{"product_id":"metabones-leica-r-to-canon-rf-mount-speed-booster-ultra-0-71x-adapter-with-tripod-foot-black","title":"Metabones Leica R to Canon RF-Mount Speed Booster Ultra 0.71x Adapter with Tripod Foot (Black)","description":"\u003ch3\u003eMetabones Leica R to Canon RF-Mount Speed Booster Ultra 0.71x Adapter with Tripod Foot (Black)\u003c\/h3\u003e\n\u003cp\u003eOptical design:  advanced 5-element\/4-group optical design incorporating ultra-high index tantalum-based optical glass to achieve extraordinary optical performance with improved corner sharpness, distortion and reduced vignetting.\u003c\/p\u003e\n\u003cp\u003eLike the revolutionary original Metabones Speed Booster announced in January 2013, the Speed Booster Ultra has a magnification of 0.71x, and so it effectively reduces the crop factor of mirrorless cameras with DX-sized sensors(APS-C), such as Sony E-mount and Fujifilm X-mount cameras, from 1.5x to 1.07x.  However, the new Ultra design makes very effective use of exotic materials at the furthest limit of glassmaking technology, and as a result is well corrected for use with virtually all full-frame SLR lenses regardless of exit pupil distance. Thus, the Speed Booster Ultra performs extremely well with professional-grade f\/2.8 zoom lenses such as the 24-70mm f\/2.8 and 70-200mm f\/2.8 zooms by Canon and Nikon to produce 17-50mm f\/2.0 and 50-142mm f\/2.0 high-speed zooms, respectively.  Similarly, high-speed fixed focal length lenses such as a 50mm f\/1.2 will be transformed into a 35.5mm f\/0.9 lens with excellent contrast and resolution from the centre all the way to the edges of the image.\u003c\/p\u003e\n\u003ch3\u003eKey Features:\u003c\/h3\u003e\n\u003cp\u003eLeica R to Canon RF-Mount Adapter\u003c\/p\u003e\n\u003cp\u003eDesigned for APS-C Format Cameras\u003c\/p\u003e\n\u003cp\u003eCompatible with Canon C70, Red Komodo, EOS R Series\u003c\/p\u003e\n\u003cp\u003eIncreases Maximum Aperture by 1 Stop\u003c\/p\u003e\n\u003cp\u003eImproves MTF Performance\u003c\/p\u003e\n\u003cp\u003eLens Becomes 0.71x Wider\u003c\/p\u003e\n\u003cp\u003eAdvanced 5-Element\/4-Group Optical Design\u003c\/p\u003e\n\u003cp\u003eUltra-High Index Tantalum Optical Glass\u003c\/p\u003e\n\u003cp\u003eAluminium Alloy and Brass Construction\u003c\/p\u003e\n\u003cp\u003eChromium Plated with Satin Finish\u003c\/p\u003e\n\u003ch3\u003eWhat's in the Box:\u003c\/h3\u003e\n\u003cp\u003eMetabones Leica R to Canon RF-Mount Speed Booster Ultra 0.71x Adapter with Tripod Foot (Black)\u003c\/p\u003e","brand":"Metabones","offers":[{"title":"Default Title","offer_id":48247822549159,"sku":"GC47-MB-226","price":1064.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/4083\/0375\/files\/GC47-MB-226_1.jpg?v=1774613681","url":"https:\/\/www.georges.com.au\/products\/metabones-leica-r-to-canon-rf-mount-speed-booster-ultra-0-71x-adapter-with-tripod-foot-black","provider":"Georges Cameras","version":"1.0","type":"link"}