SKU: 2937177036

Viltrox Speed Booster 0.71x AF Canon EF Lens to Sony E Mount Camera EF-E II

Sale price$153.00 Regular price$170.00
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Ships within 48 hours · Estimated delivery Aug 29 - Sep 3

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Description

Viltrox Speed Booster 0.71x AF Canon EF Lens to Sony E Mount Camera EF-E IIVILTROX EF E II 0. 71x Speed Booster is designed to be compatible with Canon EF mount lenses to be used on Sony E mount mirrorless cameras. The EF E II booster is built with strengthened copper electronic contacts, bringing much more stable signal transmission, and offers compatibility with functions like Auto Focus; Electronic Aperture Control; EXIF Info. Transmitting; lens IS Stabilization Function; USB Firmware Upgrading,etc. Compatibility:

VILTROX EF-E II 0.71x Speed Booster is designed to be compatible with Canon EF-mount lenses to be used on Sony E-mount mirrorless cameras. The EF-E II booster is built with strengthened copper electronic contacts, bringing much more stable signal transmission, and offers compatibility with functions like Auto Focus; Electronic Aperture Control; EXIF Info. Transmitting; lens IS Stabilization Function; USB Firmware Upgrading,etc.

Compatibility:

  • Supports PDAF/CDAF of Cameras: Sony A9/A7RIII/A7RII/A7III/A7II/A6500/A6300/A6400
  • Supports CDAF of cameras: Sony A7R/A7SII/A7S/A7/NEX7/A6000/A5100
  • Compatible with Canon EF Mount lenses

Note: Full-frame cameras need to be used in APS-C format

0.71x Focal Reducer Booster

With the built-in optical correction group,Focal length of lens is multiplied by 0.71 based on the original, makes the effective focal length smaller and the shooting range wider.

Equivalent focal length = focal length x 0.71 x APS-C conversion factor

Take 50mm lens as an example:

EF-E II: 50mm x 0.71 x 1.5 = 53mm

Ordinary Lens Adapter: 50mm x 1.5 = 75mm

Increases the aperture by 1 stop

EF-E II booster can increase one stop aperture of lens to blur the background and better highlight the theme.

Supports Auto Focus

Built with strengthened copper electronic contacts, EF-E II supports Auto Fcous, Electronic Aperture Control and EXIF Info. Transmitting, giving you fast speed and smooth focusing experience.

Dual Auto Focus Modes - CDAF/PDAF

EF-E II Booster support two focus modes:Contrast Detection Auto Focus and Phase Detection Auto Focus,giving you fast speed and smooth focusing experience.The two focus modes can be switched quickly.

Supports firmware upgrade

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 lens and camera combinations.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 2937177036

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Eric Gilbert
Natrona Heights, US
★★★★★ 5
Excellent sweater I must buy very comfortable
This is an excellent pullover sweater. It's very lightweight, but it feels so good on u and does keep you warm
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Reviewed in the United States on February 6, 2026
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Hardeep
Chelsea, US
★★★★★ 5
Looks high quality!
Color: Green, Size: Medium
Looks high quality! Very rich color, thick fabric, and fits well but sleeves may be a little loose. Washed on cold & regular dry, looks fine.
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Reviewed in the United States on January 21, 2026
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SWC TX
Chelsea, US
★★★★★ 4
Good Quality wrong fit
Color: Green, Size: Medium
Great color. NICE style. Liked the pattern on the sweater. Good quality. Returned because the size was off for my husband's body.
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Reviewed in the United States on January 6, 2026
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Garrett M.
Los Angeles, US
★★★★★ 5
Great sweater
Color: Army Green, Size: Large
Love this, fits great and feels great
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Reviewed in the United States on February 25, 2026
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Ashley Brooke
Port Orchard, US
★★★★★ 3
Cute but Not the Best Quality
Looks nice but ripped after a few wears.
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Reviewed in the United States on May 29, 2026

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