Extension tubes are accessories that are used in photography to help magnify the image of a subject. They are essentially hollow tubes that fit between the camera body and the lens, which increase the distance between the lens and the image sensor, allowing the lens to focus closer to the subject. The primary purpose of extension tubes is to enable macro photography, which is the art of taking pictures of small objects or living things at high magnification. By moving the lens further away from the image sensor, extension tubes reduce the minimum focusing distance of the lens, allowing you to get closer to your subject and achieve higher levels of magnification. Extension tubes come in different lengths and sizes, and they can be used with both prime and zoom lenses. They are generally available in sets of different lengths, so you can choose the combination that works best for the specific lens you are using and the level of magnification you want to achieve. One of the main advantages of using extension tubes is that they are a cost-effective way to achieve macro photography without investing in expensive macro lenses. They are also lightweight and easy to use, as they do not have any electronics or moving parts. However, using extension tubes can also have some drawbacks, such as a reduction in the amount of light reaching the sensor, and a decrease in the depth of field due to the close focus distance. Overall, extension tubes are a valuable accessory for photographers who are interested in macro photography and want to explore new creative possibilities. They offer an affordable and flexible way to achieve high magnification and get up close and personal with the world of small things. .