Home
>
Photography
>
How a Digital Camera Works

How a Digital Camera Works

The digital camera is not something of a magic box that came out of the blue and made wonders! The digital camera is very much like the conventional analog camera, but the technology has been altered. It also contains most of the associated components that the conventional camera contains, like lens and a shutter for letting in light, however instead of reaching a photosensitive film, the light is made to fall upon array of image sensors or photosensitive cells. Much of the differences are like this, yet most of it still remains in oblivion for the ordinary people. And it order that the digital camera gets its true respect, it is necessary to explore these areas of truth and reveal them in light.

Looking a bit more in details about the working of the fantastic device, the digital camera. As a continuation of the above lines, it can be further investigated that the sensor array is basically a microchip about 10 mm across. Every image sensor is a charged-couple device (CCD) converting light into electric charges, and is essentially a silicon chip used to measure light. These charges are stored as analog data that are then converted to digital via a device called an analog to digital converter (ADC). Over the chip are present a collection of very small light-sensitive diodes, named photosites, or pixels that convert light (or more scientifically, photons) into electrical charges called electrons. The pixels are very much light sensitive, therefore with brighter light striking them, produces greater build up of electrical charges. Each 1000 array receptor creates 1 pixel, and every pixel corresponds to some information stored. The light enters the digital camera via the lens, which is the same mechanism as the conventional analog camera. And this light hits the CCD when the photographer presses the shutter button. The shutter opens and thereby illuminates every pixel, however with various intensities.

Taking a look apart, it can be observed that quite a few digital cameras use CMOS (meaning complementary metal oxide semiconductor, a technology of manufacturing these microchips) technology based microchips as image sensors. The basic advantage is that the CMOS sensors are appreciably cheaper and simpler to fabricate than CCDs. Another great advantage from CMOS sensors is that these take very less power compared to other technology, which adds up to the fact as to their extensive use, and can thus even support the implementation of additional circuitry on the same chip like ADC, some control units etc. Thus it can be stated that CMOS technology based cameras are small, light, cheap and also energy efficient, yet at the cost of some amount of image quality.

However the common trend remains that all cameras of the mega pixel range and higher up use CCD chips instead of CMOS. This is because of the fact of picture quality only, leaving aside the price differences.

This is basically the fact about how digital cameras work! Having known this much difference would not come in the photographing expertise of the users, but it always feels a kind of satisfaction on understanding the inner depths of a device that is so close to the eyes!

About The Author

Jakob Jelling is the founder of http://www.snapjunky.com. Visit his digital camera guide and learn how to take better pictures with your digicam.

shuttle to Midway Gilman .. Lockport Chicago limo O’Hare

In The News:

A new scam using Elon Musk's name is making the rounds, promoting "energy-saving" devices and falsely linking the Tesla and SpaceX leader to the products.

China recently unveiled a new bullet train prototype with a test speed of 280 mph that is poised to break records and set new standards.

Hackers sometimes find ways to exploit iPhones, and Apple recently discovered a vulnerability in iOS that may have been exploited for over a year.

Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.

Lynx the robot dog from China is pushing boundaries of what autonomous mobile robots can achieve with a groundbreaking design and unique mobility.

A startup claims to have developed the world's first entirely artificial intelligence-designed and 3D-printed shoe, the brainchild of a 25-year-old.

Creating an email alias can help clean up your inbox by organizing emails based on purpose, like creating different aliases for shopping, newsletters and work.

A multipurpose robotic system promises to transform how items are stacked onto pallets, aiming to maximize space utilization and reduce shipping costs.

Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.

The number of people affected by a UnitedHealth data breach in February 2024 was actually higher than previously reported and was the largest medical data breach in U.S. history.

A phishing campaign uses Google Calendar to schedule fake meeting invitations that appear legitimate, redirecting targets to phishing sites.

Toll road text scam: Fake messages claim unpaid fees, seek payment via fraudulent links. Kurt “CyberGuy" Knutsson says this scam is becoming increasingly sophisticated and widespread.

Kurt “CyberGuy" Knutsson says these steps ensure that your friends and family get to the exact moment you want them to see. Try it out and streamline your sharing experience.

Tech expert Kurt “CyberGuy" Knutsson offers tips on how to protect your identity: Be vigilant, monitor accounts, use smart security, know theft response.

Tech expert Kurt “CyberGuy" Knutsson says cybercriminals are exploiting iMessage phishing protection, tricking users to reactivate links.

It's hard to imagine life without in-flight Wi-Fi these days – but sky-high web surfing comes with its own set of privacy concerns. Here's how to protect yourself.

Over 400,000 cases of credit card fraud were reported in 2024 to the Federal Trade Commission. The CyberGuy explains how to protect against becoming another victim.

A nondescript metal box transforms into a fully functional electric motorcycle that blurs the line between vehicle and urban infrastructure.

Many apps unrelated to location still ask users for tracking permission, and Texas Attorney General Ken Paxton has filed a lawsuit seeking to end this alleged practice by Allstate.

Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.

Melody, the artificial intelligence-powered robot, is life-sized and represents a move toward creating robots that resemble people in appearance and interaction.

Here are five easy smartphone rules from the National Security Agency that you can follow to better protect your mobile device from hackers and scammers.

A U.S. robotics company has developed "Jennie," a robotic pet powered by artificial intelligence that's designed to comfort those facing mental health challenges.

Healthcare records for more than 184 million Americans were breached in 2024, but you can take steps to minimize that risk. Kurt the CyberGuy explains.

The Skyrider X1 from Rictor claims to be the "first amphibious flying passenger motorcycle," and it combines land and air travel in one sleek design.

How a Digital Camera Works

Photography