R7 and CANON MOUNT ADAPTER EF-EOS R 0.71X - Consensus working?

I've done some searching - and it appears the Canon MOUNT ADAPTER EF-EOS R 0.71X seems to work fine with the R7 - but very few reviews/reports - one here:

https://www.youtube.com/watch?v=t8mWggxotN8

Appreciate the answer is get the R6 in many instances not this adapter for R7 - but wondering if users out there have more experience of it - good or bad?   Functional without issues?

I'd use it with the EF 70-200 f/2.8 II primarily on R7 or R10 - if my R5 had another lens on it and small in the bag.

CameraCarl wrote:

Isn't this a video speed booster? I don't know anything about these kinds of adapters, but a B&H product description for one states: The Speed Booster is not intended for still photography but will work if the camera is configured to APS-C mode.

Is this what you want?

Hi

Yes it is - but earlier reports say it works nicely on the R and a way to get round the 4K crop - and the youtube video mentions it works OK with the R7 so to gain extra light on the crop sensor.

E.g. a canon version of the viltrox and metabones - not officially supported on the R7 but reported to work - so wondering on any forum members experience.

KevinRA wrote:

I've done some searching - and it appears the Canon MOUNT ADAPTER EF-EOS R 0.71X seems to work fine with the R7 - but very few reviews/reports - one here:

https://www.youtube.com/watch?v=t8mWggxotN8

Appreciate the answer is get the R6 in many instances not this adapter for R7 - but wondering if users out there have more experience of it - good or bad? Functional without issues?

I'd use it with the EF 70-200 f/2.8 II primarily on R7 or R10 - if my R5 had another lens on it and small in the bag.

Interesting adapter, the precise oposite of the more usual 1.4x extender.

If you want ot use full frame EF lenses on an R7, R10 or R50 without getting the extra reach - a 100mm stays just that, not becoming a 160mm field of view.

Perhaps more interesting with the wider angle FF lenses on APS-C?

With this and a 1.4x extender, you can have three choices of 'reach' with one lens!

A bit expensive, but probably good quality glass from Canon.

butterflyman wrote:

I am confused a bit. Canon to my knowledge does not make a 0.71x adapter so you must be using a 3rd party adapter made for Canon. I don't really see what any issues would be except for the loss of focal length and larger aperture.

It's a Canon adapter :
https://www.usa.canon.com/shop/p/mount-adapter-ef-eos-r-0-71x?color=Black&type=New

Good for keeping your FF wide angle lenses wide on APS-C

CameraCarl wrote:

Le Kilt wrote:

butterflyman wrote:

I am confused a bit. Canon to my knowledge does not make a 0.71x adapter so you must be using a 3rd party adapter made for Canon. I don't really see what any issues would be except for the loss of focal length and larger aperture.

It's a Canon adapter :
https://www.usa.canon.com/shop/p/mount-adapter-ef-eos-r-0-71x?color=Black&type=New

Good for keeping your FF wide angle lenses wide on APS-C

This says it is designed to work on the C70. No mention of whether it works on any other bodies.

Yes, definitely designed for the C70, but the OP's link to a video shows it being reviewed and working on an R7.

Steve Balcombe wrote:

Le Kilt wrote:

KevinRA wrote:

I've done some searching - and it appears the Canon MOUNT ADAPTER EF-EOS R 0.71X seems to work fine with the R7 - but very few reviews/reports - one here:

https://www.youtube.com/watch?v=t8mWggxotN8

Appreciate the answer is get the R6 in many instances not this adapter for R7 - but wondering if users out there have more experience of it - good or bad? Functional without issues?

I'd use it with the EF 70-200 f/2.8 II primarily on R7 or R10 - if my R5 had another lens on it and small in the bag.

Interesting adapter, the precise oposite of the more usual 1.4x extender.

If you want ot use full frame EF lenses on an R7, R10 or R50 without getting the extra reach - a 100mm stays just that, not becoming a 160mm field of view.

It doesn't fully compensate for the crop factor. The 100 mm lens becomes an actual 71 mm combination, which then has a 71 x 1.6 = 113.6 mm equivalent FoV. Seems picky I know, but the difference could be important to some.

True, it was designed for the EOS C70 which has a slightly wider 'Super 35mm' sensor than R7's APS-C.

KevinRA wrote:

I've done some searching - and it appears the Canon MOUNT ADAPTER EF-EOS R 0.71X seems to work fine with the R7 - but very few reviews/reports - one here:

https://www.youtube.com/watch?v=t8mWggxotN8

Appreciate the answer is get the R6 in many instances not this adapter for R7 - but wondering if users out there have more experience of it - good or bad? Functional without issues?

I'd use it with the EF 70-200 f/2.8 II primarily on R7 or R10 - if my R5 had another lens on it and small in the bag.

I've used the Viltrox adapter with precisely this lens as my workhorse for shooting basketball all winter and it works very well.  The primary goal is to shorten the focal length so I can use one lens on both ends of the court.  50-140 on APS-C -- roughly 80-220 full frame -- works nicely.  I tested it at home on a static subject, and at all focal lengths the result was still very sharp.

There's no evident AF problems as a result; AF doesn't hit every time, but it didn't with the RF 100-500 shooting football and soccer either.  Once in a very great while (maybe once every 2000 frames or so) I get an error 20 and the camera reboots.  I can't say for sure that I never had that with the 100-500.

Of course, there's the question why I didn't get the R5 or R6 to begin with.  For one, I'm used to the crop sensor, and it works much better for football and soccer with the 100-500.  I also have the 17-55.  The R5 is much more expensive; the R6 is also quite a bit more expensive, has fewer pixels (makes for more difficult cropping), and...whatever.

I suppose I could eventually get an R6, since the 7DmkII (my second body) really can't keep up.  But this is a hobby for me.  I did run into a pro at our conference semifinal (shooting for the host; we were the lower-seed team) who uses an R6 as his primary body, and he's very happy with it.  This facility was about 2 stops brighter than our home court.  I got away with ISO 8000 on the 7DmkII and it works quite nicely on the R7; on the R6 it would be very smooth.  I shot ISO 4000 at this facility, and gave 2/3 stop to the aperture, and gave it another 1/3 stop exposure to get more detail in our dark uniforms.

Yes, the Canon adapter will work fine, including AF etc., but it'll display a warning on any non-cine camera saying it was not designed for your unit.

I use a Metabones EF-RF 0.71x speed booster ultra, which I recommend.

antonio-salieri wrote:

Yes, the Canon adapter will work fine, including AF etc., but it'll display a warning on any non-cine camera saying it was not designed for your unit.

I use a Metabones EF-RF 0.71x speed booster ultra, which I recommend.

Thanks all for replies - I've been considering the metabones too.

Curious if any forum member has tried the Canon 0.71X on the R7 or R10 - also if any unwanted side effects.  Appreciate not technically supported.