Canon EF 1.4X II Extender Telephoto Accessory
by Canon
Digital product summary information
Manufacturer: CanonModel: 6845A004
Product features:
- 1.4x telephoto extender for multiplying focal length of Canon 135mm or longer lenses
- Fits all 135mm or longer fixed focal length lenses and some 70-200mm telephoto lenses
- Preserves autofocus on any EOS camera when combined with f/4 or faster lens
- Weather-resistant construction and improved anti-reflective surfaces in the barrel
- Measures 2.9 inches in diameter and 1.1 inches long; weighs 7.8 ounces
- Adorama Slinger Soft Lens Case Small, 5" High x 86mm Diameter, Black.
- LensCoat Lens Cover for the Canon 1.4x and 2x Tele Extender Set - Realtree Advantage Max4 (hws)
- LensCoat Lens Cover for the Canon 1.4x and 2x Tele Extender Set - White (cw)
- LensCoat Lens Cover for the Canon 1.4x and 2x Tele Extender Set - Black
- LensCoat Lens Cover for the Canon 1.4x and 2x Tele Extender Set - Realtree Hardwoods Snow (hws)
Digital camera reviews of Canon EF 1.4X II Extender Telephoto Accessory
Digital camera Review: Another Good Canon Product
Summary: 4 Stars
Got this to go with my 70-200L 2.8 IS lens which this is perfect for my shooting needs. Gives the added extension to the lens on my 5D and still maintains the image stabilizing and AF function. Canon did design this to fit only specific Canon lenses.
I tried it on my Sigma 50-500 and the outerbarrel of the TC will not fit inside of the Sigma.
Otherwise the TC was pretty sharp at least my copy is .
Summary of Canon EF 1.4X II Extender Telephoto Accessory
Attaching this high performance Extender to a 135mm or longer lens, or to the EF 70-200mm f/2.8L boosts the focal length by 1.4 times. With five elements in four lens groups, it preserves the prime lens' image quality.Multiply the focal length of your 135mm or longer lens by 1.4x without sacrificing image quality with the Canon EF 1.4x II extender. Optically superb, the lens fits all Canon 135mm fixed focal length lenses (except the 135mm f/2.8 Softfocus lens), along with the EF 70-200mm f/2.8L, 70-200mm f/2.8L, 70-200mm f/4.0L, 70-200mm f/4.0L IS USM, and 100-400mm f/4.5-5.6L IS zoom lenses. In addition, the extender doesn't sacrifice your autofocus on any EOS camera as long as it's combined with a lens having an f/4 or faster maximum aperture (the extender reduces the effective aperture by one f-stop). Best of all, this version maintains the outstanding optics of the earlier incarnation, but adds a weather-resistant construction and improved anti-reflective surfaces in the barrel. The EF 1.4x II extender, which measures 2.9 inches in diameter and 1.1 inches long, weighs 7.8 ounces.
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