While framing shots you will have often come across a situation when the closer you get to an object, the more difficult it is to focus on it. After a certain distance, if you get any closer, then no matter how hard you try, you won’t be able to focus on the subject. This is because every lens has a minimum object distance (MOD) and the lens is not able to focus on anything closer than that. So what do you do if you do if you need a close up and the prime lens that you are using doesn’t allow you to get any closer? Now that’s when close up lenses or close up filters come into picture.

These supplementary lenses are a cheap alternative to macro lenses. These meniscus lenses are called supplementary, since they can be screwed onto your routine primary lens without any hassle. On the other hand, some high-end cameras like the Canon EOS 5D 180mm, come with special macro lenses already. But for those on more of a budget, inexpensive close up lenses will work just like magnifying lenses and help you to focus on subjects at a distance closer than MOD; without the use of a special macro lens.

Available in four strengths, they are classified as 1x, 2 x, 3x and 4x, depending on their magnification. The lens with 1x has the least power and will take you the least close up to the object. The lens with 4x power allows you to go the closest to the object. Close up lenses are also known as close up filters and can be used in combination with each other as well. If you combine the lenses and then screw them in front of the primary lens, then the effect is greater. You should always fit the lens with more magnification first and then the lens with least magnification.