A Canon Extender is a top notch teleconverter that preserves the picture quality of the lens it's mounted to and increases its focal length. At the point when combined with pro level EOS cameras & EF super-telephoto lenses featuring image
stabilization and are resistant to extreme weather, accomplished because of rubber gasket seals. Enhanced anti-reflective coatings serve to additionally increase transmissivity and performance in backlit situations.
Canon EF telephoto extenders have been available for EOS photographers since the beginning of the EOS system in the late1980s. Presently in their
third generation, the Canon EF 1.4x III and the EF 2x III Extenders are popular with many professional photographers and numerous advanced amateur shooters. Many of you might want to reconsider adding EF extenders to your camera bag with the recent announcement of firmware updates for the Canon EOS-1D X and Canon EOS 5D Mark III cameras, which will allow AF with a lens/extender combination a shutter speed as s slow as f/8. Extenders can be good for certain possibilities for the professional photographer or give the serious enthusiast.
One immense thing is the means by which one or both EF Extenders can change what a lens can accomplish in many situations and While a few users consider an extender to be a frill that they'll add on uncommon events, others respect their lens and extender combination as standard gear, and who take the extender off principally to change the lens into a , shorter length, faster telephoto when that is what's required.
Canon EF Extenders and Super-Telephoto Lenses
These are the lenses many EOS shooters think of using extenders, and it's undeniable the reason to take an already powerful lens, such as a Canon EF 500mm f/4L IS II USM or Canon EF 600mm f/4L IS II USM, and further extend its telephoto power for moderate expense and essentially no size or weigh increase and with obvious appeal to nature, wild life and a some sports shooters. The greater part of Canon's fixedl length super-telephoto lenses, from 300mm upward, are compatible with every version of the 1.4x and 2x tele Extenders. Also, considering their modest expense, an EF 1.4x or perhaps a 2x Extender is a simple purchasing choice for shooters putting resources into super-tele lenses.
Be that as it may, for many shooters, the concealed practicality of the extenders is the thing that happens when they're combined with less obvious Canon EF lenses.
Multiply the focal length of your 135mm or more lens by 1.4x without giving up picture quality using the Canon EF 1.4x II extender. Optically great, the extender fits all Canon 135mm fixed focal length lenses with the exception of the 135mm f/2.8 Softfocus lens), the EF 70-200mm f/2.8L, EF 70-200mm f/2.8L, 70-200mm f/4.0L, EF 70-200mm f/4.0L IS USM, and EF 100-400mm f/4.5-5.6L IS zoom lenses. Furthermore, the extender doesn't sacrifice the autofocus on any EOS camera insofar as it's combined with a lens having a f/4 or larger maximum aperture (the extender lowers the effective aperture by one f-stop). The good news is, this version keeps exceptional optics of the prior incarnation, and also includes weather resistance and enhanced anti-reflective surfaces inside the barrel. The EF 1.4x II extender measures 2.9 inches in distance across and 1.1 longth in length, and weighs 7.8 ounces.
1.4x telephoto extender for multiplying focal lengths of Canon 135mm or longer lenses. Fits every one of the 135mm or longer fixed focal length lenses and several 70-200mm telephoto zooms. Preserves autofocus on any Canon EOS camera when combined with f/4 or quicker lens. Weather resistant and enhanced anti-reflective interior barrel surfaces
Canon EF 2X II Extender . Created to double the focal length of any suitable Canon EF lens, the EF 2x II extender is perfect for nature photography and sporting events. The extender features a new seven-element layout, along with the identical weather-resistant and anti-reflective internal barrel construction as the EF 1.4x II extender. Just as significant, the extender handles autofocus with any EOS body provided the attached lens has an f/2.8 or larger maximum aperture (the EF 2x II reduces two stops of effective aperture). The EF 2x II--which also keeps an EOS camera's
Image Stabilization components and carries a one-year warranty.
Magnification: 2.0x Lens construction: 7 elements in 5 groups Dimensions: 2.8
inches in diameter and 2.3 inches long Weight: 9.3 ounces.