1/200 max shutter with on board flash? Same with external flash?

Started Dec 15, 2003 | Discussions thread
Stevil Senior Member • Posts: 1,489
Re: "High-speed sync"

Sorry to be dense (and I know that this has been explained several times on this forum), but at shutter speeds higher than 1/200s, it actually takes longer to expose the entire sensor than at low shutter speeds?

Doug Kerr wrote:
Jason,

Jason wrote:

I've noticed that the camera doesn't allow you to set the shutter
speed to anything higher than 1/200 when using the onboard flash.
Does this still hold true if you use an external flash like the 550
EX or Sigma 500?

The 550EX offers a "high-speed sync" mode (the name is a bit
misleading) which allows operation with higher shutter speeds than
the limit resulting from the use of a focal-plane shutter (1/200 in
the case of the 300D).

If that mode is not used, then the same limit applies. Again, it is
a creature of the use of a focal-plane shutter in the camera.

Best regards,

Doug

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