Home
>
Personal Technology
>
Is Digital Camera Technology Making Film Obsolete?

Is Digital Camera Technology Making Film Obsolete?

Perhaps not yet, but the handwriting might be on the wall?

How is a digital camera different from a film camera? What are pixels and why are they important? What's the difference between optical and digital zoom? What advantages do digital cameras have compared to film cameras? Let's address these and other questions as we discuss digital camera technology.

First a short history and overview of digital imaging?

The technology began with television in the early 1950's when researchers discovered how to convert video images to electrical signals for storage on magnetic tape. In the 1970's electronic still photo cameras were developed. These employed the first generations of solid-state image sensors. By the late 1980's megapixel sensors were introduced - the technology that paved the way to today's modern digital cameras.

Fundamentally, film and digital cameras do the same thing. Both utilize camera lenses to focus photographic images on a light sensitive medium where they are stored for later retrieval. But the way each camera does this is radically different.

Instead of capturing the image on film that must be developed and printed, digital cameras measure light and color characteristics using photodiodes built into a sensor - either a Charged Coupled Device (CCD) or Complementary Metal-Oxide Semiconductor (CMOS). An Analog-to-Digital Converter (ADC) then converts the signal to binary, or digital, code. This code is sent to a Digital Signal Processor (DSP) which adjusts photographic elements such as contrast and color, and compresses the file for storage in the camera's memory, compact flash card, or other memory device.

Digital cameras have huge advantages when it comes to viewing and printing photos. It's nearly instantaneous! We can immediately look at the picture on the camera's LED screen, and if we don't like it, delete it and shoot again. Or we download and view it on our computer's monitor. And the pictures can be cropped or enhanced in minutes on the computer with photo software and printed with a photo printer. Plus many digital cameras have optional printer docks that don't require a computer at all.

What's a Pixel?

The human eye perceives a nearly infinite blending of light and color which high-quality film can approximate in a photograph. A digital image however, is a binary code file that records these variations as elements called pixels - short for picture elements.

Pixels are tiny squares of light and color, that when assembled create a mosaic. And like a mosaic, if the squares are small enough we see a smooth, photographic image. However, if the pixels are too big the transitions appear jagged or out of focus.

More pixels equal higher resolution and photos with clearer sharper detail, much like when you look at a mosaic with very small elements. For example, a 3 Megapixel digital camera can produce pretty good snapshots and even enlargements to about 8" X 10". But the more you enlarge, crop or otherwise manipulate the image, the larger the pixels become, degrading the photo's quality.

Does size matter?

The number of pixels the sensor produces is important, but so is the quality. The CCD sensors of many small digital cameras are about the size of a small fingernail, while some larger models will feature sensors up to about 1" across. There are conflicting opinions about sensor type and size, and the technology is advancing. But in general it can be argued that the photodiodes in a tiny CCD probably won't be as powerful or effective as an equal number in a larger sensor.

So unless your most important considerations are the smallest and/or cheapest camera, you're likely to be happier with the picture quality from a slightly larger model, assuming both have the same number of pixels.

All Zooms are not equal

The specs say the camera has 3X optical and 4X digital for a 12X total zoom. Sounds good, right? The answer is yes and no. Optical zoom works like a telescope, while digital zoom crops the picture. Using these zoom specs with our 3 megapixel camera example, here's what happens.

Optical zoom brings the image 3X closer and uses all 3 million pixels. But digital zoom crops up to 75% of what the lens sees and the sensor is exposed to, so the photo now has about 750,000 pixels. Depending on lighting and other conditions, using full digital zoom may not even get you a good 4" X 6" print.

The Future of Digital Photography

The last few years have seen tremendous advancement in digital imaging technology. Some high-end digital cameras can now generate more than 12 million pixels and produce photos that rival medium-format film cameras. As with all electronic technology, it's reasonable to expect even better cameras will come to the market over the next several years.

Photography "purists" will probably resist abandoning their film cameras as long as possible. But when comparing convenience, flexibility and quality, it seems inevitable that the majority of photographers will opt for digital over film photography ? and probably sooner rather than later.

For more information on comparing features and finding the best digital camera to fit your photography style and budget, see digital camera comparisons.

Digital cameras information from A to Z: camera types & features, how they work, accessories, photo printers, comparisons and more - plus digital photo processing tips and info at digital camera comparisons, Your Complete A-Z Resource for Digital Cameras, Accessories and Information.

executive chauffeured services Bradford .. Madison to Airport car

In The News:

Getting virus alerts on your iPhone? Tech expert Kurt “CyberGuy" Knutsson helps you learn how to handle fake scam alerts and boost security.

Tech expert Kurt “CyberGuy" Knutsson says opening emails is safe, but risks arise from interacting with links, attachments or HTML content.

Tech expert Kurt “CyberGuy" Knutsson reveals four signs of compromised Social Security numbers and offers five steps to protect yourself.

Tech expert Kurt “CyberGuy" Knutsson discusses how MAB Robotics' Honey Badger 4.0, a versatile robot, now walks underwater with amphibious skills.

An updated Android trojan called FakeCall hijacks bank calls. Tech expert Kurt “CyberGuy" Knutsson says Android phone manufacturers and Google need to step up their game on security.

The Massimo Modular E9 is a sleek, smart and comfy tiny home in 409 square feet. Tech expert Kurt “CyberGuy" Knutsson takes a closer look at what the future of housing might look like.

Every stock trader should consider a virtual private network to safeguard their trading, according to tech guru Kurt "CyberGuy" Knutsson.

Apple recently announced its new lineup of Macs and rolled out Apple Intelligence, its latest artificial intelligence-powered feature for its products.

A Swiss-engineered robot can climb ladders, showing why it's at the cutting edge of autonomous robotic solutions for harsh industrial settings.

Kurt "CyberGuy" Knutsson presents the cities targeted most by robocalls, why this is happening and what you can do about it to protect your privacy.

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

Kurt "CyberGuy" Knutsson shares tips and suggestions for how to get the best use out of the updated Calendar app available with the latest iOS update.

Your Social Security number, your unique identifier used for many purposes, has likely been leaked on the Dark Web; here are some steps you can take to protect yourself.

Researchers have developed a new technology that creates strong, sticky fibers capable of lifting objects and capturing things from a distance.

Smart rings track the same things that smartwatches do, including steps, sleep and a general overview of your overall health, and they tend have more battery life than smartwatches.

Researchers have developed a robotic finger that can perform routine medical exams like those conducted by doctors, helping to address the growing shortage of trained professionals.

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

Insurance administrative services company Landmark Admin reported that a data breach from a May cyberattack affected over 800,000 people.

Sotheby's will auction the first artwork created by Ai-Da, the world's first robot artist created in 2019 by British gallerist Aidan Meller.

More than 250 million users of the Verizon Messages app will have to switch to another app. Verizon is shutting down Messages in the next month.

Tech expert Kurt “CyberGuy" Knutsson provides a list of 10 celebrities who are the most targeted by deepfake scams, including Tom Hanks.

Tech expert Kurt “CyberGuy" Knutsson discusses how Vast's Haven-1, launching in 2025, transforms space living with human-centric design.

UnitedHealth confirms over 100 million Change Healthcare users had their data stolen. Kurt “CyberGuy" Knutsson reveals what happened and what caused the breach.

Tech expert Kurt “CyberGuy" Knutsson explains how iOS 18 brings new text formatting and animated effects to the Messages app.

Whether you're a social media veteran or novice, Facebook friend request scams are common. Kurt the CyberGuy provides tips to keep your account safe.

Is Digital Camera Technology Making Film Obsolete?

Personal Technology