Shutter speed Limits while using internal flash!!! 550d

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Postby Xkey » Mon Jan 30, 2012 3:40 pm

Hi

Ive recently bought the canon 550d and was looking into getting a underwater housing. The Sea & Sea RDX550d is looking very appealing.

But after taking several shots and slowly learning the camera ive come across a restriction of the cameras shutter speed while using the internal flash to trigger my Sea&Sea YS110a strobe (Optically). U can only use speeds of 1/200 or slower while the flash is popped up!!!

So..... My question is does anyone know how to get around the fact that i will be using the internal flash to trigger a strobe but may require a faster shutter speed than 1/200 sec :?

Is there a menu option i haven't come across or possibly a firmware update to get around the limitations.

Any help is much appreciated

Xkey :)
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Postby scottg » Thu Feb 02, 2012 3:52 pm

Xkey,

You are correct, 1/200th is the limit. There is no way around it. In general, people are fine using 1/200th - if they want to block out more ambient light they simply close down the aperture. In general it will not be a huge deal. The strobe will freeze any moving subject that it lights up.

hope that helps,
Scott

Scott Gietler Owner/Editor, Underwater Photography Guide & Bluewater Photo http://www.uwphotographyguide.com http://www.bluewaterphotostore.com

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Postby Xkey » Fri Feb 03, 2012 12:43 pm

Cheers for the reply Scott

Ive just done a little more research about the limitation and found that that is the highest X-sinc (Full curtain opening) my camera has is 1/200 while using the flash, my issue was will this not cause motion blur if i require a higher shutter speed for the worlds fastest nudi or something ;)
But looks like I'll just have to maybe try panning... lol

scottg wrote:
The strobe will freeze any moving subject that it lights up.

Like a rabbit in your headlights ;)


Thanks again Scott for your help

Xkey
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Postby scottg » Tue Feb 07, 2012 2:43 pm

hi XKey - you are very welcome. Post some photos soon! - Scott

Scott Gietler Owner/Editor, Underwater Photography Guide & Bluewater Photo http://www.uwphotographyguide.com http://www.bluewaterphotostore.com

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