https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/Canon-R3-Shutter-Speed-Max-1-200-in-Manual/m-p/414034#M98794 <P>1/200 is the fastest flash sync speed for the R3 which is why it won't let you choose a faster shutter speed when it senses a flash trigger is attached.&nbsp; A faster shutter speed doesn't allow for the camera to properly sync the flash and shutter so it disallows an operation which it isn't capable of properly performing.&nbsp; This is common behavior for both DSLR and mirrorless bodies when using external flashes.&nbsp; IF you have an external flash that provides high speed sync (basically it fires multiple flashes), then in HSS mode you can go with a higher shutter speed.</P><P>But if you were able to command a regular flash to fire at at a fast shutter speed with your R3, you would end up with a bunch of dark bars alternating with over-exposed areas if using a shutter speed faster than the camera's maximum capable sync speed.</P><P>Rodger</P> Wed, 12 Apr 2023 03:07:47 GMT wq9nsc 2023-04-12T03:07:47Z https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/Canon-R3-Shutter-Speed-Max-1-200-in-Manual/m-p/414033#M98793 <P>Trying to underexpose a shot and use commercial flash lighting to highlight. In manual mode it caps at 1/200 but when I take off remote flash trigger it allows me to go to 1/8000. What controls this and how do you turn off? I want the background under exposed with 1/8000 and flash to trigger. I'm lost at what controls this and how to disengage. Thank you in advance!</P> Wed, 12 Apr 2023 02:55:10 GMT https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/Canon-R3-Shutter-Speed-Max-1-200-in-Manual/m-p/414033#M98793 Turfblur 2023-04-12T02:55:10Z https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/Canon-R3-Shutter-Speed-Max-1-200-in-Manual/m-p/414034#M98794 <P>1/200 is the fastest flash sync speed for the R3 which is why it won't let you choose a faster shutter speed when it senses a flash trigger is attached.&nbsp; A faster shutter speed doesn't allow for the camera to properly sync the flash and shutter so it disallows an operation which it isn't capable of properly performing.&nbsp; This is common behavior for both DSLR and mirrorless bodies when using external flashes.&nbsp; IF you have an external flash that provides high speed sync (basically it fires multiple flashes), then in HSS mode you can go with a higher shutter speed.</P><P>But if you were able to command a regular flash to fire at at a fast shutter speed with your R3, you would end up with a bunch of dark bars alternating with over-exposed areas if using a shutter speed faster than the camera's maximum capable sync speed.</P><P>Rodger</P> Wed, 12 Apr 2023 03:07:47 GMT https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/Canon-R3-Shutter-Speed-Max-1-200-in-Manual/m-p/414034#M98794 wq9nsc 2023-04-12T03:07:47Z