<p>The Canon EF 135mm f/2L USM is designed to meet the needs of a wide range of advanced amateurs and professionals. A ten element optical formula with two UD-glass elements serves to correct residual aberrations, resulting in superb sharpness and high image quality. It is also able to obtain superior background blur with the f/2 wide aperture. The EF 135mm f/2L USM is fully compatible for AF with Extenders 1.4x and 2x. A stellar portrait and available light lens.</p>
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<li>USM / Ultra Sonic Motor</li>
<li>Designed for EOS Cameras</li>
<li>UD/ Ultra-Low Dispersion Elements</li>
<li>Excellent Imaging Performance</li>
<li>Knurled Focusing Ring</li>
<li>Autofocus AF/ MF Manual Focus Modes</li>
<li>Selectable Focus Distance Range Switch</li>
<li>Depth of Field Scale</li>
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