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Viltrox EF-E II Lens Mount Speed Booster Adapter

Viltrox EF-E II Lens Mount Speed Booster Adapter

AF Auto Focus Reducer / for Canon EF Lens to Sony E-mount Camera

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 Viltrox EF-E II lens adapter is a upgraded version of EF-NEX IV. By 0.71x shortening original focal length, which help to speed up focusing process by 50%. Built-in optical glasses can increase aperture by 3 stops. It is compatible for Canon EF series lens and for Sony E-mount (APS-C) series cameras. It supports auto focus(AF), EXIF signal transmission and USB upgrade. To shoot more wonderful pictures with EF lens, you cannot miss Viltrox EF-E II.

Features:
Lens adapter for Canon EF series lens to use for Sony E-mount (APS-C) series cameras.
Auto focus, support CDAF and PDAF, your focusing process can be quicker or easier.
0.71x multiply the original focal length, which help to accelerate focusing speed by 50%.  
Built-in 4 groups 4 glasses optical glass, aperture is increased by 3 stops, so you can better distinguish the main object and blur out background.
Gold-plated copper contact enhance EXIF signal transmission.
Support USB upgrade for sustainable usage.
CNC precision constructed aluminum body ensure perfect installation.

Specifications:
Brand: Viltrox
Model: EF-E II
Material: CNC Aluminum
Lens Compatibility: For Canon EF Series Lenses
Camera Compatibility: For Sony E-mount (APS-C) Series Cameras
Focus Mode: Auto Focus (AF)
Focal Length Multipler: 0.71x
Optical Glass: 4 Groups, 4 Glasses
Tripod Socket: 1/4" Thread
Firmware Upgrade: USB Upgrade Port
Diameter and Length: 68 * 28mm / 2.7 * 1.1"
Item Weight: 200g / 7.1oz (with covers)
Package Size: 11 * 10.1 * 6cm / 4.3 * 4 * 2.4"
Package Weight: 371g / 13.1oz

Package List:
1 * Lens Adapter
1 * Case
1 * Wrench
1 * User Manual (English/Chinese)

Note:  
1. Camera and lens are not included.
2. Please select a certain mode before mounting the lens adapter.

Questions & Answers

  • Q Bonjour, J'aimerais savoir si cette bague fonctionne bien avec l'objectif sigma 17-70 f.2.8-4 et l'objectif tamron 70-300 f.4-5.6 ? Merci

    By Coralie Voisin March 7, 2018

    A Oui, approprié

    Reply By Customer Service Center March 9, 2018

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Customer Reviews

Average Rating:

5

based on 15 Customer Reviews

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  • By d***n

    April 6, 2018

    I most use this product for it speed booster capabilities, I believe it autofocus ok.

    Is this helpful? (45) (4)

  • By d***l

    April 3, 2018

    Works as it should, thank you

    Is this helpful? (43) (1)

  • By w***d

    April 18, 2018

    Great product! Not perfect with AF but image quality is great and all things considered it produces great images!

    Is this helpful? (28) (1)

  • By v***z

    April 11, 2018

    Been working fine, better auto focus than my Sigma adapter!

    Is this helpful? (29) (2)

  • By d***s

    February 9, 2018

    I have to say, this is one the best budget Speedbooster I have ever had, it's worth every Penny !!

    Is this helpful? (32) (2)

  • By s***4

    January 27, 2018

    I bought this for my Sony FS5, It works perfectly. Give my lenses a wider field of view so I basically have a full frame sensor again.

    Is this helpful? (46) (3)

  • By s***o

    January 27, 2018

    At first I didn't know whether I should purchase this over the metabones. Metabones have always been my go to for adaptors but it is quite a chunk of money you'd have to drop in order to get it. I was pleasantly surprised at how well my viltrox works. It fits perfectly my Sony A7R II and I can still use my canon glass. Definitely worth the purchase if you're looking for something that works and it's worth your money.

    Is this helpful? (46) (3)

  • By c***l

    January 6, 2018

    As others have said, sharpness isnt perfect, but for $130 its great!!! Usually not noticeable except for extreme cases:brick walls or scanning film -where even resolution is needed corner to corner.

    Is this helpful? (33) (2)

  • By b***o

    January 6, 2018

    Great alternative to Metabones adapters. Was looking for a way to use Canon glass with my mirrorless Sony camera and this fits the bill plus some.

    Is this helpful? (33) (2)

  • By s***i

    December 28, 2017

    Satisfied with this purchase. Use of my a6000 with my Canon lens meet my requirements. All my example pics were taken with my Canon 17-40mm

    Is this helpful? (56) (2)

  • By h***4

    December 11, 2017

    or this price, you will not find a better product! We did have one issue with them not being able to capture infinity focus sharply, but quickly taking the screw out of it's innards and rotating the glass a few times, solved that issue.

    Is this helpful? (32) (2)

  • By d***e

    January 15, 2018

    So far, this adapter has worked very well with my canon 70-200 f/4, there's very little vignetting but auto focus is pretty slow

    Is this helpful? (22) (5)

  • By k***l

    December 22, 2017

    saved me the money that metabones would of taken

    Is this helpful? (18) (1)

  • By a***y

    December 5, 2017

    I just got this adapter and right off the bat, the autofocus sucks for me but with that out of the way, the wider field of view and the extra light sort of cover the downfall.

    Is this helpful? (12) (2)

  • By s***a

    December 4, 2017

    great adapter, worth the price, nice build, great value it boost the lens to it max... the only small problems i had was some autofocus slow or fail with canon lenses (tested with 85mm 1.2L), and It seams to have some issues with sigma lense(s) (i just tried one lens that freeze the camera and restarted it randomly when trigged)

    Is this helpful? (7) (1)

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