Does Canon EOS R Firmware v.1.4.0 Make a Difference?

Does the Canon EOS R firmware update v.1.4.0 make a difference? Absolutely! Your EOS R got a free upgrade.

It's been a month since Canon EOS R Firmware v.1.4.0 was made public and I've been asked about its performance (more than once). Quite simply, this update brings a great improvement to the AF system.

Prior to installing the update, I created a controlled eye-detection AF test. The test was not highly technical – the longest distance that the EOS R would show a stationary subject's eye being detected by a specific lens and focal length was determined and recorded. It was not difficult to determine whether or not the new firmware delivered an advantage. That test revealed that v.1.4.0 shows the eye detection box in the viewfinder from a distance 3x farther away (3x-smaller eyes) than the previous firmware version did. The difference is very obvious.

While I was happy with the R's eye-detection AF performance prior to loading the update, it is especially reassuring to see your subject's eye being indicated in the viewfinder and this update is a good one. That your camera gets this update for free is especially good.

Learn more about the Canon EOS R in our review.

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