DSLR Cameras and Features

What is DSLR cameras? What are the features?

DSLR (Digital Single Lens Reflex) cameras use digital data storage instead of film. The name itself explains its features. Single lens says it’s not a rangefinder (with a different focusing system). Reflex means the light that is entering into the lens can be either direct to sensor or to the viewfinder).

You can take photos of everything. You won’t be limited by camera. You will get “WHAT YOU SEE”.

Working

  1. Light passes through the lens and strikes a mirror.
  2. The light reflects from the mirror to the focusing screen.
  3. The light then passes through the focusing screen and reaches a pentaprism.
  4. Then pentaprism reflects it and the image will be viewed in the viewfinder.
  5. While taking a photo, mirror moves up and shutter opens that projects digital sensor to light.

photographyDSLRs have got many good features that other cameras can’t give. Some of the features are given below.

Features

  1. Control Panel

Most of the high-end DSLRs still shows the top or rear monochrome control panel. It will display the most important camera settings such as;

  • ISO- This increases the camera sensor’s sensitivity to light, but with that it also increases that amount of digital noise.
  • Aperture- User-selected or automatically adjustable one.
  • Shutter speed.
  • Shots remaining.

Such a control panel cannot be seen in other cameras. And this can be displayed in the back side of camera.


  1. Focus ring

A manual focusing rings can be seen in almost all DSLR lenses. To achieve the focusing, the user can rotate the ring while in the manual focus mode. The older manual focus-only lenses usually have rings with a large distance. This helps in the minute turning of the focus. But many of the auto focus lens provide a short travel distance. While focusing, some of the autofocus lenses’ focus ring will rotate.


  1. Focus areas

DSLRs have more than one focus area. It is usually in between 3 and 11. Professional level camera give more than this. Camera can automatically detect more than one focus areas. Also user can change the focus system and can lock it at a particular area.


  1. Battery grip

Battery + Grip is the two purposes it can provide. By adding the batteries, it can increase the power which is available. Also it creates a convenient battery grip that can be click in the vertical direction.


  1. Mirror

DSLRs have a mirror. After passing the light through the lens, it strikes on this mirror. Mirror reflects the light up to the focusing screen. It reaches the pentaprism and further at the viewfinder. While taking a photo, the mirror flips up and a shutter opens then exposes the digital sensor to light. This is why a DSLR make a particular sound while capturing a picture. This also results in a thicker camera.


  1. Dust removal system

DSLRs provide a dust removal system. By shaking the sensor, the dust particles will be removed easily. Rather than a movement, actually the sensor vibrates. Nowadays Anti-static coatings over the sensors are offered by the manufactures. Manual cleaning of the sensors is required here. These systems work with a very high efficiency.


lenses

  1. Mount

Mount is the physical connection between the lens and camera body. Lens informs the camera about its focal length, apertures range and some of the physical characteristics too. The camera can set the aperture value, focusing etc.


  1. Live view

Some of the newly manufactured DSLR models provide a live preview of picture taken with the LCD. Tripod using photographers have a major help with this feature. Generally, DSLR cameras are heavy to handle. Especially of long lenses attached. While using live preview, it is very difficult to hold.


  1. Hot shoe for external flash

DSLRs usually have a built in flash. Also it can use external flashes. These flashes are powerful. It also offers advanced features. Connectors in the hot shoe helps to communicate between camera and flashes. It can work in either manual, automatic or through the lens modes. Automatically means the flash can calculate the light intensity.


  1. TTL (Through The Lens)

The viewfinder displays the actual image that will be formed in the sensor. Light travels through the lens, reflects and hits at the mirror further reaches the viewfinder. These results in a brighter and sharper image forming in the viewfinder.


  1. Ultra-sonic motor (USM)

For rotation USM lenses use vibrations from a tiny element and movement. It’s a faster, accurate and a great focusing system used in higher-end lenses. It removes the use of rotating screw like regular lenses.


  1. Sensor

DSLR sensors are either CMOS (complementary-oxide semiconductor) or CCD (charge-coupled device) . CCD or CMOS is basically a device that measuring light intensity each of its pixels. They are similar in use. But, different in design.

The main difference between point-and-shoot and DSLR is the size of the sensor. DSLR’s sensor is almost 14 times larger than point-and-shoot’s. so more light hit on the sensor. A large sensor offers a large dynamic range display and works better in low light.
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302 thoughts on “DSLR Cameras and Features

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