What is special about a 50mm lens?
50mm lenses are fast lenses with a fast maximum aperture. In fact, a 50mm lens allows approximately five times the amount of light into the camera’s sensor than a consumer-grade zoom lens. This enables the use of lower ISOs and faster shutter speeds so you can freeze motion and eliminate camera shake.
Why is a 50mm lens good for portraits?
50mm lenses One of the greatest attractions of this lens is that the f/1.8 version from many manufacturers is relatively inexpensive. Furthermore, it provides a field of view comparable to that of the human eye, and the wide maximum aperture makes shallow depth-of-field photography across a range of subjects possible.
What makes a lens great?
Better quality lenses tend to have a larger aperture, allowing more light to pass through to the sensor. The aperture size is measured as an f-stop. Confusingly, the larger the maximum aperture of the lens, the smaller the f-stop. Faster lenses are key to capturing sporting events and wildlife.
What is the best lens for video?
The most used lenses for video are Sigma’s 30mm ( made for APS-C size image sensors), 50mm, and 85mm lenses (all with f/1.4). The representative from Sigma said that their lenses have extremely quiet HSM (ultrasonic) drives, and are very sharp, even sharper than comparable Nikon and Canon Lenses.
What does a 50mm lens mean?
The EF 50mm lenses are a group of normal prime lenses made by Canon that share the same focal length. These lenses are based on the classic double-Gauss lens, with the f/1.8 being a standard six-element double-Gauss with an air gap and powers between element 2 and 3 and its faster cousins adding additional elements.
Why do I need a zoom lens?
The number one reason you will want to use a telephoto zoom lens is to get close to a subject when you either can’t or shouldn’t. Wildlife photographers love their telephoto zooms because they allow them to take pictures of animals without disturbing them. This makes it easier to get more authentic and natural images.
Why do microscope have lenses?
While the modern microscope has many parts, the most important pieces are its lenses. It is through the microscope’s lenses that the image of an object can be magnified and observed in detail. A simple light microscope manipulates how light enters the eye using a convex lens, where both sides of the lens are curved outwards. When light reflects off of an object being viewed under the microscope and passes through the lens, it bends towards the eye.