees a wider image and a longer focal length brings your subject closer. For example, a 15mm lens sees a very wide image and is perfect for landscape photography. Conversely, a 500mm lens sees a very narrow image, brings the subject much closer and is thus great for subjects that are far away, like a bird in a tree. With zoom lenses, its minimum and maximum focal lengths are indicated, for example, as 24-105mm. A zoom lens allows you to change the lens’ focal length, with shorter (wide-angle) and longer (telephoto) options, whereas a fixed focal length lens requires you to move back and forth to find the correct image composition. of the lens, whereas an extension tube is designed to enable a lens to focus closer than its normal set minimum focusing distance. Extension tubes are exceptionally useful for macroMACROProducing photographs that render extreme close-ups of extremely small subjects like insects, hence its popularity among nature photographers. It requires using a macro lens with a large reproduction (magnification) ratio of at least 1:1, which renders a subject larger than life size. Macro lenses are capable of focussing at extremely short distances (some as little as a few centimetres), allowing the photographer to get very close to the subject. photography, enabling you to convert almost any lens into a macro lens at a fraction of the cost while maintaining its original optical quality. Whether Canon or Nikon, make sure that the lens converter or extender is compatible with your primary lens.