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Metabones has released a Canon EF to RF speed booster to reduce the EOS R 4K crop factor

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It might seem strange to produce a speed booster that converts full-frame lenses to full-frame. But with the Canon EOS R and EOS RP mirrorless cameras, when you’re shooting 4K video, you’re not exactly using the entire full-frame view of the sensor. The Canon EOS R has about a 1.75x crop factor, and the EOS RP has a 1.64x crop factor (similar to APS-C).

The new Metabones EF-RF Speed Booster ULTRA 0.71x, however, helps to reverse this problem. It widens the view when EF lenses are used on the EOS R and EOS RP to 1.24x and 1.15x respectively when shooting 4K video.

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Metabones has announced a new set of Speed Boosters specifically for the Blackmagic Pocket 4K

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Metabones Speed Boosters and focal length reducing lens adapters from other brands have become very popular over the last few years as more people take to smaller sensor formats like APS-C and Micro Four Thirds for shooting both stills and video. There are a number of them out there now, although Metabones continues to be held in the highest regard. Now, Metabones has announced a new series of seven Speed Booster adapters specifically designed for using various non-Micro Four Thirds lenses with the Blackmagic Pocket Cinema Camera 4K.

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Metabones brings 10fps AF-C support to the Sony A7III with new firmware

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A couple of years ago, Metabones released firmware updates for their EF-E Speed Boosters and EF-E Smart Adapters that introduced 10 frames per second max continuous autofocus to the Sony A9 mirrorless camera. Now, Metabones has released a new firmware update which adds that functionality for the Sony A7III, too.

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Three Adapter Options To Use Nikon Lenses With Sony Mirrorless (Nikon F to Sony E)

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Since I finally jumped on the bandwagon and bought a Sony mirrorless camera (even after I said I wouldn’t), I have been looking at options to use my existing Nikon (and Sigma with Nikon mount) lenses with a Sony mirrorless camera.

There are three main options available with the price ranging from under $100 to nearly $500 depending on the Sony mirrorless camera and Nikon lens combination you are trying to use.

In this article I will look at three Nikon F to Sony E adapter options to use Nikon lenses (F and G type) with Sony mirrorless cameras (APS-C cropped sensor and full frame).

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Fotodiox Excell+1 And Metabones Speedboosters Compared; Lead Is Pretty Obvious

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A few days ago we featured a new speedbooster adapter from Fotodiox, the Excell+1. The idea behind the booster is that is remaps the image crated by a full frame lens into a smaller sensor, thus both un-cropping the image and gaining a full stop of light.

Now, this is not the first speedbooster that has gone to the market, about one year ago Metabones introduced a similar series of speedboosters, but the pricing on the two products varies significantly. An Excell+1 would set you back about $160 where as a Meatabones adapter will cost between $490-$590.

Videographer Max Yuryev took the two adapters for a ride and the results seem pretty conclusive to me. You can watch the video above and make your mind alone.

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