Sabrina05cp wrote:so i setup my camera at 60hertz
If you mean by that setting the camera in the setup menu to "flicker free shutter based on" = 60Hz - that alone won't do it, it's mostly meant for light refresh rate.
You must make sure that your shutter is in sync with the refresh rate of the projector.
If there is an arbitrary/non-standard/unknown refresh rate
In your case change the settings of the camera to show you the shutter based on angle not speed.
-> menu -> setup 1st. page -> shutter measurement = shutter angle
Now the camera will show you the shutter in angle in degrees not in fractions of seconds.
The reason for using this is that you can dial in more precise values via angle than via speed.
Let's say you are shooting a 60p project.
Set the shutter to 180° if the projector is using a 60 Hz refresh rate. If you are changing the shutter speed you can use the <> or the dial to jump to speed presets. But you can also double tap the <180°> and get a number dial window to open. There you can set any value you want.
Calculate you shutter angle like this:
shutter angle = (shutter speed * 180) / fps
fps ... camera project frame rate in frames per second
So if the projector is using 59.94 Hz then your shutter angle for 60p is:
(59.94 * 180) / 60 = 179.82°
You might have to variate the angle a bit to completely sync to the projector like 179.81 or 179.83 and so on.