100-400mm Camera Lenses
Cameras, such as DSLRs, that use interchangeable lenses are an excellent tool as users can start with a basic lens and add more as circumstances and finances allow. A plethora of lenses are available, and some camera systems even accept lenses made decades ago. In particular, a 100-400mm camera lens can be an excellent addition for those who need the extra reach and flexibility offered. However, as with all lens purchases, there are important factors to consider before choosing one that matches a photographers existing equipment and shooting style.
What are the advantages of 100-400mm camera lenses?
The focal length of a lens indicates its reach. For example, on a full-frame 35mm camera, a 50mm lens provides the approximate field of view of one human eye. A 100mm lens has more reach, meaning it zooms in closer to the scene. With a 100-400mm zoom lens, users can enjoy even more reach, and the flexibility of changing focal lengths without having to change lenses. This type of lens is a good choice when shooting subjects that are farther away or for capturing smaller subjects, such as birds or children playing on a field. The lenss reach means photographers can get close from a distance. In addition, telephoto lenses like this naturally tend to blur out the background more than wider lenses.
What are the disadvantages of 100-400mm camera lenses?
Despite their versatility, zoom lenses do require some sacrifices. Compared to prime lenses of the same focal length, zoom lenses let in less light. This is indicated by the maximum f-stop of the lens (smaller f-stops indicate a larger aperture, and hence lenses that let in more light). This means that photographers may find themselves shooting at lower shutter speeds, especially in low-light conditions. Photographers will need additional lighting or tripods to counteract blur in these circumstances.
What should buyers consider when choosing a 100-400mm camera lens?
The first factor to consider is compatibility. Different camera systems use different lens mounts, and these are not interchangeable. In some cases, lens adapters can be used to connect lenses and cameras with different mounts, but there is always the chance of the loss of some functionality. The maximum aperture (f-stop) is an important factor to consider, especially if photographers want to use the lens to capture fast-moving subjects. Image stabilisation is another useful feature, especially since it can help counteract some of the effects of slow shutter speeds and long focal lengths. Although it does not affect functionality, buyers should also consider the filter thread size of the lens, especially if they already have a large collection of camera lens filters.