what do the colored rings on canon lenses mean
to identify Canon 's lenses
usually have an off-white barrel to reduce heat absorption under the sun that may otherwise affect the performance of the lens, as well as to identify Canon's lenses (for example at sporting events), though these can be confused with Sony A and Pentax K-mount lenses which are also offered in (pure) white. However, shorter focal length L-lenses can be black (such as the Canon EF 24–70 mm f/2.8L) and all L-lens primes under 200 mm are black. L-lenses can be identified by the distinctive red ring on the lens barrel. The off-white colour of the lens barrel is not exclusive
Canon L lens
usually have an off-white barrel to reduce heat absorption under the sun that may otherwise affect the performance of the lens, as well as to identify Canon's lenses (for example at sporting events), though these can be confused with Sony A and Pentax K-mount lenses which are also offered in (pure) white. However, shorter focal length L-lenses can be black (such as the Canon EF 24–70 mm f/2.8L) and all L-lens primes under 200 mm are black. L-lenses can be identified by the distinctive red ring on the lens barrel. The off-white colour of the lens barrel is not exclusive
Canon L lens
superior channel separation, since each channel's movements appear on a separate axis. Moving magnet cartridges are more commonly found at the 'lower-end' of the market, while the 'higher-end' tends to be dominated by moving coil designs. The debate as to whether MM or MC designs can ultimately produce the better sound is often heated and subjective. The distinction between the two is often blurred by cost and design considerations - e.g. can an MC cartridge requiring another step-up amplification outperform well made MM cartridges that need simpler front-end stages? MM cartridges generally have output of 3-6mV, compatible with the MM
Magnetic cartridge
Republican candidates, Craig Allen, Nathan Dahm, Fran Moghaddam, Kenneth Rice, Patrick K. Haworth and Independent Angelia O'Dell all have filed to run against Sullivan. Sullivan entered the Betty Ford Center in California to receive treatment for his addiction to alcohol on May 28, 2009. This district is represented by Democrat Dan Boren. Democrat Jim Wilson and Republicans Daniel Edmonds, Charles Thompson, Chester Clem Falling, Daniel Arnett, Howard Houchen, and Raymond Wickson all filed to run against Boren. Despite the poor approval ratings of Obama, of whom 27% in this district approve, and the high unpopularity of the Democratic healthcare bills,
2010 United States House of Representatives elections in Oklahoma
Taliban blew the Buddha up, believing it to be idolatrous. During the First Anglo-Afghan War, the city was stormed and taken over by the British forces on July23, 1839 in the Battle of Ghazni. The Civil war in Afghanistan and the continued conflict between the Taliban and the Northern Alliance during the 1990s put the relics of Ghazni in jeopardy. Ghazni's strategic position, both economically and militarily, assured its revival, albeit without its dazzling former grandeur. Through the centuries the city has figured prominently as the all-important key to the possession of Kabul. After the 2001 invasion of Afghanistan, the
Ghazni
not always in optical spectra. The temperature is equally uncertain, with contradictory excitation strengths in the spectrum. A simple colour correlation temperature fit gives temperatures around 3,750 K, while a full spectrum fit gives a temperature of 5,000 K. The distance to RW Cephei has been estimated on the basis of its spectroscopic luminosity and is assumed to be a member of the Cepheus OB1 association at 3,500 parsecs, consistent with the parallax from Gaia Data Release 2. The temperature intermediate between the red supergiants and yellow hypergiants, and itself varying considerably, has led to it being variously considered as
RW Cephei
Bull Creek, Missouri Bull Creek is a village in Taney County, Missouri, United States. The population was 603 at the 2010 census. It is part of the Branson, Missouri Micropolitan Statistical Area. Bull Creek is located at (36.714491, -93.203054). According to the United States Census Bureau, the village has a total area of , all of it land. As of the census of 2010, there were 603 people, 199 households, and 162 families residing in the village. The population density was . There were 235 housing units at an average density of . The racial makeup of the village was
Bull Creek, Missouri
photography is important as a historical source of information about people. The Creative Approach is where digital manipulation (and formerly darkroom manipulation) is brought to bear to produce wonderful pictures of people. It is becoming a major form of portraiture as these techniques become more widely understood and used. Lenses used in portrait photography are classically fast, medium telephoto lenses, though any lens may be used, depending on artistic purposes. See Canon EF Portrait Lenses for Canon lenses in this style; other manufacturers feature similar ranges. The first dedicated portrait lens was the Petzval lens developed in 1840 by Joseph
Portrait photography
Having a maximum aperture of 5.6, it is relatively slow. The 400mm 4 DO IS II USM, which replaced an earlier version of the same lens in 2014, is one of only two Canon lenses that make use of diffractive optics (the other is the Canon EF 70-300mm lens). The use of diffractive optics allows the lens to be significantly lighter than it might otherwise be. These lenses are compatible with the Canon Extender EF teleconverters. Canon 400 mm f/2.8 L IS II USM lenses are used in the Dragonfly Telephoto Array. The array is designed to image objects with
Canon EF 400mm lens
To support this new lens, some of Canon cameras needed a new firmware. Canon EF 70–300mm lens The EF 70–300mm lenses are a series of telephoto zoom lenses made by Canon Inc. They have a Canon EF lens mount to work with the EOS line of cameras. Four Canon EF telephoto zoom lenses carry the 70–300mm designation. All versions offer image stabilization (IS) and ultrasonic motor drive (USM) and have nearly the same maximum aperture of 4/4.5 to 5.6 over their entire focal range. This lens makes use of Canon's Diffractive Optics rather than a traditional lens of wholly refractive
Canon EF 70–300mm lens
Canon EF 300mm lens The EF 300mm lens refers to a family of telephoto prime lenses made by Canon, five of which have been sold to the general public and one of which was only made on special order. The lenses have an EF type mount which fits the Canon EOS line of cameras. When used on a digital EOS body with a field of view compensation factor of 1.3x, such as the Canon EOS-1D Mark IV, it provides a narrow field of view, equivalent to a 390 mm lens mounted on a 35mm frame body. With a 1.6x body
Canon EF 300mm lens
partial macro-like photography using this lens. Canon EF 100mm lens The Canon EF 100 mm lenses are used for Canon DSLR cameras. There are four different types of EF 100 mm lens for Canon. Certain lenses are best for macro photos, whereas other lenses are good for taking pictures of subjects from a distance. The EF 100 mm 2.8 Macro USM lens is a prime lens made by Canon Inc. It is of the EF lens mount that fits the EOS camera system. There are three versions, the original, a second that adds a USM autofocus motor, and a recently
Canon EF 100mm lens
to identify Canon 's lenses
Title: Canon L lens. Content: usually have an off-white barrel to reduce heat absorption under the sun that may otherwise affect the performance of the lens, as well as to identify Canon's lenses (for example at sporting events), though these can be confused with Sony A and Pentax K-mount lenses which are also offered in (pure) white. However, shorter focal length L-lenses can be black (such as the Canon EF 24–70 mm f/2.8L) and all L-lens primes under 200 mm are black. L-lenses can be identified by the distinctive red ring on the lens barrel. The off-white colour of the lens barrel is not exclusive
Tolerance markings
Tolerance markings
The colored rings on Canon lenses mean the following: The first letter, 'U', represents the factory that made the lens. The second letter, 'V', represents the year of manufacture. The next two digits represent the month the lens was manufactured. The last two digits are for internal Canon use. Therefore, the example (\"\") of \"UV0512\" means the lens was made in the Utsunomiya, Japan factory in May 2007. The colored rings on Canon lenses are
focal length
The colored rings on Canon lenses mean the following: The first letter, 'U', represents the factory that made the lens. The second letter, 'V', represents the year of manufacture. The next two digits represent the month the lens was manufactured. The last two digits are for internal Canon use. Therefore, the example (\"\") of \"UV0512\" means the lens was made in the Utsunomiya, Japan factory in May 2007. The colored rings on Canon lenses are
focal length