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Topic: Canon EF lens mount

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	Canon
		Canon's proprietary EF (electro-focus) lens, which combines a large-diameter fully electronic lens mount and an internal autofocus motor, was born in 1987.
		Canon's EF lens lineup, through the introduction of the latest innovative technologies, has consistently been recognized as the state of the art in the industry.
		Canon EF lenses span the gamut from ultra-wide 14mm to super-telephoto 600mm lenses and include standard and super-telephoto zoom models, large-aperture lenses, and TS-E lenses, which are equipped with a special tilt-shift mechanism that permits the manipulation of image perspective and distortion.
	www.canon.com /press/2006/ef_lens.html (400 words)

	Canon EF-S lens mount - Wikipedia, the free encyclopedia
		The EF-S lens mount is a derivative of the EF lens mount created for a subset of Canon digital single-lens reflex cameras with APS-C sized image sensors.
		The cameras that use the EF-S mount are: the Canon EOS 300D, 350D, 400D, 20D, 20Da, and 30D digital SLRs.
		This is because the increased proximity of the lens to the sensor means that on full-frame sensor or 35mm film EF cameras the lens itself would obstruct the mirror's movement and cause damage to the lens and/or camera.
	en.wikipedia.org /wiki/Canon_EF-S_lens_mount (467 words)

	500 vs 600
		Canon 600mm f/4L IS I tested the 600mm f/4 on a fall wildlife shoot in Yellowstone National Park in October, 2002 and then the 500mm f/4 just two months later on a workshop and shoot which I conducted at Bosque del Apache in December.
		One aspect of using such a large lens that needs to be borne in mind is the mount required.
		I have both, and frankly while the full-sized Wimberly is preferable, regardless of which sized lens you choose, it means either dedicating a tripod to it or facing the tedious and time consuming task of removing the head and replacing it with your usual ball head when you want to use shorter lenses.
	www.luminous-landscape.com /reviews/lenses/500vs600.shtml (1744 words)

	Canon EF 70 - 300mm f4.5-5.6 DO IS Test
		L — Canon's designation for their top-of-the-line lenses is the letter L. These lenses are the best that the company knows how to make at any given focal length and aperture, and of course for a given price (which in the case of L series lenses is usually high).
		The lens' finish is fl, with the green stripe first seen previously on the 400mm lens; the mark of a DO lens — the way that the red stripe is the sign of an L series lens.
		Zooming is via a rotating rubberized collar close to the lens mount, and because of the use of USM manual focus override can also be used at any time.
	www.luminous-landscape.com /reviews/lenses/Canon-70-300mm.shtml (1967 words)

	NEWS! - Canon announces new lenses, EF-S mount
		Canon, a leader in photographic and imaging technology, today releases the EF-S 18-55mm f/3.5-5.6 zoom lens, designed to work exclusively with the new EOS 300D, also released today.
		The new lens was therefore given a focal length of 18-55mm, which is equivalent to 29-88mm in the 35mm film format.
		A white lens mount index (in addition to the traditional red marking) differentiates the lens from other EF lenses and a rear rubber ring prevents any damage in the event that an inadvertent attempt is made to mount the EF-S lens on a camera other than the EOS 300D.
	www.imaging-resource.com /NEWS/1061402421.html (918 words)

	Two Canon EF-S lenses and a flash: Digital Photography Review
		Canon’s ring-type USM holds the lens with precision and accuracy, the instant it arrives at the correct focus point and without overshoot.
		Canon EF-S 17 - 85 mm IS USM
		Canon EF 70-200 mm F4L IS USM lens
	www.dpreview.com /news/0408/04081907canon_efs_flash.asp (1809 words)

	Canon EOS Beginners' FAQ III - Lenses
		EF means that the lens is of the Canon EF type.
		Canon sell a number of lenses in a special series they refer to as L for “luxury.” These are their most expensive and highest-quality lenses, and are readily identifiable by the red stripe painted around the end of the barrel.
		Canon also sell and have sold a number of prime (ie: non zoom) lenses with acceptable optics and average build quality (usually with noisy motor drives, metal mounts and distance scales), such as the 28mm 2.8 and 50mm 1.8 (metal lens mount).
	photonotes.org /articles/beginner-faq/lenses.html (15316 words)

	Amazon.com: Canon EF 135mm f/2L USM Lens for Canon SLR Cameras: Camera & Photo (Site not responding. Last check: 2007-10-11)
		The EF 135mm f2 L USM lens is compatible with extender 1.4x and 2x; these can increase your camera's focal length to 189mm f2.8 with extender 1.4x or 270mm f4 with extender 2x while still using the AF function.
		Canon ET-78II Lens Hood for EF 135mm f/2L USM & EF 180mm f/3.5L Macro USM Lenses
		Fantastic lens, very sharp, very handholdable, the focal length is terrific for portraits and the bokeh is very beautiful, equal in sharpness to the 85 1.2 or any of Canon's $5k lenses.
	www.amazon.com /Canon-135mm-USM-Lens-Cameras/dp/B000053HC5 (1940 words)

	Canon EOS Mount Camera Lens for Digital, 35mm, SLR, EF, from Tamron, Sigma, Tokina
		The Canon EF 70-300mm f/4-5.6 IS USM telephoto zoom lens has been developed to meet the high-performance standards that today's digital slr and 35mm photographers demand.
		Compared to the original Canon EF 75-300mm IS telephoto zoom lens, this lens has faster autofocus, and overall the Canon EF 70-300mm IS Zoom Lens is lighter and has a smaller diameter than the original.
		The Canon EF 70-300 IS USM telephoto zoom lens is ideal for both Digital and 35mm photography with most Canon EOS SLR Cameras including the 30D, 20D, 10D, Digital Rebel (all models), 5D, 1D, 1Ds, as well as the Elan and Rebel 35mm SLR Cameras.
	www.canogacamera.com /lenses_canonmount.aspx (864 words)

	Steves Digicams - Canon EOS D30 - Page 2
		The EF 22-55mm F/4 is a very lightweight and inexpensive lens to cover wideangle to normal focal lengths.
		The lens shown here is the Canon EF 28-135 IS zoom, it has an optical image stablization system so there is also a switch to enable or disable the stabilizer.
		The lens release is the large, fl button in the center of the mount.
	www.steves-digicams.com /d30_pg2.html (1142 words)

	Betterphoto.com Photography Q&A - Canon Lens
		The Canon EF lens mount is their standard Autofocus mount.
		The Canon EFS lenses are designed to work with EOS digital SLRs that have a digital sensor that is smaller than a 35mm film frame.
		EFS lenses project a smaller image onto the digital sensor than standard EF lenses do, so for that reason, they won't work well with film cameras or digital cameras that have full-size digital sensors.
	www.betterphoto.com /forms/QnAdetail.asp?threadID=26167 (201 words)

	Technology: EF Lens Mount
		With the elimination of mechanical connections and the incorporation of an electronic interface between the camera and lens, Canon cameras have greater flexibility with regard to incorporating future technologies and future system upgrades.
		The fully electronic mount system has none of the shock, operational noise, abrasion, play, lubrication requirements, slow response, diminished precision caused by lever operation, or design restrictions related to linkage mechanisms used to transfer data.
		Allows the development of super-fast, super-bright optics such as the EF 50mm f/1.0L USM, which was previously impossible to achieve with earlier lens mount systems.
	www.usa.canon.com /html/eflenses/technology/lensmount.html (374 words)

	Chris' Photography Pages: Review of the Canon EF 300mm f2.8 L lens
		The front edges of both the lens itself and the hood carry a rubber ring to protect surfaces it may be placed on or against.
		Instead, near the mount is a filter holder that can be withdrawn from the lens barrel to allow the use of gel filters (a gel holder is supplied), screw-in filters or a rotateable polarising unit.
		The Canon EF lens mount has no mechanical control connection between body and lens - all signals for focus, aperture, etc., plus information the flash system uses like zoom settings - are transmitted electronically.
	met.open.ac.uk /group/cpv/PHOTO/EF300_28L.html (835 words)

	35mm lens opinions needed (EF or ?) - The Digital Video Information Network
		I have a Canon SLR with various EF lenses, I understand that the aperature is adjusted electronically with the EF and would be "wide open" on a 35mm adapter.
		EF mount is the most versatile mount out there at the moment as it can take almost any 35mm lens out there except Canon`s own FD.
		A Nikon mount, which is supplied with the Peleng lens but is not fitted up to the lens, is the same as that which fits up to the MTO (Jupiter) 1000mm f10.5 mirror lens.
	www.dvinfo.net /conf/showthread.php?t=77655 (743 words)

	DCRP Review: Canon Digital Rebel
		Using the included lens at ISO 100, the range is 0.7 - 3.7 m at wide-angle, and 0.7 - 2.2 m at telephoto.
		Over to the upper-left of the lens mount is the redeye reduction lamp, which doubles as the self-timer lamp.
		The tripod mount is inline with the lens, as you'd expect.
	www.dcresource.com /reviews/canon/eos_300d-review/index.shtml (4335 words)

	650-1300mm Telephoto Zoom Lens for Canon EOS Mount / EF - Page 23 - Canon Digital Photography Forums
		Re: 650-1300mm Telephoto Zoom Lens for Canon EOS Mount / EF
		Canon EF 100-400mm f/4.5-5.6 L IS USM Telephoto Zoom Lens.
		Canon EOS EF 100-300mm Zoom Lens 1:5.6 with macro
	photography-on-the.net /forum/showthread.php?p=917169 (964 words)

	Canon EOS 5D Review: 1. Introduction: Digital Photography Review
		Canon's press material for the EOS 5D states that it 'defines (a) new D-SLR category', while we're not typically too concerned with marketing talk this particular statement is clearly pretty accurate.
		The EOS 5D is unlike any previous digital SLR in that it combines a full-frame (35 mm sized) high resolution sensor (12.8 megapixels) with a relatively compact body (slightly larger than the EOS 20D, although in your hand it feels noticeably 'chunkier').
		While Canon don't specifically refer to the EOS 5D as a 'professional' digital SLR it will have obvious appeal to professionals who want a high quality digital SLR in a body lighter than the EOS-1D.
	www.dpreview.com /reviews/canoneos5d (489 words)

	Amazon.com: Lensbaby 2.0 Selective Focus SLR Lens for Canon EF Mount: Camera & Photo (Site not responding. Last check: 2007-10-11)
		The Lensbaby 2.0 is a second-generation selective-focus SLR camera lens, bringing brighter, sharper, and faster selective focus photography to professional and avid amateur photographers.
		The shooter focuses a Lensbaby using the same general principle used with a bellows camera, by moving the focusing collar in and out with his or her fingertips.
		The Canon Rebel XTi (EOS 400D) is Canon's latest offering in the digital SLR market and is an upgrade and...
	www.amazon.com /Lensbaby-Selective-Focus-Canon-Mount/dp/B000GAB350 (1426 words)

	Canon EF 28-200mm f/3.5-5.6 USM Lens Sample Photos and Specifications
		Canon EF 28-200mm f/3.5-5.6 USM Lens Sample Photos and Specifications
		Canon EF 28-200mm f/3.5-5.6 USM Lens Sample Photos
		Lens Mount: EF Random Canon EF 28-200mm f/3.5-5.6 USM Samples from 1406 available Photos more
	www.pbase.com /cameras/canon/ef_28200_35u (103 words)

	Steves Digicams - Canon EOS-1Ds Mark II Pro SLR - User Review
		The EOS-1Ds Mark II is fully compatible with most Canon lenses (except the EF-S type) thanks to its Canon-EF lens mount.
		The focal length of lenses used on the EOS-1Ds are the same focal length as lenses used on EOS 35mm film cameras.
		Canon's world-renowned lineup of professional EF lenses includes over 50 models ranging from fish-eye to 1,200mm super-telephoto.
	www.steves-digicams.com /2005_reviews/1dsm2_pg2.html (1504 words)

	EOS (SLR) Camera Systems - Digital EOS Cameras - 35mm EOS Cameras - Lenses - Flashes - Canon USA Consumer Products
		EF 28-80mm f/3.5-5.6 II EF 28-90mm f/4-5.6 II USM
		EF 80-200mm f/4.5-5.6 II EF 75-300mm f/4-5.6 III USM
		EF 50mm f/1.8 II EF 85mm f/1.2L II USM
	www.usa.canon.com /eflenses/technology/lensmount.html (170 words)

	Canon EOS 1Ds Mark II Digital Camera
		Canon's Evaluative Through-The-Lens (E-TTL II) auto-flash system gives the EOS-1Ds Mark II a distance-linked precision flash system that is accurate and reliable in all conditions.
		The EOS-1Ds Mark II is EF lens and EX-series Speedlite compatible.
		Digital Single Lens Reflex (DSLR) camera owners are plagued by sky cooties, UFO’s, or other undesirables imbedded in their digital images.
	www.pictureline.com /product.php?id=376 (915 words)

	Canon EF lens mount - Wikipedia, the free encyclopedia
		However, many users find these lenses to be cheaper, and sometimes superior alternatives to Canon lenses.
		The most recent improvement is used in the 70-200 f/4L IS USM, which allows up to four stops of stabilization.
		Most recent L lenses have sealing to help resist dust and water.
	en.wikipedia.org /wiki/Canon_EF_lens_mount (1544 words)

	Canon EF 50mm f/1.8 II Reviews - PopPhoto
		Canon EF 50mm f/1.8 II Reviews - PopPhoto
		The lightest EF lens of all at a mere 0.29 lb.
		The color balance is excellent for a standard lens.
	www.popphoto.com /lensreview/canon-ef_50mm_f_._1.8_ii.html (73 words)

	Sigma 14mm 2.8 Canon EF mount lens for sale - Wetpixel :: Underwater Photography Forums
		Sigma 14mm 2.8 Canon EF mount lens for sale - Wetpixel :: Underwater Photography Forums
		Canon D60 -butt load of lenses and a UK Germany Housing
		Yes it is the EX - AKA Canon EF lens
	www.wetpixel.com /forums/index.php?showtopic=1697 (209 words)

	SOLD: Quantaray 100-300mm AF zoom lens (Canon EF mount) - Digital Grin
		Quantaray 100-300mm f/4.5-6.7 autofocus zoom lens (Canon EOS "EF" mount)
		I used it just one time, whilst saving up to snag a new, longer-reach lens.
		The Quantaray is light to carry and use.
	www.dgrin.com /showthread.php?t=8036 (135 words)

	Camera Hacker
		auto-focus with Canon 100-400mm lens and 1.4x teleconverter
		Some thoughts on the Canon 28-135mm f/3.5-5.6 Image Stabilizer Untrasonic lens
		Some thoughts on the Canon 75-300mm f/4-5.6 II USM lens
	www.camerahacker.com /Forums/Lens/Canon (47 words)

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