Fuji X-H2S: reduced screen refresh rate when shooting 24p/30p?

When shooting at lower frame rates (23.98p, 24p, 25p, 29.97p), the screen and EVF refresh rate on my X-H2s drops, seemingly matching the selected video frame rate.

This happens irrespectively of the shutter speed, of whether I'm recording or not, and on all power management settings (performance boost/normal/economy, low light/resolution/frame rate priority). I've also just installed FW 3.0, to no avail.

My old X-T3 didn't do this. Am I missing a new setting on the X-H2S?

Cheers,

Would really appreciate if somebody with an X-H2S can try to replicate this issue.

I assume it's user error (too glaring to be a bug and too specific to be a manufacturing defect) but for the life of me I can't find the setting that's causing it.

Many thanks,

NischP wrote:

Julesvernex2 wrote:

Would really appreciate if somebody with an X-H2S can try to replicate this issue.

I assume it's user error (too glaring to be a bug and too specific to be a manufacturing defect) but for the life of me I can't find the setting that's causing it.

Many thanks,

Did changing between M Shutter and E Shutter produce any different results?

Some results irrespectively of the shutter type, I'm afraid.

In the meantime, I tried my old X-T3 again I noticed the same issue, although it's much less apparent because the EVF is not nearly as good as the one on the X-H2S. I then tried to shoot some video on the Sony A7RV, which also has a great EVF, and bumped into the same issue.

So, dropping the screen/EVF frame rate to the recording frame rate seems to be standard practice across cameras? Surely I'm not the only one that gets queasy when the refresh rate drops from 120p to 24p, particularly when panning with a long lens?

left eye wrote:

I presume you know this is to avoid Three-Two Pull-down.

I do not, so bear with me if I veer off-track (just coming into video from photography): is the issue that the camera can't read the sensor and refresh the EVF at 120fps, as 120 is not a multiple of 23.97, resulting in the need for a three-two pull down of sorts?

If so, what is the technical limitation/drawback for using instead a refresh rate that is a multiple of the recording frame rate e.g., 119.85?

left eye wrote:

Julesvernex2 wrote:

left eye wrote:

I presume you know this is to avoid Three-Two Pull-down.

I do not, so bear with me if I veer off-track (just coming into video from photography): is the issue that the camera can't read the sensor and refresh the EVF at 120fps, as 120 is not a multiple of 23.97, resulting in the need for a three-two pull down of sorts?

If so, what is the technical limitation/drawback for using instead a refresh rate that is a multiple of the recording frame rate e.g., 119.85?

You are quite correct on all counts.

Cameras with only 60Hz display panels (most have been up till now, and including most laptops - 60Hz also), result in regular judder as occasional frames need duplicating (unless you're shooting/playing back 30fps or 60fps).

I'm not sure why you'd shoot at 23.98fps (or 23.876) these-days? - more generally 24fps works fine and is now the cinema standard. Whichever, as you say they are not perfectly divisible into 120.

Why a 120Hz panel that is capable of variable rate display, cannot run at 48Hz or 96Hz - (for playing 24fps footage smoothly) I'm not sure. My explanations run out here, someone else will need to pick up the baton!

Thank you, that's very helpful, I think I now grasp the relation between refresh rate and frame rate (and I've also updated settings from 23.98p to 24p, per your suggestion).

Will continue to dig into that second point of using a multiple of the frame rate for the refresh rate!