Keen photographers will usually have multiple lenses for their cameras depending on the types of photographs they want to take. Many lenses will have multiple purposes and can be used for a number of different types of photography. Here are some important things to consider if you are going to invest in a new camera lens:

1. Look for lenses with the correct lens mount. This will depend on the brand of camera you own. Make sure you’re only looking at the ones that will actually work for you. If you’re unsure, check with the retailer.
2. Check that the lens will work with your camera’s size sensors. Different cameras will have different ones. This will make sure the images are big enough to cover the sensor.
3. See the lens in person. The sizes and weights will vary considerably. Check whether it will fit in your existing case and how it will feel to carry the lens around.
4. Consider the types of photographs you take. If you like close ups, a macro lens might be a sensible option for you. If you photographs landscapes and architecture, consider an ultra wide lens.