Name: Canon EF-EOS R 0.71x Mount Adapter for EF-Mount to EOS C70
Brand: Canon
SKU: CAMAEFC70
Price: 649.00 USD
Availability: BackOrder
Rating: 4.8 (13 reviews)

Canon EF-EOS R 0.71x Mount Adapter for EF-Mount to EOS C70

Canon EF-EOS R 0.71x

Canon

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Although this item is temporarily on Backorder, you can order it now and it will ship as soon as it arrives. Your card will only be charged once item is shipped.

Temporarily On Backorder

Although this item is temporarily on Backorder, you can order it now and it will ship as soon as it arrives. Your card will only be charged once item is shipped. Estimated to Ship: 09/2025.

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Photography

Lenses

Lens Mount Adapters

Canon Lens Mount Adapters

Canon EF-EOS R 0.71x 

Adapt your EF-mount lens to the Canon EOS C70 with the Canon EF-EOS R 0.71x adapter. Retain image quality & aperture. Shop now!

An essential tool for photographers and videographers, the EF-EOS R 0.71x Mount Adapter for EF-Mount to EOS C70 is expertly designed to convert light transmission from a full-frame to a Super 35mm image format. This high-quality mount adapter significantly extends the angle of view and enhances optical sensitivity, providing you with superior image quality and clarity. Engineered for seamless integration, it works flawlessly with your camera's optical corrections, ensuring that your shots are always sharp and well-adjusted. Whether you're capturing breathtaking landscapes or shooting professional-grade videos, this EF-EOS R 0.71x Mount Adapter is a must-have accessory for your EF-Mount to EOS C70 camera. Experience the difference in your photography and videography with this innovative mount adapter, designed to optimize your camera's performance and expand your creative possibilities.

This was part of a FREE giveaway when I purchased my C70 and man am I glad I got it.  I have YEARS of EF-L glass at my studio and this makes it all worth keeping around.

Must have for a C70

Much better than the alternative Viltox one

Go named brand

A total game-changer.  It definitely brings back the field of view and works wonderfully on the RED Komodo.  You do have to be careful about making sure some older vintage lenses with protruding back elements will clear and not contact/rub the element.  Fantastic design, light transmission, and minimal degradation of image.

A total game-changer.

Expanded sensor to full frame with full communication

Perfect speed booster choice

I only have Canon EF lenses at this point and this works great!

Works Great!

it works as advertised but quite expensive

works as expected

Must have

This speed booster is an essential piece of my C70 kit. The $600 price point allows me to bridge to the RF mount while utilizing all my EF glass. PLUS it knocks my 2.8 down to a 1.8!  My only know with this booster is...why is it NOT compatible with the R5/R6? Slam dunk if that were the case. In spite of that I am so happy with this adapter...totally worth every penny!

Essential kit for the C70

Kind of pricey for what it is, but works great on RED Komodo. Love that it makes a full frame lens it?s true focal length on crop sensor like c70 or Komodo, but it also acts as a barrier to stop dust from reaching the sensor when changing lenses.

Works great on RED Komodo

Beyond the product itself, I have been delighted with every purchase I've made on this website due to the excellent customer service I receive. I have been a customer of Adorama now for over 8 years and cannot express how pleased I am with the professionalism of your staff in-store and on support chat. Excellent job! 

As for the product, it is no surprise that Canon has engineered such a high quality product. I'm extremely happy with the performance of the adapter/mount, my EF lenses perform brilliantly on the Canon C70.

Excellent customer service along with products

Works great

As someone who uses a C200 and EF glass, this is a life saver and has helped me out in low light settings on my C70. I was nervous that the autofocus wouldn't be as efficient but I was proven wrong when using Canon Lens. When I would another brand lens however there seemed to be some lag but nothing I couldn't fix by changing some settings.

Overall well worth the buy. If you currently use EF lens and don't want to make the jump just yet to the new mount with lens, this will save you some cash!

Pricey but well worth it!

Excellent adapter, solid construction. Worth the price.

Canon EF-EOS R 0.71x Mount Adapter for EF-Mount to EOS C70

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