In my experience, if you're shooting C-Log 3 on the R5 or R6II, you really gotta go with the Atomos Ninja 5.2-inch 4K HDMI Recording Monitor. It’s pretty much the gold standard for Canon RF setups cuz it handles the 4K/60p metadata perfectly and the 1000-nit screen is bright enough for outdoor work. If you dont need external recording and want to save weight on a gimbal, the SmallHD Ultra 5 Bright Touchscreen Monitor is actually insane—the PageOS tools are way more precise than the competition. Seriously, just make sure you use a high-quality Atomos High Speed HDMI Cable 4Kp60 to avoid those signal drops you mentioned... I've tried many cheaper cables and they're just not worth the headache. Anyway, those are my go-tos for staying sharp without adding too much bulk... cheers!

> In my experience, if you're shooting C-Log 3 on the R5 or R6II, you really gotta go with the Atomos Ninja... Seconding the recommendation above! If you need to record ProRes externally to bypass internal limits, the Atomos Ninja 5.2-inch 4K HDMI Recording Monitor is definitely the gold standard. But honestly, if youre like me and just want to nail focus and exposure without spending a fortune, there are some budget-friendly 'monitor-only' options that work pretty well. I've been using the PortKeys PT6 5.2 Inch 4K HDMI Touchscreen Monitor on my R6II and I’m super satisfied with it. It’s light, handles C-Log 3 LUTs perfectly, and the UI is simple to learn. If you're worried about sunlight, the Feelworld LUT6 6 Inch 2600nit Ultra Bright Touchscreen is a beast. Its high-key bright—basically no sun hood needed—and costs way less than the high-end brands. Just a heads up: most 'signal drops' are actually just bad cables. I switched to the Zilr 4K HDMI to Micro-HDMI Cable 45cm and havent had a single flicker since. If you dont need external recording, saving that cash for better glass is the way to go! gl!

Like someone mentioned, the HDMI cable is usually why people see those signal drops on R5/R6II setups, so definitely grab a high-quality one first. Looking at the suggestions so far, people are split between the Atomos recording ecosystem and the high-end monitoring tools of SmallHD. I've been through a dozen monitors over the years and for a performance-focused rig, you should consider the interface too. Being able to change settings without shaking the camera is huge:

• PortKeys BM5 III WR 5.5 Inch Touchscreen Monitor
• This is a personal favorite because it supports wired camera control for Canon. You can trigger recording and adjust settings on the screen, which is a lifesaver on a gimbal.
• Desview R6 UHB 5.5 Inch Ultra High Brightness Monitor
• If you're literally just fighting the sun, this hits 2800 nits. Its basic, but it works and is very lightweight.
• SmallHD Indie 7 7-Inch Smart Monitor
• If you want the best software tools (PageOS) on a larger screen without the Ultra price tag. Basically, the 5-inch models are better for gimbal work to keep the motors from straining, while 7-inch is better for tripod setups where focus is the priority. Just make sure whatever you get has a pinch to zoom feature that actually works well... trying to nail focus at 4K without it is a nightmare.

Just wanted to say thanks for everyone chiming in. Super helpful discussion.

Interested in this too

Agreeing with Isabella—honestly, unless you specifically need ProRes for a client, carrying a recorder is just extra weight you don't need. Over the years I've seen so many people complain about signal drops on RF bodies, but tbh it's usually just a cheap cable failing at 4K/60p. Pick up a Zilr 4K HDMI 2.0 Cable or a high-quality Kondor Blue Braided HDMI Cable and that issue usually vanishes. For a super reliable display, I've been using the PortKeys LH5P II 5.5-inch 2200nit Touchscreen Monitor on my R5 and it's a beast. The 2200 nits is actually enough for bright sun without a hood, and the Bluetooth camera control is a game changer for gimbal work since you can trigger the camera from the monitor screen. If you want something lighter, the Atomos Shinobi 5-inch 4K HDMI Monitor is basically the industry standard for a reason. It's got the same great tools as the Ninja but it's way easier on your batteries and doesn't get as hot during long 4K shoots. Both have solid LUT support which is essential for nailing the look in C-Log 3.

Bump - same question here

Quickly jumping in here since I have seen my fair share of gear fail on sets. For long-term reliability on the R5 and R6II, you might want to consider the Blackmagic Design Video Assist 5 inch 12G HDR. I have owned one for over two years and the signal stability is rock solid compared to cheaper alternatives. Be careful with some of those super-budget brands; they often overheat or glitch out during long 4K/60p sessions, especially in the sun. If weight is your absolute priority for gimbal work, the Osee T5+ 5.5 Inch 1000nits On-Camera Monitor is a hidden gem. It is quite affordable but the software is actually designed well for exposure tools like waveforms. Just make sure to get a decent mount for it because the plastic body feels a bit light. Also, a quick warning on those RF bodies: that micro HDMI port is the weakest link in the chain. I would suggest always using a cable clamp or a dedicated cage like the SmallRig Camera Cage for Canon EOS R5 and R6 2982B to protect the port, or you will eventually face signal drops regardless of which monitor you buy.