Is it compatible? Standard Zoom. Photo by Rodney Campbell; ISO 250, f/9.0, 1/400-second exposure. There are many different types of lenses and it can all get quite confusing when trying to find the right ones for your lifestyle requirements, to answer your needs and to correct your eyesight. The simplest form of spectacle or contact lens is the single-vision lens, made to a single prescription to correct a particular eyesight problem. Standard zooms are probably my second most used lens type. Convex lenses. Macro Lenses. - Apochromatic lens Lenses designed to make the refractive indexes of three wavelengths (colors) of light the same, as with a semi-Apochromatic lens. Free with all frames Find out more. The lens capsule forms the outermost layer of the lens and the lens fibers form the bulk of the interior of the lens. Varifocals. Macro lenses, often used for focussing on finite detail in very small objects, are usually high quality lenses that are well manufactured. The lens has three main parts: the lens capsule, the lens epithelium, and the lens fibers. Which artificial lens can you afford? The cells of the lens epithelium, located between the lens capsule and the outermost layer of lens fibers, are found only on the anterior side of the lens. When it comes to choosing your lens, you need to ensure that you are selecting a lens that will work with your camera. Different Types of Lenses. Not all IOL types are covered by insurance. In other words, to correct near-sightedness (myopia) or long-sightedness (hyperopia). These lenses have been used for decades and are the most popular type. In a convex lens (sometimes called a positive lens), the glass (or plastic) surfaces bulge outwards in the center giving the classic lentil-like shape. Single focus lenses are usually for people that need their vision to be enhanced for everyday tasks such as driving or reading. Faster lenses with some type of stabilization are best. The curvature of the lens, its thickness and weight will depend on the amount of long or short sight it’s designed to correct. Look for stats such as f/2.8 or similar with IS or OS. A convex lens is also called a converging lens because it makes parallel light rays passing through it bend inward and meet … The different types of lenses. There are three different types of lenses for Canon consumer interchangeable lens cameras, these include EF, EF-S and EF-M. There are two main types of lenses, known as convex (or converging) and concave (or diverging). These types of lenses are to correct the vision for people who have trouble seeing things that are close or far away. I currently use the 24-105mm from Sony and it is a gem of a lens! But Medicare and most insurance companies do cover the cost of the most common IOL, the monofocal lens. This type of lens is used for fluorescence observation because the transmission ratio is ensured for ultra-violet light with a wavelength of about 340 nm. Other options — such as multifocal, EDOF and accommodative IOLs — can also reduce the need for glasses or contact lenses.