Photography Information

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.


MORE RESOURCES:
This RSS feed URL is deprecated, please update. New URLs can be found in the footers at https://news.google.com/news


New York Times

At Arles Festival, 7 Promising Photographers to Watch
New York Times
These are a few of the questions raised by photographers from places including China, France, Poland, Switzerland and Turkey whose works are on display at the Rencontres d'Arles photography festival, which runs through Sept. 23. These are edited ...




9to5Mac

These are the winners of the 11th annual iPhone Photography Awards [Gallery]
9to5Mac
The annual iPhone Photography Awards have recognized the best images taken with the iPhone over the last 11 years, and now the winners of this year have been unveiled. As revealed on the IPPA website, this year's winners were selected from “thousands ...
Apple CEO Tim Cook Congratulates 2018 iPhone Photography Award WinnersMac Rumors
See photos from this year's 11th annual iPhone Photography AwardsAppleInsider

all 5 news articles »


Fstoppers

Amazon's Second-Best-Selling Photography Book Is Now Available for Free Download
Fstoppers
The second-best-selling photography book of all time in the “Digital Photography” section of Amazon has been made available for free download by its authors, who are currently celebrating reaching one million subscribers on YouTube. Photographers Tony ...



Fstoppers

Get a New Perspective on Aerial Photography With a 360-Degree Camera
Fstoppers
Drones have given us an entirely new perspective in photography and videography but, of course, they aren't the final frontier. This video from PhotoshopCAFE offers a different take on aerial photography and shows you how to do it. Host Colin Smith ...



Refinery29

This Collaboration Means You Can Soon Get Fine Art Photography For Ikea Prices
Refinery29
If you've always been interested in incorporating photography into your home decor but have never been sure where to start (or felt intimidated by what are typically high prices), beginning with photos curated by a camera brand and a beloved home goods ...

and more »



PetaPixel (blog)

This Best-Selling Digital Photography Book is Free Right Now
PetaPixel (blog)
How to Create Stunning Digital Photography ordinarily costs $20 as a paperback and $10 as an eBook. On Amazon, it's a 5/5-star book with over 2,200 reviews, and it's ranked as the #2 bestseller in the categories Digital Photography and Digital Audio ...



Fstoppers

Talent, Not Tools, Will Determine the Quality of Your Photography
Fstoppers
Today, I state the obvious. But sometimes even the most obvious things can be easy to forget. I got an email yesterday from a talented young photographer. The aspiring professional asked a very logical question, one that I myself would've asked when I ...



WZTV

FERRIER FILES: A dangerous game: Abandoned building photography
WZTV
That is a type of wedding photographer who captures very few posed photos. He is looking for moments. The natural emotion of the day. What most people don't know is that there is another side to Jay Farrell's photography, a temptation he can't resist.


Google News

home | site map | Seashell Photography
© 2006