| What Did You Heard About Canon EF-S 55 |
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| Written by Webmaster | |
| Friday, 12 February 2010 | |
By Eugen Nova EF-S sries of lenses from Caon, are exclusiely applicable to lenses Canon digital SLR cameras, such as: EOS 20D and the reebel moedls. Why? A key feature of the design objctives in accordance with APS-C image sensor with the image of the circle. How? This compparison is achived by reducing the distance between the back lens and the focal plane, thus redsucing the size of the image circle.
Result? Canon EF-S lneses are more effective in terms of: weight and cost of wide-angle lnses provide superior image qulity, resolution and contrst at all focal lengths. As a member of the EF-S lenses families, 17-85 F4 IS USM is a strong perorming wide-agnle to telephoto. Its list of features include: image stabilization for handheld situations and optically optimized for digital SLR cameras; ring USM is designed for fast and quiiet autofocusing. Full-Time manual foccus in AF mode is also a useful complement. EF-S 17-85mm f/4-5.6 IS USM lens providres a 5-fold zoom ratio and the agle of view equivalent to 27-136mm lens on a 35mm camear. Also preent in this lens glass aspherical lens with aspheroical surfaces on both siudes. As a result, excellent image quality at full zoom range. Focus Distance is impressive at a distance of 12 inches at all focal lengts. Finally, EF-S 17-85mm IS lens, compared with the EF 28-135mm lens IS, is 5% shorter and 12% lighter and takes 67mm filters. Here you can learn more about: Canon EF-S 55-250mm IS Lens review Thank you Tag it:                  |
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| Last Updated ( Friday, 12 February 2010 ) |
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