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DPChallenge Forums >> Hardware and Software >> please help!!!!! my 5d is sick:(
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Showing posts 1 - 17 of 17, (reverse)
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 05/27/2007 10:17:35 AM · #1
when I use flash (both my softbox and umbrella) with my 5d the lower half of the images become totally black :(
yes, i have checked, nothing is stuck on that side on the lens.
nothing is in front of the lens.
i don't see anything that can cause this!!
when i take out the flash cabel and shoot without flashes everything is fine.
i feel (or just hope) there must be some easy and funny explanation of this, but i am so very worried for my cam
help me please!!
:)
 05/27/2007 10:21:10 AM · #2
What shutter speed are you using when this happens? Is if faster than 1/200?
 05/27/2007 10:23:34 AM · #3
1/500
 05/27/2007 10:27:27 AM · #4
Originally posted by silverfoxx:
1/500

That's your problem, you've exceeded the sync speed of the camera. On a SLR the shutter does not open all at once, so if you use too fast a speed the flash will catch the shutter half open. Try using 1/200.
 05/27/2007 10:28:33 AM · #5
Originally posted by Raziel:
Originally posted by silverfoxx:
1/500

That's your problem, you've exceeded the sync speed of the camera. On a SLR the shutter does not open all at once, so if you use too fast a speed the flash will catch the shutter half open. Try using 1/200.


hurrai!!! hurrai!!:)
thank you, i must start reading manuals properly...
 05/27/2007 10:28:54 AM · #6
Originally posted by silverfoxx:
1/500


Aha! Flash sync speed of 5D is 1/200, so make sure your shutter speed is below 1/200 to avoid this. Problem solved. Note that with some studio flashes with long durations, you might have to reduce shutter speed a little more to get totally rid of the black band.

Edit: boy, waaay to slow, LOL!

Message edited by author 2007-05-27 10:29:23.
 05/27/2007 10:39:24 AM · #7
thank you Fritz:)
 05/27/2007 10:57:08 AM · #8
On the new 1D Mark III Canon has bumped up the sync speed to 1/300 :)

Note that if you use a 550EX or 580EX as fill flash on Aperture priority mode you can go to higher sync speeds by switching the Flash unit to High Sync mode...
 05/27/2007 11:05:08 AM · #9
Whew! Glad that was an easy fix, Svetlana!
 05/27/2007 11:17:09 AM · #10
Originally posted by doctornick:
On the new 1D Mark III Canon has bumped up the sync speed to 1/300 :)

Note that if you use a 550EX or 580EX as fill flash on Aperture priority mode you can go to higher sync speeds by switching the Flash unit to High Sync mode...


thank you! i have one softbox ad one umbrella from bowens, i sill don't know where and if i can change sync speed there:) but i've started reading manuals and will definitely find it out today:)

thank you Slippy!
 05/27/2007 11:21:47 AM · #11
Best let me have that 5D you can have my 300D!

:-)
05/27/2007 11:29:17 AM · #12
Originally posted by doctornick:
On the new 1D Mark III Canon has bumped up the sync speed to 1/300 :)

Note that if you use a 550EX or 580EX as fill flash on Aperture priority mode you can go to higher sync speeds by switching the Flash unit to High Sync mode...


Oddly enough the original 1D that I had had a 1/500th flash sync. Lets go back to that. :-)

MattO
 05/27/2007 11:43:10 AM · #13
When I'm using my strobes I actually have to limit my shutter speed to 1/160th to avoid a slight darkening on one side of the image. I have some older strobes where 1/200th was fine. But I think the speed of these strobes is slower.


05/27/2007 12:00:03 PM · #14
On my 5D it's impossible to go above the sync speed (1/200) when I'm shooting flash. I wonder how how you were able to get to 1/500? I try setting my camera to 1/250 and right when I press the shutter half-way, it goes to 1/200.

Message edited by author 2007-05-27 12:00:20.
 05/27/2007 12:02:26 PM · #15
Originally posted by Tom:
On my 5D it's impossible to go above the sync speed (1/200) when I'm shooting flash. I wonder how how you were able to get to 1/500? I try setting my camera to 1/250 and right when I press the shutter half-way, it goes to 1/200.


If your using a hotshoe flash just put it into High speed sync mode and you can shoot as fast as you want, you just wont get the full effect of the flash. This assuming that the 5D will allow this like all the other canons I have seen.

MattO
 05/27/2007 12:07:18 PM · #16
Originally posted by Tom:
On my 5D it's impossible to go above the sync speed (1/200) when I'm shooting flash. I wonder how how you were able to get to 1/500? I try setting my camera to 1/250 and right when I press the shutter half-way, it goes to 1/200.


That's true if the camera knows about the flash, as it will if you have a flash mounted to the hot shoe. If, however, you're using the PC synch socket, the camera will just send the trigger signal.
 05/27/2007 12:09:32 PM · #17
Originally posted by kirbic:
Originally posted by Tom:
On my 5D it's impossible to go above the sync speed (1/200) when I'm shooting flash. I wonder how how you were able to get to 1/500? I try setting my camera to 1/250 and right when I press the shutter half-way, it goes to 1/200.


That's true if the camera knows about the flash, as it will if you have a flash mounted to the hot shoe. If, however, you're using the PC synch socket, the camera will just send the trigger signal.


i only use that pc socket, a wire:) so i can go much faster than 1/500
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