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Viltrox EF-M2II speed Booster Adapter Focal Reducer Auto-focus 0.71x for Canon EF mount lens to Panasonic Olympus M43 camera

34 reviews
100% of buyers enjoyed this product! 178 orders
₹ 21 000.00
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Viltrox EF-M2II mount adapter is designed to allow Canon EF-mount series lens to be used on M43 camera.
Plus 0.71 based on the original focal length (equivalent focal length=focal length x0.71), which help enlarge 1 level aperture. Build-in 4groups, 4pcs optical glasses, AF(autofocus) and adjustable aperture, etc.
To update adapter firmware, latest firmware can be download from official website, connect adapter to computer with USB cable and copy the file into adapter memory. Do not required to attach lens or camera.
To change AF mode, please turn off camera, take out battery, insert battery and turn camera back on again for camera to recognize new AF mode as a new lens. Slow focus will happen on low end lenses in CDAF mode


Integrated USB port for adapter firmware update
– 4 elements in 4 groups optics increase light input by one F stop and reduce focal length by x0.71
– Dedicated switch to select between Contrast Detection and Phase Detection Auto Focus mode
– Contrast Detection AF allow Flexible Spot to be moved and focus across the frame and support Eye focus on specific camera#
– Phase Detection Auto Focus gives faster focus experience on most lenses.
– High precision aluminum alloy with chromium plating on both mounting surface to ensure smooth installation and durability.

Package Listing

1 x Viltrox EF-M2II Adapter
1 x Lens Dust cap
1 x Product Manual


We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.

How do you ship packages?

Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.

Do you ship worldwide?

Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.

What about customs?

We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.

How long does shipping take?

Shipping time varies by location. These are our estimates:
Location *Estimated Shipping Time
United States 10-30 Business days
Canada, Europe 10-30 Business days
Australia, New Zealand 10-30 Business days
Central & South America 15-30 Business days
Asia 10-20 Business days
Africa 15-45 Business days
*This doesn’t include our 2-5 day processing time.

Do you provide tracking information?

Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.

My tracking says “no information available at the moment”.

For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.

Will my items be sent in one package?

For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.

If you have any other questions, please contact us and we will do our best to help you out.


Order cancellation

All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.


Your satisfaction is our #1 priority. Therefore, you can request a refund or reshipment for ordered products if:

  • If you did not receive the product within the guaranteed time( 45 days not including 2-5 day processing) you can request a refund or a reshipment.
  • If you received the wrong item you can request a refund or a reshipment.
  • If you do not want the product you’ve received you may request a refund but you must return the item at your expense and the item must be unused.

We do not issue the refund if:

  • Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
  • Your order did not arrive due to exceptional circumstances outside the control of jsdpro (i.e. not cleared by customs, delayed by a natural disaster).
  • Other exceptional circumstances outside the control of

*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page

If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.


If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.

Please do not send your purchase back to us unless we authorise you to do so.

Real customer reviews

34 reviews
100% of buyers enjoyed this product!
5 stars
4 stars
3 stars
2 stars
1 star
verifed buyer
21 Oct 2019

It came in 2 weeks, in integrity. I use with bmpcc 4K and 18-35. Unfortunately, the fully open diaphragm is a very soapy picture. This disadvantage is discussed in many videos on the Internet. If open 1.2, but less than 2.2 cannot be removed

verifed buyer
9 Oct 2019

Nice very accurate and also can fast just delayed at the location post office. Tested it with my Canon 50mm and maeeerrrrn gets me up f1.3 and its really dope and tasty

verifed buyer
7 Oct 2019

Works on panasonic g90 with sigma 18-35. Bunch of course cool, the picture is juicy, but heavy and the focus is twisted for *** you :)

verifed buyer
30 Sep 2019

Not a bad booster, but not adjusted. You have to snort yourself.

verifed buyer
28 Sep 2019


verifed buyer
25 Sep 2019

can safe working good

verifed buyer
20 Sep 2019

Product does what it does but its just very soft loose details on the footage. I had to purchase another speedboster

verifed buyer
15 Sep 2019

Pretty fast shipping. Everything is neatly packed. Put the last firmware. Backlash (as they say in some reviews) i do not have. While tested only on one officially compatible lens. Autofocus works, aperture is controlled. Crop becomes 1,5 instead of 2. While very satisfied!

verifed buyer
12 Sep 2019

It even works with some efs cameras

verifed buyer
12 Sep 2019

Ordered on august 26, it came to krasnoyarsk on september 12. Everything is fine, the adapter works fine, infinity is available. There is a small backlash, exactly the same as the subscriber. In sharpness, too, everything is in the field. Excellent store in general.

verifed buyer
6 Sep 2019

Shipping less than 2 weeks. The product is excellent.

verifed buyer
28 Aug 2019

Works well

verifed buyer
28 Aug 2019


verifed buyer
21 Aug 2019

Received in 2 weeks in ukraine. Thank you

verifed buyer
20 Aug 2019

I can't believe I got a speed booster converter for fraction of the cost of Metabones and even less than the cost of Viltrox in US. Seller shipped fast, arrived in 15 Days, no custom duty.

verifed buyer
18 Aug 2019

A good thing, allows you to use my panasonic gh5s with lenses from canon ef. True autofocus works inperfectly, there is also a small backlash and with some glasses there is a small "barrel" on the edges. But the analogs are all the more so at such a price he does not have, the subscriber is more expensive, and then it would not be known whether everything is perfect with him or not :-) it was very nice that he increases the aperture! Even the dark f4 lens i have now with bokeh. I'm happy and sent sooo quickly

verifed buyer
15 Aug 2019

Very fast shipping thank you

verifed buyer
27 Jul 2019


verifed buyer
25 Jul 2019

fast shipping expected quality

verifed buyer
21 Jul 2019

Panasonic lumix dmc g 80 works perfectly. 1.8 becomes 1.2 definitely recommend. The store is official.

verifed buyer
18 Jul 2019

He arrived in Romania in 30 day . Working perfect on my LumixG7 with canon lens . Thank's a lot !

verifed buyer
4 Jul 2019

The parcel reached just 2 weeks to khabarovsk!, the booster is excellent! I recommend both the product and the store

verifed buyer
6 Jun 2019

Great product, everything works. Im happy I didnt spend all my money for metabones :D

verifed buyer
30 May 2019

Got it fast. Bought for g7. After the tests, write off

verifed buyer
23 May 2019

Worked with canon 17-40mm, after connecting canon 50mm f1.8 began to issue an error, although the glass in the description is listed as compatible. Solved only by sequential overflows of the firmware from the initial version to the new one. One shot was tampered with. I hope there will be no more such stand. Initially there is no focus on infinity, you need to twist the central element, but this is not a problem. The rest of the picture quality and convenience are excellent. Parasitic glare does not add content.

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