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A camera is a mechanical instrument that uses a lens to capture light rays. The mirror in the camera reflects this light into the viewfinder and flips out of the way to take the photograph. Light travels through the camera to film in the back where it records an image of the subject viewed through the lens. The first photograph was taken on paper in 1839 by William Henry Fox Talbot. He used a different process than Daguerre, which used chemicals to make a positive image.

Zoom lens

A zoom lens is a kind of lens that is available in a variety of focal lengths. Its focal length varies and can change depending on the camera’s sensor or film size. Although this type of lens used to be inferior to prime lenses, it is now widely used by photographers. In fact, most people nowadays use it as their primary lens. Here are some of the ways you can use this lens on your camera. Listed below are the different types of zoom lenses.

Hot shoe

The accessory mount on the top of a camera is commonly referred to as the ‘hot shoe’. Several different accessories can be attached to the hot shoe, including speed lights and external flash units. There are also third-party accessory shoes that add other features, such as a spirit level or thumb grip. These accessory shoes may also be decorative, and can match the rest of the camera’s accessories. Here are some common options:

Digital sensor

The digital sensor on a camera can take photos, but what exactly is it and why does it need to be changed regularly? A camera’s sensor is made of two types of semiconductors, CMOS and CCD. Each has some key differences. Specifically, they differ in size, performance, and price. Here are some key factors to consider when choosing a camera’s sensor. To learn more about this important feature, keep reading.

Shutter speed

The shutter is a tiny flap that opens and closes to let light reach the camera sensor. When a picture is taken, the shutter speed describes how long the shutter stays open. Fast shutter speeds mean that the camera is open for a short period of time while slow shutter speeds mean that the shutter is open for a longer period of time. Both shutter speeds and frame rate are expressed in fractions of a second, so a 1/100 shutter speed means that a picture is exposed for 1/100th of a second.


In photography, the aperture of a camera is the opening in the lens that lets light in. It works similar to the iris of our eyes, which controls the size of our pupil. Changing the aperture of a camera helps you control the depth of field and add dimension to your photographs. For instance, a wider aperture allows you to take photographs with a blurred background, while a smaller aperture produces sharp images from foreground to distant horizon.