title_left:  "Metabones Canon EF to Micro Four Thirds T Speed Booster ULTRA 0.71x (Black Matt)"
description_left:  Leica R 15/3.5) have rear protrusions (spikes and durability. The lens side of the adapter features a strong leaf-spring structure as result achieves an astonishing level performance that sets new standard for focal reducers. <br /> Like revolutionary original Metabones Speed Booster&reg; announced in January 2013 sans-serif; font-size: 14px; font-style: normal; font-variant: font-weight: letter-spacing: line-height: 19.6px; text-align: justify; text-indent: 0px; text-transform: none; white-space: word-spacing: background-color: #ffffff;"> <tbody> <tr style="border: 1px solid #cccccc; border-collapse: collapse;"> <td collapse; 9pt; vertical-align: top; left; width: 180px;"> <h1 style="margin: padding-top: 2px; 12pt; nowrap;"><span style="color: #000000;">Leica R</span></h1> <p 0.5em; padding-bottom: 0.5em;"><span #000000;">Super-Elmar-R 15mm<br Elmarit 28/2.8<br 35/2.8<br Summicron 50/2<br &nbsp;</span></p> </td> 179px;"> #000000;">Nikon F</span></h1> #000000;">20/2.8 AI-S</span></p> #000000;">Olympus OM</span></h1> #000000;">OM 18/3.5<br OM 21/2<br 21/3.5<br 50/1.8</span></p> #000000;">Pentax K</span></h1> #000000;">Every Pentax K-mount has protruding fin aperture lever. It does NOT fit.</span></p> </tr> </tbody> </table>" subject to certain limitations (see table above details). We are pleased report Panasonic Micro Four Thirds camera bodies capable autofocusing accurately even if maximum Booster combined is sub-f/1.0 range. Although our first foremost priority accuracy we instead take no short-cut but use precision-machined brass with chromium plating on both camera-body sides adapters levers ULTRA m43 uses advanced 5-element 4-group optical design incorporating ultra-high index tantalum-based glass. However #ffffff; justify;"><span #000000;"><strong>List manual focus lenses which REQUIRE MODIFICATION be used Booster</strong></span></h3> <span #000000;"> </span> <h3 1em; font-family: Arial great appearance able make strides autofocus speed well. <em><br Autofocus Lens Compatibility List </em><br <em>The following lists been tested. Other not listed here typically works well "<span #000000;">Since its inception order ensure smooth mounting left;"> style="text-decoration: underline; color: #000000;"><strong>Inaccurate</strong></span></p> #000000;">Canon EF 50mm f/1.8 II<br Sigma f/1.4 EX HSM<br Tamron SP 24-70mm f/2.8 Di VC USD A007<br 28-300mm f/3.5-6.3 XR A20<br 70-200mm A009</span></p> #000000;"><strong>Manual only</strong></span></p> #000000;"><strong>Not supported</strong></span></p> #000000;">Contax N modified by Conurus<br 17-50mm B005<br Zeiss ZE lenses</span></p> #000000;">Focus confirmation "chips"</span></p> </table> #000000;"><strong>Accurate only newer cameras such G7 GX8 </strong><br &bull; Canon f/4L USM (non-IS) 135mm f/2L 200mm f/2.8L II 300mm IS USM<br <strong>Manual Focus Some improperly-made M42 screw mount may short electronic contacts cause damage and/or body. "chips" Dandelion incompatible. Many (e.g. 28/2.8 Consistency Reliability New Mount support 600px; #ffffff;" /><br <strong> Always Enhance Never Degrade Performance Attached Master series Sony E-mount designing manufacturing recognized among professionals enthusiasts leaders workmanship. Contrary popular trend other factories using aluminum ring painted black camera-body-side strengthening adapter-lens connection ensuring tightness reduce wear prevent errors alignment issues from appearing. matte-black treatment keep internal reflection minimum maintain quality possible lens. All Adapters follow this tradition uncompromising precision appendages) would optics housing Booster. They need before they can safely Check sure there adapter/lens combination Scratches damages caused covered warranty.<br #000000;"><strong>Accurate</strong><br </span>&bull; 8-15mm Fisheye 20-35mm f/3.5-4.5 24-105mm 28-80mm f/3.5-5.6 35-80mm f/4-5.6 40mm STM f/1.2L 70-300mm f/4-5.6L 85mm 100mm Macro 100-400mm f/4.5-5.6L Extender 1.4x III 2x 18-35mm DC Art 18-125mm f/3.8-5.6 HSM f/4 Tokina AT-X PRO 11-16mm DXII</span><br <strong>Tested community makes very effective exotic materials at furthest limit glassmaking technology specifically optimized sensor filter stack robust build outstanding finish. Our Smart AdapterTM products add industry-leading interfacing Canada too.</em></span><br style="font-size: 12px; 16.8px; display: inline ! important; float: Helvetica 50/1.8 thanks!</strong><br #000000;">&bull; (Mark I) f/2.0L 400/2.8L I)<br <table cellspacing="0" cellpadding="3" true control lens' directly body.<br <strong>Select correct EF-MFT fits your camera: <img alt="" src="http://www.metabones.com/assets/a/stories/CompatibilityMTF.png" style="font-family: #000000;"><strong>-</strong></span></h3> so it effectively reduces crop factor mirrorless 2.0x 1.4x. almost perfectly corrected all fullframe SLR regardless aperture. will also work extremely many DX APS-C format provided image circle large enough. Optical Boosters good MTF any attached improved. Even latest generation Otus improved adding m43. <strong>Autofocus Optimum Balance Accuracy magnification 0.71x
title_right:  "Canon EF 300 mm f4.0 L USM IS" "Product data Canon IS camera lenses (2530A005)"
description_right: "
                                      Long product name Canon EF 300 mm f4.0 L USM IS
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                      The short editorial description of Canon EF 300 mm f4.0 L USM IS
                      
                      EF 300 mm f4.0 L USM IS
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                               Canon EF 300 mm f4.0 L USM IS:
                              The official marketing text of Canon EF 300 mm f4.0 L USM IS as supplied by the manufacturer
  
                              This lens is an EF 300mm f/4.0L USM.
   
   
  Features
   
  Diagonal Angle of View: 8° 15' Lens Construction (elements/groups): 8/7 No. of Diaphragm blades: 8 Minimum Aperture: 32 Closest Focusing Distance (m): 2.5 Maximum Magnification (x): 0.13 AF Actuator: USM Filter Diameter (mm): 77
   
   
  Compact L-series telephoto lens with an Image Stabilizer that compensates for camera shake with the equivalent effect of a shutter speed two stops faster
   
   
  A more portable 300mm telephoto lens. Two UD-glass elements effectively correct secondary spectrum. Superb resolution and contrast. Astigmatism is also corrected, and background blur is soft and nice. Built-in hood with a locking mechanism.
  
                          
                      
                                                  
                                              
                              Short summary description Canon EF 300 mm f4.0 L USM IS:
                              This short summary of the Canon EF 300 mm f4.0 L USM IS data-sheet is auto-generated and uses the product title and the first six key specs.
                              Canon EF 300 mm f4.0 L USM IS, 8/7, 3.54" (9 cm), 8.6°, 3.03" (7.7 cm), 2.58 lbs (1.17 kg), 0.13x
                          
                                                                  
                              Long summary description Canon EF 300 mm f4.0 L USM IS :
                              Canon EF 300 mm f4.0 L USM IS. Lens structure (elements/groups): 8/7, Thread diameter: 3.54" (9 cm), Diagonal angle of view (max): 8.6°. Filter size: 3.03" (7.7 cm), Weight: 2.58 lbs (1.17 kg). Magnification: 0.13x
                              This is an auto-generated long summary of Canon EF 300 mm f4.0 L USM IS based on the first three specs of the first five spec groups.
  
  
                          
                                      
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