We'll take a look inside Canon's EOS R

Want to see all the tech inside of Canon’s first full-frame mirrorless camera? We’ll show you what the EOS R has going on behind the lens right here.

The pictures you’re going to see are from an investigation done by Roger Ciacala from LensRentals. Ciacala wanted to explore the design and engineering happening inside a EOS R, so he tore one open. The shots below are from Ciacala’s investigation:

The main PCB in Cannon's EOS R
The main PCB in the camera. Here the shutter motor and electronics are at the bottom now. This differs from the DSLRs which are usually on one side
The top of Canon's EOS R being removed
The top of the EOS R being removed

There’s a lot of empty space in the EOS R

“One thing that struck me is that it’s not very crowded inside there, or as we like to say ‘they left a lot of air inside’,” Cicala writes. One of the big reasons why there’s a lot of space left open in the EOS R is its lack of in-body image stabilization (IBIS). Both Sony’s a7R III and Nikon’s Z have IBIS systems, so there’s less “air” inside of them.

You can see the camera’s air gaps in the picture below with gap between the image sensor and circuit board.

The air gap between the image sensor and circuit board in Canon's EOS R
You can see the air gap between the image sensor and circuit board in this shot

Will Canon’s EOS R include IBIS stabilization in the R series in the future?

Cicala doesn’t seem to think so. He believes that Canon will be more focused on lens stabilization rather than delivering stabilization in-body ““Canon has been very clear that they think lens stabilization is superior. The space is probably just a matter of ergonomics and perhaps heat diffusion. But there’s certainly room for it.”

The weather sealing isn’t too different from the a7R III

It turns out Canon’s EOS R weather-sealing system is similar to the a7R III. This isn’t necessarily a good thing for Canon because Sony met criticism for the a7R III’s weather sealing.

“Well-sealed buttons and dials, not much else,” Cicala says. “That means, I think, that it will be fine in a misty rain for a while, but don’t get it saturated and don’t set it somewhere wet.”

Canon's EOS R's PCB removed
the green image sensor board, the shutter mechanism below, and the black battery box is visible after removing the PCB

If you want to see all of Cicala’s findings, go to his LensRentals blog post.

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Sean Berry
Sean Berry is a blogger and Videomaker Contributing Editor.