EOS 300D Shutter Speed Restricition.
Re: EOS 300D Shutter Speed Restricition.
WilbaW wrote:
electrolux wrote:
2 Days ago I bought an EOS 300D for £50 from eBay with 18-55mm lens! (bargain), but I've noticed that when I use the internal flash I'm restricted to 1/200sec shutter speed rather than the full 1/4000thsec which I can do without the flash, I presume this is due to the flash being incapable of working fast enough (correct me if I am wrong).
Thanks for the invitation.
It's not really the flash, it's the shutter. It is comprised of two physical "curtains" that chase each other across the sensor (the first one begins to expose the sensor, then 1/S seconds later the second one begins to cover the sensor). The on-board flash fires a single pulse of light to illuminate the subject. 1/200 is the shortest time in which the whole sensor is exposed at the same instant. If the camera would let you fire the on-board flash at say 1/4000, the image would be a glimpse of the subject through a narrow slit between two black shadows.
Does that mean if I get an external high-speed flash/speedlight (meaning one capable of such speed) will I be able to use the high shutter speed with a flash?
Yep, an HSS flash fires a series of pulses so that the subject is illuminated more or less continuously while the sensor sees it through the moving slit.
What he said.
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