28 May 2021

Canon Celebrates 50th Anniversary of the Aspherical Lens Element

Canon Celebrates 50th Anniversary of the Aspherical Lens Element
Canon Celebrates 50th Anniversary of the Company’s First Interchangeable Lens for SLR Cameras to Feature an Aspherical Lens Element

MELVILLE, NY, May 28, 2021– Canon Inc. announced today that this year marks the 50th anniversary of the release of the FD55mm F1.2AL, the company’s first interchangeable lens for SLR cameras that featured an aspherical lens element. Today, aspherical lens elements are not only used in the company’s lenses for ILC cameras, but also broadcast lenses, semiconductor lithography systems, telescope mirrors and a wide variety of optical products.

Aspherical lenses possess a curvature that is ideal for gathering light at a single point. From the F2.8 L IS USM zoom lens series for professional and enthusiast users — the RF15-35mm F2.8 L IS USM (released in September 2019), RF24-70mm F2.8 L IS USM (released in September 2019) and RF70-200mm F2.8 L IS USM (released in November 2019) — to the RF28-70mm F2 L USM (released in December 2018) which features a fast f/2 aperture across the entire zoom range, Canon’s aspherical lenses help reduce various types of aberration and provide high image quality.

The inherent characteristics of spherical lenses result in the lens being unable to focus parallel rays of light in their complete form at a single common point. Due to the lens’ spherical-shaped surface, blurring of images — known as spherical aberration — and other optical aberrations tend to occur in the captured image. Before the advent of aspherical lens, in order to correct spherical aberration, multiple spherical lenses had to be placed in a specific configuration. However, thanks to their unique properties, the same results can be achieved using only a single aspherical lens. In 1963, Canon embarked upon a program of sophisticated lens research and development in order to develop this “dream lens” that could focus all incident light on a single point and create a consistent, clear image.

In order to mass-produce aspherical lenses, Canon needed processing technology that was precise to within less than 0.1 micrometers1, as well as high-precision measuring devices that could measure to within 0.01 micrometers. Through repeated cycles of design and processing methods, the company finally succeeded in creating the technology needed to mass-produce aspherical lenses. In March 1971, Canon’s first interchangeable-lens SLR camera employing an aspherical lens was released—the FD55mm F1.2AL. Then, in 1973, Canon further enhanced the precision of its lens processing technology with the development of the ALG-Z nanometer2 level ultra-high-precision aspherical lens grinder. The next leap forward happened in 1985, when the company successfully implemented the large-diameter glass mold (GMo) aspherical lens element into the new FD35-105mm F3.5-4.5 (released in December 1985), the world’s first interchangeable lens for SLR cameras to include a GMo aspherical lens. Since then, the technologies used to form and measure aspherical lenses have played a vital part in Canon’s efforts to realize high-performance lenses.

Canon’s technological portfolio includes four distinct aspherical lens processing technologies: Aspherical lens grinding and polishing, which employs diamond-tipped tools to grind and polish the lens glass; aspherical glass molding, in which the lens glass is pressed and formed using an aspherical mold; aspherical replica technology that uses an aspherical mold to form aspherical resin on the surface of spherical glass; and aspherical plastic molding, which injects and shapes resin inside an aspherical mold. Based on the properties of the aspherical lens element and its position in the lens’ optical configuration, Canon will utilize the appropriate technology in order to produce lenses that are able to serve the wide-ranging needs of our customers.

Canon develops its lens processing machinery independently in order to achieve the manufacturing of aspherical lenses with a high degree of precision. To illustrate just how accurate Canon’s technology is, only 0.1 micrometers’ discrepancy is allowed between the dimensions of a lens’ design schematic and the finished product. For a lens expanded to the size of the roof of the Tokyo Dome (diameter: approx. 244 m), this would mean a margin of error smaller than 0.5 mm, or the thickness of conventional mechanical pencil lead.

In addition, aspherical lens grinding and polishing technology — the most precise of the four technologies—is used not only in the production of SLR camera lenses, but also in the sciences. For example, the main camera optical correction system of the National Astronomical Observatory of Japan’s Subaru Telescope features aspherical lenses made by Canon, using the company’s high-precision measurement and processing technologies.

The Effects of Aspherical Lenses
An interchangeable lens comprising of only spherical lens elements, such as large-diameter or wide-angle lenses, results in the presence of spherical aberrations and distortions greatly increasing. Spherical aberration occurs when incident light parallel to the lens’ optical axis, the position of the formed image when light rays are nearer to the lens’ optical axis and images formed when light rays are further from the lens’ optical axis are misaligned, resulting in a blurred image. In addition, distortions occur when the subject and the image formed by the lens fail to form identical images, causing straight lines to become distorted in the resulting image.

Aspherical lenses are the solution to such problems caused by spherical lenses and help produce ideal images. Their curved surfaces, shaped differently than spherical lenses, help reduce a variety of aberrations. For example, in nighttime cityscapes where there might be multiple light sources, aspherical lenses can lessen the effect of “bleeding” effect of the light sources due to spherical aberration.

Into the future, Canon will continue to optimize its optical technologies in order to create products and technologies that help meet our customers’ wide-ranging needs.

Source: Canon USA

18 May 2021

New Canon imageCLASS MF242dw Multifunction Printer

New Canon imageCLASS MF242dw Multifunction Printer
Canon U.S.A., Inc., Updates Lineup with Next-Generation Replacement for Popular, Every Day, Multifunction Printer

The imageCLASS MF242dw is now available exclusively through Walmart

MELVILLE, NY, May 18, 2021– Designed to help streamline efficiency and deliver value for customers navigating through hybrid working environments, Canon U.S.A., Inc., a leader in digital imaging solutions, today introduces a new multi-function, wireless, black-and-white laser printer, the imageCLASS MF242dw. Exclusively sold through Walmart, the new imageCLASS MF242dw upgrades upon the popular imageCLASS MF232w, released in 2016, with increased print and copy speed and added support for two-sided printing. Designed with user experience in mind, this new printer is an ideal option for both small office and home office users in today’s “work from anywhere” climate.

With businesses nationwide operating out of, or transitioning into, various hybrid work environments, with many employees dispersed between physical and home offices, the imageCLASS MF242dw has been pre-designed with features to support multiple ways of working. To help home and office users print to compatible mobile devices, the printer offers native AirPrint (for iOS) and Mopria Print Service (for Android) mobile printing, as well as the ability to connect via a wireless network, or via an ad-hoc Wi-Fi® Direct Connection without the need for an external router. Users may also elect to download the Canon PRINT Business application, available for iOS and Android, for additional mobile feature support including the ability to scan directly to a compatible phone or tablet.

Consistent with the value customers can expect from Canon’s printer portfolio, the new imageCLASS MF242dw offers high-quality print, scan and copy features which are designed to support both personal and business uses. Built to deliver fast printing speeds, the printer can produce up to 28 high-quality prints per minute*, helping users meet fast turnaround times and upcoming deadlines with ease. The included starter cartridge (Genuine Cartridge 137) has a rated yield of up to 1,700 pages, providing users ample print mileage “out of the box” before they need to buy a new toner cartridge.

Aligning with the company’s commitment to sustainability, the imageCLASS MF242dw is designed with eco-conscious features such as duplex printing and low-energy consumption usage of two watts or less in energy saver mode, helping to reduce its environmental footprint while helping to save users time and money.

“As our customers navigate through hybrid working and learning environments, it is imperative they are equipped with solutions that are designed to help them stay efficient and meet current demands,” said Shinichi Yoshida, executive vice president and general manager, Canon U.S.A., Inc. “In alignment with our commitment to innovation, Canon remains dedicated to introducing products that meet current industry and customer needs, and the development of the new imageCLASS MF242dw serves as a prime example.”

Availability
Canon U.S.A.’s new imageCLASS MF242dw multifunction printer is now available exclusively at most Walmart stores and via Walmart.com at an everyday low price of $99.

14 May 2021

Celebrate International Astronomy Day with Canon Europe

Celebrate International Astronomy Day with Canon Europe’s space-themed craft kits  London, UK – 14ᵗʰ May 2021 – With a recent focus on space missions and space exploration going intergalactic, there’s a renewed interest in the solar system and astronomy. To help families learn about the solar system and inspire the next generation of space explorers, this International Astronomy Day (15th May 2021), Canon Europe has collaborated with TV presenter, author and world-class astronomer Mark Thompson, to share his tips connected to Canon’s Creative Park.
Celebrate International Astronomy Day with Canon Europe’s space-themed craft kits

London, UK – 14ᵗʰ May 2021 – With a recent focus on space missions and space exploration going intergalactic, there’s a renewed interest in the solar system and astronomy. To help families learn about the solar system and inspire the next generation of space explorers, this International Astronomy Day (15th May 2021), Canon Europe has collaborated with TV presenter, author and world-class astronomer Mark Thompson, to share his tips connected to Canon’s Creative Park.

2021 has already showcased remarkable human achievements, such as the landing of NASA’s Perseverance Rover on Mars and Space X’s continued Starlink Mission. With more news set to lift off this year, interest in space exploration has spiked, with Twitter citing a 41% increase in conversation around astronomy and the starsi.

Canon’s Creative Park has a wide selection of 3D space-themed paper kits, wall hangings and planetary stickers to get creative with. Available to download for free and print from home, Creative Park helps families learn about space in a fun and engaging way.

Highlight assets include:

Mark Thompson’s insightful astro tips include:
  • Be observant and see if you can spot history: The moon can be seen from all corners of Earth, and millions watched as Neil Armstrong and Buzz Aldrin became the first people to walk on its surface over fifty years ago. Canon’s Creative Park Apollo Lunar Modulevii is an iconic celebration of this historic achievement. But did you know that the site where Apollo 11 landed was called the Sea of Tranquillity? To spot the Sea of Tranquillity, familiarise yourself by finding a map of the moon, such as on NASA’s website and see if you can find it. It looks like a large grey patch on the lunar surface, but it isn’t actually a sea, it’s lava.
  • The sky is full of moving surprises: If you look carefully, you might notice certain stars which appear to be moving faster than others. These are not stars, but satellites. A great example is the International Space Station, a giant science laboratory where astronauts and scientists live, whilst performing experiments in space. In future years, there could be space holidays to places similar to Canon’s Creative Park Space Hotelviii, but for now at least, we can transport our imagination to what that would be like.
  • Imagine new frontiers: Our ancestors referred to planets as ‘planetes’, Latin for ‘wanderers’, on account of their strange movement among the stars. Did you know it is possible to see five planets simultaneously in the sky, including Mars, with the naked eye? Creative Park’s Mars Dioramaix will help you imagine what it would be like to stand on the surface of the red planet.
  • Map your journey: Mars is undoubtedly the next space destination humans will visit. The various rovers that have been mapping the surface, like Perseverance Rover which has just arrived, are essential in making this happen as we take our next step out among the stars. Send out a rover yourself using Creative Park’s Mars Curiosity Roverx.

To start your space journey, please visit: creativepark.canon/

For families eager to explore Creative Park’s space selection, Canon’s PIXMA range of inkjet printers make the perfect companion, thanks to its creative capabilities.

01 May 2021

Canon EOS 90D PDF User Guide / Manual Download

Canon EOS 90D PDF User Guide / Manual Download
Canon EOS 90D Owners Manual / User Guide - Download


Download Canon EOS 90D Camera PDF User Guide / Manual

Canon EOS 90D PDF User Guide Download
Canon EOS 90D PDF User Guide Download >>


Canon EOS 90D PDF User Guide / Manual Download


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