Metabones designs, manufactures and sells quality camera adapters and related camera accessories. Metabones has its own design team based in Japan and Hong Kong, and also has its own production line in China. As a camera accessories specialist, Metabones is known for its unique designs, workmanship and reliability. By consulting and collaborating with users of different brands such as Leica, Carl Zeiss, Haselblad, Nikon user, we gain an in-depth understanding of what the user needs. We conduct a lot of experimentation to enhance and perfect our designs. Metabones will never stop its insatiable drive to improve our products and ensure user satisfaction.

Mythbuster Adam Savage geeks out over the Metabones Speed Booster, is it a myth waiting to be busted?

Adam's describes himself as an 'avid amateur mediocre photographer' and his main camera is a Canon 5D Mark III used with a hoard of Canon prime lenses, but this time he talks mostly about his Sony NEX cameras and the Metabones Speed Booster NEX to EF lens adapter, and how his mind got blown to pieces when he realized what it does-and that it works:

"Adam and Norm talk about photography as a hobby and review the Metabones Speed Booster, a new lens adapter connects Canon full-frame lenses to Sony's compact cameras. With side-by-side photo comparisons, we show why this is a piece of hardware that is very exciting for Adam's needs."

Metabones Speed Booster first impressions at DPReview: "Image quality is very impressive, with results that compare exceptionally well against a full frame sensor. You do pay a small price in terms of corner softness and CA."

This evaluation by the Diallo & Butler duo focuses more on stills photography rather than video, and this is why we like it. Nice explanation of the focal reducer technology, and with/without the SpeedBooster adapter side-by-side pics. . . . read more

Metabones Speed booster on a Fuji X-Pro1 with some Leica Glass and a lot of shake, by Daniele Cametti Aspri at (of course)

​I believe there is something special about the crowd of photographers posting at I will not delve into the kind of 'special' I'm reffering to, but, in any case, here's a review-or more properly, user experience, with the Metaboners Speed Booster mounted on the Fujifilm X-Pro1 and used with a bunch of (of course) Leica lenses: Leica R Elmarit 19 /2.8, Summicron 35/2, Summicron 50/2 and a Summicron 90/2. Daniele does not go into the very specifics of image quality issues, So I tried to pixel-peep the mostly blurred and noisy pictures she provides with the review, and came out empty handed. And then, there's the Colombus egg:

"But last night when I saw the Metabones Speed Booster ad everything was so clear. It is a Columbus egg! If you cannot have a full sensor size why don’t you reduce the image circle of a full frame lens to an aps c size sensor? The effects are . . . read more

Roger Cicala tests the Metabones Speed Booster Adapter: It is more suited for video than photography, but it works, like Magic.

Hooray, a Speed-Booster review made for photographers! So, how did it do? As Roger found out, there are good news, but also bad ones:

"I think it was pretty obvious that I came armed for battle, ready to slam this product as some marketing overhype. I was wrong less correct than I might have been. The Speed Booster does what they claimed it would do, much to my shock and surprise. It creates a wider-angle, greater aperture lens while retaining resolution and acutance. It does increase astigmatism a bit, although I doubt this will cause anyone problems unless someone is trying to shoot landscape . . . read more

A Metabones Speed Booster full review at EosHD: If this adapter does not send shock waves through the camera industry I don’t know what will.

The kind of, outlandish claims of the Speed Booster makers, seem to be confirmed by yet another review, with phrases like this "You will not find a wide angle (24mm equiv.) F1.0 anywhere on the market. Yet suddenly here you are shooting with one on a crop sensor!!" and this: "Your NEX 7 becomes a ‘NEX 9′ full frame Canon mount mirrorless camera."
Eos HD tested the Sony NEX to Canon EF lens mount adapter version of the SpeedBooster:

"Because full frame is a ‘premium’ photography product, the Japanese corporate machine has been mindful of limiting supply of full frame cameras in order to maintain inflated prices and margins. We waited a long time for the D800 and 5D Mark III and it is only now in 2013 that for the first time we have two ‘affordable’ full frame DSLRs with stripped down features – the D600 and 6D. Neither do very good video. So to have that full frame look when I need it on my Sony video camera is a real blessing. . . . read more

Using Adapted Lenses On Your Mirrorless Cameras, by Chris Gampat at Digital Camera Stuff.

"Mirrorless Cameras are not only capable of shooting really amazing images, but they have the ability to do so with nearly any lens. Sure, many systems have their own lens lineups with autofocus and other bells and whistles, but maybe you've got a collection of lenses already. Even if you don't, browse around Flickr and you'll see that people hunt after lenses in order to adapt them to their cameras. If you see yourself becoming one of those lens collectors, then you'll want to keep in mind a couple of pointers before and when you put that lens onto your camera. . . . read more

NEX-7 vs 5D Mark III with Metabones Speed Booster and a Sigma 24mm f/1.8 at EOS HD: does it really work? Yes it does!

"This is a very simple test just designed to show you that the image from the Metabones Speed Booster on a NEX 7 really does seem to match the appearance of a real full frame camera in terms of every characteristic.

The field of view is almost identical with the same lens, despite it being paired with two very differently sized sensors. Now you can think in terms of a full frame camera when purchasing 35mm photographic lenses for your mirrorless camera.Indeed the amusing thing is that even looking with the naked eye at the sensor in the NEX 7 through the Speed Booster adapter, it looks full frame sized. An optical illusion. . . . read more

Metabones releases white paper about the inner workings of the Speed Booster

We got some highlights in case the file goes away, but hey, the whole document is worthy of a read. Especially for micro 4/3 camera owners :) Check out the interesting section 17 about the usage of a similar technique by Stanley Kubrick during the shooting of Barry Lyndon.

The Speed Booster – a New Type of Optical Attachement for Increasing the Speed of Photographic Lenses
Brian Caldwell, Caldwell Photographic Inc.
and Wilfried Bittner, WB Design
1) Introduction . . . read more

Micro Four Thirds users are lucky if they want to use a Metabones Speed Booster.

The Speed Booster allows only full frame lenses to be used on mirrorless cameras, with the exception of micro 4/3 cameras that will be able to utilize BOTH full-frame and DX (cropped lenses). From Metabones Speed Booster PDF:

Availability date for the micro 4/3 adapter has not been set yet, cost is however set at $599 . . . read more

Philip Bloom reviews the amazing Metabones Speed Booster: Is it too good to be true? Apparently not. (Check out the fantastic video showcase he made with the Metabones Speed Booster)

"When I first understood what this did, it made no sense to my tiny brain. James has made it a hell of a lot clearer and from his tests and using it he was really impressed. James is not an expert on optics, he is a shooter…he is just way more clued up on the technical stuff than me…after all he did notoriously remove an OLPF from his brand new 5Dmk3…Crazy man! BUT, let me say this.

James is VERY HARD to please. He is always whinging about something he doesn’t like about a camera or something. So for him to say he wants one is a big deal. Should you go out and buy one because of this post? That’s up to you. I never recommend buying anything on one person’s say-so. I have it here with me in Dubai and will do some additional testing…I have my 85mm F1.2 with me, so that should be lovely lens to test it out . . . read more

Faster, Wider, Sharper! Metabones, announces the Speed Booster, the full frame lens adapter for a mirrorless camera that promises wonders, and it ain't 1st of April yet

Metabones and Caldwell Photographic introduce Speed Booster

Petersburg, VA, USA, January 14, 2013 - Metabones® and Caldwell Photographic jointly announce a revolutionary accessory called Speed Booster™, which mounts between a mirrorless camera and a SLR lens. It increases maximum aperture by 1 stop (hence its name), increases MTF and has a focal length multiplier of 0.71x. For example, the Canon EF 85mm f/1.2L II lens becomes a 59mm f/0.9 lens on a Sony NEX camera, with increased sharpness. The faster F-stop allows for shallow depth-of-field and a lower ISO setting for decreased noise. . . . read more

Metabones Speed Booster (Canon EF to Sony NEX version) adapter review by Bryant Naro: It allows you to use your Canon lenses, making them FASTER, sharper, and wider, giving the an almost full-frame field of view.

Bryant also managed to semi-use an EF-S lens, the Tokina 11-16mm. While the lens did vignette, it was usable at the 14-16mm range.

"It seems like everything aligned perfectly for this thing to be engineered by some really smart folks, and it’s definitely going to pay off. When I first threw the Speed Booster adapter on, I could instantly tell the difference in depth of field. an ƒ1.0 is very, very shallow. You may be thinking, “Well sure you can throw glass behind glass, but the sharpness of the lens will be lessened because of a whole lot of aberrations and what not.” After doing some test, I can confirm that this adapter appears . . . read more

Selected Items
Click to close the selection preview
Compare List
Teleconverters: Click to see the selected items
Click to Compare the selected items
Flashes: Click to see the selected items
Click to Compare the selected items
Lenses: Click to see the selected items
Click to Compare the selected items
Cameras: Click to see the selected items
Click to Compare the selected items