My setup: Tamron 70-180mm f/2.8 Di III VXD for Canon EOS R - works great! The optical stabilization is very good The image quality out of the box is very good.

I can warmly recommend Tamron 70-180mm f/2.8 Di III VXD for Canon EOS R. The weather sealing is sufficient even for outdoor shooting The fast autofocus makes everything feel responsive and accurate.

My personal experience: I've tested various lenses, and Tamron 70-180mm f/2.8 Di III VXD was superior in all tests. The image quality remains excellent even in challenging lighting conditions, which is important for professional work. Very good future-proofing through modern technology and reliable performance.

My tip: Canon RF 70-200mm f/2.8L IS USM is ideal for Canon EOS R. The low light performance is excellent The controls are intuitive and easy to use.

Tamron 70-180mm f/2.8 Di III VXD - best option for Canon EOS R currently.

For Canon EOS R definitely Tamron 70-180mm f/2.8 Di III VXD. Very good image quality for the price.

For Canon EOS R I would take Canon RF 100-500mm f/4.5-7.1L IS USM without hesitation. The color rendition is impressive The build quality feels premium and should last for years.

Long-term experience: Using Canon RF 100-500mm f/4.5-7.1L IS USM for over a year and am thrilled. Have researched for a long time and this lens was the best choice. The image quality clearly exceeds my expectations. Very good price-performance ratio, can only recommend further.

For Canon EOS R I would definitely recommend Canon RF 100-500mm f/4.5-7.1L IS USM. The reliability is very good The image quality out of the box is very good.

Totally agree that the L-series zooms are the benchmark, but looking at current community trends and raw performance data, I have to mention the Canon RF 100-400mm f/5.6-8 IS USM. It’s often overlooked because of the slow variable aperture, but the technical trade-offs are actually very well-managed for the EOS R sensor. Here is why it's a strong technical choice based on the specs:
* Focus Transients: The Nano USM drive is incredibly snappy. It handles focus racking and subject acquisition much more efficiently than the heavier elements in older adapted EF glass.
* Chromatic Aberration: The inclusion of specialized UD (Ultra-low Dispersion) lens elements means longitudinal fringing is virtually non-existent, even when shooting high-contrast subjects at the 400mm focal length.
* AF Coverage: While f/8 at the long end sounds restrictive, the Dual Pixel CMOS AF on the R body is rated to function at f/22, so you still maintain 80% x 80% frame coverage. Basically, it’s a light-hungry lens, but the MTF charts show it's impressively sharp wide open. If you’re doing handheld wildlife or hiking, the weight savings are a massive ergonomic advantage over the 100-500. Tbh, it’s the best "bang for buck" tele in the RF lineup right now.

Big if true

Can confirm

This ^