10 Best Speed Booster Reviewed

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VILTROX EF-EOS M2 Speed Booster 0.71x Canon EF Lens to EF-M Mount Speedbooster for Canon m50 ii m6 ii m200 m50 m6 m5

The VILTROX EF-EOS M2 is designed to allows Canon EF lenses to be mounted on the Canon EOS M mirrorless camera, compatible with all lens functions. Can increase the lens 1 f-stop, increasing the amount of light into the virtual background, can better highlight the theme .
Allows the aperture increased by one level while the focal length is reduced (equivalent focal length= focal length x 0.71 x 1.6), increase the lens 1 f-stop, Bring better photo bokeh.
Signal transmission using PIN gold needle, greatly enhanced its transmission performance, real-time preview of photo information on camera, full compatible with Canon lens and camera features, e.g. autofocus, image stabilization, auto aperture adjustment, etc.
4 lens elements in 4 groups for optical clarity as well as color fidelity.Detachable tripod foot with 1/4"-20 accessory thread for direct attachment to tripods or quick release plates that feature 1/4"-20 mounts.
USB upgrade port: Through continuous software updates, VILTROX will help users get better shooting experience, fix product bugs and constantly adapt to the new EF lens, provide more Canon lens and camera combinations.

VILTROX EF-EOS M2 Auto Focus Lens Adapter 0.71x Reducer Speed Booster for Canon EF Mount Lens to Canon EF-M Mount Mirrorless Camera EOS M M2 M3 M5 M6 M10 M50 M100

【Compatibility】VILTROX EF-EOS M2 Speed Booster compatible with Canon EF Lens to Cano EF-M Mount mirrorless camera EOS M M2 M3 M5 M6 M6II M10 M50 M50II M100 M200.
【0.71x Focal Length Reducer 】Built-in optical correction group, when using this adapter, the focal length of lens should be shortened x0.71 based on the original,that is equivalent focal length = focal length x 0.71x camera conversion rate,which make the effective focal length smaller and the shooting range wider.
【Aperture increased by 1 stop】EF-EOS M2 Speed Booster can increase one stop aperture to blur the background and better highlight the theme.
【Auto Focus & Aperture Control】EF-EOS M2 Speed Booster with steady, fast and smooth autofocus, let you easy to shoot in the face of fleeting beauty. You can also adjust the aperture of EF lens by control EOS M series camera body.
【EXIF signal transmitting & IS Function】Cooper gold-plated contacts with great conductivity enhance the EXIF info. Transmission between lens and camera body. Built-in IS function, making your focus much more precise and clear.

Meike EFTR-0.71X Lens Mount Adapter Speed Booster 0.71x Focal Reduction Lens Mount Converter Speedbooster for Canon EF Mount Lenses to Canon APS-C Cameras EOS R7 R10

Use this adapter when mount a EF series lens with Canon RF S35 movie camera or APS-C camera such as EOS R10
Speedbooster lens mount adapter, can increase the lens 1 f-stop, increasing the amount of light into the virtual background, can better highlight the theme, features electronic contacts, support EF series lens auto focus and vibration compensation.
Mount adapter speed booster, allows the aperture to be increased by one stop while the focal length is reduced (Equivalent Focal Length = Focal Length x 0.71 x 1.6), increasing the lens' 1 f-stop, resulting in better bokeh in photos.
Gasket increase or decrease, after use, if the focus distance does not match after it is used with the lens, you can increase or decrease the gasket adjustment, the gasket needs to be placed flat, otherwise it will affect the picture quality.
The lens mount and camera mount of this adapter is made of metal, makes the item durable, waterdrop resistance and dust resistance, is easy carry when you outdoor shoot, product weight only 166g.

VILTROX EF-M2II 0.71x Speed Booster, EF to Micro 4/3 Focal Reducer Booster Adapter Auto-Focus for GH6 GH5M2 BMPCC 4K GH4 GH5 G100 G95 G85 OM-1 EM-1 E-M1X E-M1 iii E-M5 iii E-M10 iv E-M10 iii

Compatibility: Viltrox EF-M2 II is an upgrade version of EF-M2, allowing Canon EF series lenses to be used on M4/3 cameras, such as GH4 GH5 GF6 GF1 GX1 GX7 GX85 E-M5 E-M10 E-M10II E-PL5
0.71x Focal Reducer Converter: focal length is multiplied by 0.71 based on the original (equivalent focal length = focal length x 0.71), which helps enlarge 1 stop aperture
AF Functions & Adjustable Aperture: auto focusing function, increasing the lens 1 f-stop and the amount of light into the virtual background, better highlight the theme; adjust the aperture directly from camera to control the lens’ actual aperture
Material & Design: bayonets are made of metal with surface plating treatment, being durable and sturdy; inbuilt copper electronic contacts and IS function, making focus precise and clear, with 1/4" thread tripod foot at the bottom, etc
USB Firmware Upgrade: Equipped with USB interface, can realize software upgrade. Can perfect new functions of the lens mount adapter and fix bugs according to follow-up upgrades.

Lens Mount Adapter EF-EOS M2 Auto-Focus 0.71x Speed-Booster Control Ring for Canon EF Lens to Canon EOS-M (EF-M Mount) Mirrorless Cameras M M2 M3 M5 M6 M10 M50 M100

Compatibility: EF-EOS M2 lens converter allow Canon EF mount series lenses to work with Canon EF-M mirrorless cameras M M2 M3 M5 M6 M10 M50 M100
0.71x Focal Reducer : Focal length is multiplied by 0.71 based on the original ( equivalent focal length = focal length x 0.71 ), which helps enlarge 1 level aperture
Strong Functions: auto focusing function, increasing the lens 1 f-stop and the amount of light into the virtual background, better highlight the theme
Wonderful Performance: use PIN gold needle to transmit signal, greatly enhancing its transmission performance; optical glasses built in 4 groups / 4 glasses; enjoy EXIF signal transmission, AF(auto-focus) and adjustable aperture, etc.
Equipped with USB interface, convenient for software upgrade; achieve perfect new functions of the lens mount adapter and fix bugs according to follow-up upgrades

VILTROX EF-EOS M2 Auto Focus 0.71x Reducer Speed Booster Lens Adapter Compatible with Canon EF Lens to Canon EF-M Mount Mirrorless Camera EOS M M2 M3 M5 M6 M10 M50 M100

📷[Compatibility] EF-EOS M mount adapter ring allows EF mount series lenses to be mounted on EOS-M mirrorless digital camera(NOT including EF-S lenses)
📷[Construction] The new optical design of the lens allows the aperture increased by one level while the focal length is reduced (equivalent focal length= focal length x 0.71), increase the lens 3 f-stop, increasing the amount of light into the virtual background,can better highlight the theme
📷[Auto Focus] Fully electronic mount adapter give full play to the image stabilizer and the AF shooting performance.The design has a built-in aperture motor and an electronic contact, which giving full play to the image stabilizer and the AF shooting performance
📷[IS Function] IS function well prevent the camera body and lens shaking. It ensures clear and high quality images while shooting. Full metal body, designed with 1/4 screws at the bottom. Detachable tripod base
📷[EXIF Signal Transmitting] The design of gold-plated needle PIN to transmit signal, which has excellent signal transmission performance while it supports EXIF signal transmission. Support firmware upgrade via USB port

VILTROX EF-EOS M2 Speed Booster, 0.71x Auto-Focus Canon EF Lens EF-M Speedbooster Compatible with Canon EF to m50 ii m6 ii m200 m50 m6 m5

【Compatibility】Viltrox EF-EOS M2 Speed Booster is designed to allow Canon EF-mount series lenses to Canon EF-M mirrorless cameras, such as Canon M5 M6 M10 M50 M100.
【0.71x Focal Reducer Booster】Focal length is multiplied by 0.71 based on the original (equivalent focal length = focal length x 0.71), which helps enlarge 1 level aperture, increasing the amount of light into the virtual background, can better highlight the theme.
【Multifunctional Lens Adapter】Signal transmission using PIN gold needle, greatly enhanced its transmission performance, real-time preview of photo information on camera, full compatible with Canon lens and camera features, e.g. autofocus, image stabilization, auto aperture adjustment, etc.
【USB upgrade port】Support firmware upgrade via USB port. Through continuous software updates, VILTROX will help users get better shooting experience, fix product bugs and constantly adapt to the new EF lens, provide more Canon lens and camera combinations.
EF-EOS M2 EF Lens to EF-M Mount Speedbooster is with 1/4"-20 accessory thread for direct attachment to tripods or quick release plates that feature 1/4"-20 mounts.

Meike MK-EFTR-071X Auto Focus 0.71X Speed Booster Lens Mount Adapter for Canon EF Mount Lens to Canon RF Mount Cameras EOS R7 R10 C70 R50

The adapter can combine EF series lens with Canon RF S35 cinema camera or APS-C camera EOS C70 EOS R EOS RP R5 R6 R7 R10
0.71x focal reduction lens mount adapter can reduce the focal length of 0.71 times, improve the luminous flux, and increase the aperture by one gear.
Supports automatic focusing, automatic aperture, anti-shake and other lens function.
Common functions assigned to the camera, such as shutter speed and aperture settings, can be adjusted through the custom thumbwheel, which is equivalent to Canon RF lens control ring.
Built in 4 groups of 5 elements optical glasses. The design of gold plated PIN brings excellent signal transmission.

Viltrox NF-M43X Manual Focus 0.71x Reducer Speed Booster Lens Mount Adapter w/Aperture Control for Nikon G D Lens to M4/3 Mirrorless Camera GH5 GH4 GF9 GX85 GX8 E-M5 E-M10 E-PL3 Pen-F BMPCC

Viltrox NF-M43X lens adapter allows Nikon G&D mount lens to be used on M4/3 mirrorless camera
4 groups 5 pieces optical glasses, aperture is 1X enlarged for you to blur the background distinct the major subject
0.71X focal length multiplier, APS-C camera can take full frame pictures.
8-stops exact aperture dial
Constructed of high-precision aluminum material

NEEWER EF-EOS M Lens Mount Adapter 0.71x Autofocus Speed Booster Compatible with Canon EF Lens to EOS M Series Camera EOS M M2 M3 M5 M6 M10 M50 M100 M200 and More

【Widely Compatible EF-M Lens Adapter】 The NW-EF-EOS M lens adapter allows users to install EF lens on M mount cameras with ease, compatible with Canon EOS M M2 M3 M5 M6 M10 M50 M100 M200 Cameras. A great way to expand the compatibility of your EOS EF lenses
【Complete Functions】 The speed booster adapter ring decreases the original focal length of your lens by 0.71x while increasing one f stop aperture to realize better highlight and blurred background. The adapter includes electrical contact points to realize smooth EXIF data transmission. Also supports autofocus and image stabilization capacities of your lens
【HD Optical Glass】Built with HD optical glass material, the adapter ring helps convert your lens without affecting image sharpness. No dark corners. The optical glass is seamlessly sealed with rubber to make the convert ring dust proof and water resistant
【Sturdy All Metal Build】The full metal body of the NW-EF-EOS M lens adapter makes it robust and durable. It also comes with a bottom 1/4" threaded screw hole to mount it on a tripod and other 1/4" compatible devices
【What’s Included】The package includes: 1 x NW-EF-M 0.71X Speed Booster Lens Mount Adapter, 1 x Front Cap, 1 x Rear Cap, and 1 x Instruction Manual

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