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How Does a Camera Work? Smartphone Camera VS DSLR

Our children may grow up without ever having seen a film camera. The Polaroid camera is defunct, replaced by cell phones and other digital cameras that give the same instant access to photos. In spite of all the changes in technology, the basic concept has remained the same. An image is captured and a medium is exposed to “store” the image. This once took place on film and now takes place on a photo sensor. Choosing the right camera is very important, so it’s better to understanding how does a camera work?


Understanding How Does a Camera Work?

Cellphone Cameras

Cell phone cameras are great for capturing moments as they happen. We all have our phones with us everywhere we go, so they can always be at the ready to take a picture. We don’t have to wait for them to turn on like we do a digital camera, so they’re perfect for candid shots. However, cell phones do make compromises when it comes to image quality, and if you are going to use a printing service to make larger prints, you might want to look into using a dedicated digital camera instead.

Cell phone cameras usually include a software-based autofocus and zoom. These now work very well but still don’t keep up with the best features in digital cameras. Cell phone cameras also use a much smaller sensor than your typical professional grade camera. The image that results may not be high enough resolution and quality for the larger prints.

DSLR Cameras

DSLR stands for digital single-lens reflex. This type of lens pushes an identical image to either the capture sensor or the viewfinder so that the image captured will be identical to the image displayed.

With this type of camera, you can start to consider aspects of the photographs composition to improve the quality of the image you’ll capture.

The depth of  field

The depth of field refers to how much of the image, in terms of distance from the camera, can be kept in sharp. If you are doing portrait work and don’t care whether or not the background remains in focus, depth of field is not important. However, if there is something in the background of the image that you want to remain sharp, you’ll want to adjust your lens accordingly.

Exposure

Exposure refers to the amount of light captured for the image. Depending on conditions, more is not always better. There are three different “ways” to capture light for an image. One is the amount of time you leave the sensor exposed to light, two is how much light you let into the sensor at a time and three is how large the area capturing light is. These correspond to shutter speed, aperture, and ISO. It’s important to balance these with the type of lighting and type of photograph you’ll be taking.

To learn more about DSLR cameras, you may refer this guide.

Now you understood, how does a camera work? And if you get all of these aspects just right, you’ll be able to capture images that accurately reflect what you see in real life. And you’ll have images that you can share with loved ones for years to come.

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