Question about Canon Speedlite 580EX II TTL Flash

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I mounted the Canon 580EX II to my Canon 5D Mark II. When I using Manual Mode, I can't set the shutter speed more faster then 1/200 sec. Is this problem normal/limitation of it?

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Yes. If you were able to set a faster shutter speed, then you would not expose the entire frame and would have the shadow of either the first or second shutter curtain (or both) partially masking the frame.

At higher speeds, the shutter is never fully exposed: before the first shutter curtain has finished travelling across the frame, the second one has stated it's journey. All SLR's have this issue and on some older models you could only use a maximum 1/60th of a second.

In practice though, in dark conditions the "slow" shutter speed does not affect exposure as the true exposure will be determined by how much light the flash puts out, and it puts this light out in as little as 50 microseconds (50 millionths of a second) for a modern electronic flash bulb.

Faster shutter speeds can be used successfully, but only with flashes which operate in high speed mode. What they do is to make the flash burst seem longer by rapidly firing the flash bulb many times. This trick can ensure that there is sufficient light to expose the frame at the highest shutter speeds. Shutters which operate at, say, 1/4000 may seem fast, but compared to the speed at which a single electronic flash burst operates, it's an eternity.

Posted on May 24, 2010

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Posted on Jan 02, 2017

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I have the 580 ex2 mounted to a eos 5d mark 2. When up close and zoomed in, the bottom of the photo is dark. The owners manual says to tilt the head down 7 degrees, but its down as far as it will go. Help!


The shadow is caused by the lens and lens shade if you use one. If you are shooting "up close and zoomed in" regularly, get yourself a ring flash. It fits around the end of the lens = no shadow.
Other ideas::
Light it from below/behind or from the side. Put your 580 on wireless, and place it along side the subject. I recommend a reflector on the side opposite the flash.
Use a piece of white paper as your reflector.

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