Canon recently has developed Blue Spectrum Refractive (BR), a new optical element for use in camera lenses that corrects chromatic aberrations at an extremely high level to achieve superb imaging performance.
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Canon finally announced the latest second generation wide-angle prime lens EF 35mm F1.4L II USM and now it became the world’s first company who implemented the Blue Spectrum Refractive Optics (BR Optics) technology on the lens.
Such type of technology will definitely support the lens to focus all colors to the same convergence point and reduce the chromatic aberration magnificently compare to other present technology. It will be beneficial for the production of high –quality images of the sujects subject with superb imaging performance.
The lens consists of 14 elements in which two of them are aspherical and the other is ‘Super UD’. It has 9 aperture blades which support the production of bokeh and offers a minimum focusing distance of 0.28m/11in. It has dust and water-resistant body.
The users will get the Canon EF 35mm F1.4L II USM in October, 2015 at the cost of $1,799.
Press Release after the break
CANON U.S.A. INTRODUCES NEW CANON EF 35MM F/1.4L II USM LENS
New L-Series Lens is First to Feature Canon’s Proprietary Blue Spectrum Refractive Optics – That Achieves a Higher Level of Chromatic Aberration Correction For Superb Image Quality
MELVILLE, N.Y., August 27, 2015 – Canon U.S.A., a leader in digital imaging solutions, today introduced the new EF 35mm f/1.4L II USM lens for EOS system cameras – a wide-angle fixed-focal-length Canon EF lens that is the world’s first* to utilize the Company’s newly-developed and exclusive Blue Spectrum Refractive Optics (BR Optics). This new optical technology utilizes organic material newly developed by Canon to achieve a higher level of chromatic aberration correction than other existing technologies resulting in outstanding high-quality imaging performance.
“As the world leader in production of interchangeable lenses, having produced over 110 million EF lenses since 1987, it is with great excitement that we now introduce a revolutionary new technology to add to Canon’s unequaled optical heritage when it comes to chromatic aberration correction,” said Yuichi Ishizuka, president and COO of Canon U.S.A., Inc. “We continually strive to achieve the ideal lens performance, which has driven the development of Blue Spectrum Refractive Optics, found in the new EF 35mm f/1.4L II USM lens. This technology is yet another ‘first’ in optical design introduced by Canon to enhance the performance of our lenses for our customers.”
Canon’s proprietary Blue Spectrum Refractive Optics (BR Optics) incorporate a new organic optical material with unique anomalous dispersion characteristics for use in camera lenses. The molecular design of BR Optics refracts blue light (short wavelength spectrum) to a greater degree than other existing optical technologies including UD glass, Super UD glass and Fluorite, to control color fringing as effectively as possible. When placed between convex and concave lens elements made from conventional optical glass materials, BR Optics help to produce sharp images with outstanding contrast and color fidelity by thoroughly reducing axial chromatic aberration.
In addition to BR Optics, the new lens incorporates two aspherical elements and one UD glass element in a 14 element, 11 group optical formula. The EF 35mm f/1.4L II USM lens also features Canon’s proprietary Sub-Wavelength Structure Coating (SWC), applied to the rear surface of the first and second aspheric lens elements to help combat flare and ghosting caused by light rays entering the lens at a large angle of incidence. The lens also offers best in class minimum focusing distance at 0.28m (approximately 11 inches) resulting in an increased maximum magnification of 0.21x – ideal for capturing close-up subjects. Autofocusing is swift and virtually silent due to a rear-focus optical system and Canon’s original Ring USM focusing motor. Full-time mechanical manual focusing is also available even when the lens is set to AF mode.
The Canon EF 35mm f/1.4L II USM lens features improved durability over its predecessor. As with all L-series lenses, this new lens is highly resistant to dust and water ─ making it ideal for outdoor photography, even in harsh conditions. The high-grade design of the lens provides users with a substantial and luxurious feel, as well as optimal operability. In addition, a fluorine coating on the front and rear lens surfaces helps to repel liquids and dust particles, and makes the lens easier to clean.
Pricing and Availability
The new Canon EF 35mm f/1.4L II USM lens is compatible with 72mm filters and will be supplied with Lens Hood EW-77B and Lens Pouch LP1219. It is scheduled to be available in October 2015, for an estimated retail price of $1,799.00. For more information including specifications and an MTF chart, please visit http://www.usa.canon.com/cusa/professional/products/lenses/ef_lens_lineup/lens_wide_pro.
CANON DEVELOPS NEW CAMERA-LENS OPTICAL ELEMENT THAT ENABLES EXTREMELY HIGH LEVELS OF CHROMATIC ABERRATION CORRECTION
MELVILLE, N.Y, August 27, 2015 – Canon U.S.A., Inc., a leader in digital imaging solutions, today announced that its parent company, Canon Inc., has developed Blue Spectrum Refractive (BR), a new optical element for use in camera lenses that corrects chromatic aberrations at an extremely high level to achieve superb imaging performance.
The new Canon-developed BR optical element offers characteristics that significantly refract blue light, which lies within the short-wavelength range, to achieve impressive levels of chromatic aberration correction for outstanding imaging performance. The BR optical element, positioned between two glass lens elements to create a BR lens, will make its debut in the new EF 35mm f/1.4L II USM wide-angle fixed-focal-length lens, which is scheduled to go on sale in October 2015.
Natural light, or white light, comprises a spectrum of wavelengths, or colors, each of which realizes a unique refractive index when passing through a lens. As all colors do not converge on the same point, this disparity causes chromatic aberrations, or color fringing, to occur in an image.
Canon develops optical elements by reviewing organic optical materials, beginning with the design of molecular structures, with the aim of achieving optimal chromatic aberration correction that suppresses color fringing. With the successful development of the BR optical element, which offers unique light-dispersion characteristics that significantly refract blue light—a wavelength that, until now, had proven particularly difficult to converge to a specific focal point—Canon is able to develop lenses that result in outstanding imaging performance by correcting chromatic aberrations at an exceptionally high level.
*As of August 27, 2015
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