EOS R5 Mark II loses focus across multiple shots

[jrevenson]

I have a R4M2 and am shootong oblique images from an aircraft. Angle is about 40 degrees, altitude 200 feet, using a 100mm lens travelling at 45m/sec (85 knots). I am using an intervelometer to shoot once per second. I have yet to find AF settings that will capture focus well. Using the R5M1 with more case settings I was able to set the settings so it found focus on most all images, even if over calm water. Using the R5M2 it quickly loses focus (most of my shots are out of focus if I dont set it to focus priority, If I set it to focus priority then there are large caps between frames when focus is not found.

Any recommendations would be greatly appreciated - as this should not be so difficult to figure out.

Thanks,

-je

[Waddizzle]

Welcome.’

The answer to your questions can be found in the pillars of photography, Exposure Triangle and Depth of Field.  You have not provided sufficient information to provide a specific or detailed response.  For example, how far away are your subjects, what focal length lenses, and what type of light conditions?

I have found that I can use an ultra wide angle lens set to the “hyperfocal” length and shoot all day long without having to refocus.  Everything from about 3-4 feet away to infinity is always in focus.

[avagrace234]

For the R5M2, use AI Servo AF with Tracking for moving subjects, and set AF Tracking Sensitivity to Responsive. Choose Spot AF for precise focus. Set AF-ON button for focus control, and experiment with Custom AF settings (Case 2 or 3 for fast-moving subjects). Adjust AF speed and tracking in the menu for optimal results.

[p4pictures]

Hello and welcome to the community.

The EOS R5 Mark II is a little different to your older EOS R5 (Mark I), but still has the possibility to set the AF case similar to the older model. If you select AF Case Manual, then you can change the settings for tracking sensitivity and acceleration / deceleration tracking the same as is possible with the cases in the older camera. 

https://cam.start.canon/en/C017/manual/html/UG-04_AF-Drive_0090.html 

One of the big differences in between the R5 Mk1 and R5 Mk2 is that it can track and do subject detection with any of the AF areas. The old one can only do that with face + tracking. It would be good to know what AF area you used on the old camera and what you are using on the new one?

Canon did put a pretty extensive AF settings guide online for the EOS R5 Mark II and this covers quite a lot of settings and when / how to make use of them in real world situations. 

https://cam.start.canon/en/C017/guide/html/index.html