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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 14 Sep 2013 (Saturday) 10:00
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Problem with my 580 ex II green light and massive bursts of light.

 
Salma
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Sep 14, 2013 10:00 |  #1

Hey guys.

I have been trying to take some product light box shots never experienced any issues prior to this but since yesterday I want to pull my hair out. :cry:

Ok so the problem is that when my flash faces the ceiling and i'm taking normal photos around the house it is functioning absolutely perfect but when I hold the camera in the light box and the flash faces inside the top of the light box, I take a picture and I notice the red light turn to green all the flash setting disappear and it just says ETTL in the top corner and the image is so over-exposed that you can't even see the product, just pure white.

Why is it that outside of the light box the flash is functioning fine and inside it gives out massive bursts of flash? What am I doing wrong?

I have changed the batteries numerous times to fully charged ones, the batteries I am using are duracell rechargable ones which are pretty good but then i've also tried my cheapo Active energy batteries and I have the same problem, mega bursts in the light box and normal shots with good flash outside the lightbox.

Please don't tell me my flash is damaged. :cry:


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Salma
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Sep 14, 2013 10:13 |  #2

Ok i've just tried again and I noticed that when I tilt the flash at an angle that's when it gives out massive bursts.


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dedsen
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Sep 14, 2013 10:23 |  #3

You have a flash to hot shoe connection problem. A bad connection causes a full power dump. Make sure the flash is all the way in the hot shoe and is tight.

Is the hot shoe on the camera tight? There are small screws under the spring plate that can come loose.

Are the side rails of the hot shoe bent up and not holding the flash down tight in the shoe?

Try cleaning the contacts on both the camera and the flash.



  
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Heath
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Sep 14, 2013 12:18 |  #4

How close do you have your flash to the object you are shooting?

Depending on the aperture you are shooting at, you can only use your flash so close to your object. If you are too close, everything will be overexposed.

Check the bottom edge of the LCD on the flash. After you have set the aperture, in TTL mode, it will tell you the minimum and maximum distance the flash can work in.


Heath
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Courierman
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Sep 15, 2013 04:02 |  #5

think its the modeling light function when you press the DOF button on the camera, left side of lens


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Wilt
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Sep 17, 2013 15:52 |  #6

Canon flash design suffers for some reason from poor electrical contacts, causing the ETTL camera's command for a particular amount of light to not be heeded by the ETTL flash, resulting in full power output blasts. On my camera, my flash (non-Canon) contact is good in the camera hotshoe mostly, but mostly poor with my Canon off-shoe extension cord (I have tried two different models of Canon cord, plus two aftermarket cord brands, and the same problem exists for all!)


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Salma
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Sep 20, 2013 19:43 as a reply to  @ Wilt's post |  #7

dedsen wrote in post #16295912 (external link)
You have a flash to hot shoe connection problem. A bad connection causes a full power dump. Make sure the flash is all the way in the hot shoe and is tight.

Is the hot shoe on the camera tight? There are small screws under the spring plate that can come loose.

Are the side rails of the hot shoe bent up and not holding the flash down tight in the shoe?

Try cleaning the contacts on both the camera and the flash.

Hi there, thanks for reply. I did actually check to see if the hot shoe on the camera was loose, it was and I made it tighter but even after that the flash it giving out massive bursts and going into TTL mode. I'm thinking I may need to take it to a camera shop and have it looked at.

Heath wrote in post #16296091 (external link)
How close do you have your flash to the object you are shooting?

Depending on the aperture you are shooting at, you can only use your flash so close to your object. If you are too close, everything will be overexposed.

Check the bottom edge of the LCD on the flash. After you have set the aperture, in TTL mode, it will tell you the minimum and maximum distance the flash can work in.

Hi, I don't shoot too close to the object, I'm sure there's a problem with my flash and it happens when I tilt it at a forward angle.

Courierman wrote in post #16297479 (external link)
think its the modeling light function when you press the DOF button on the camera, left side of lens

Hi, it isn't that :(


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Tiberius
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Sep 20, 2013 20:54 |  #8

I had the same problem with my 580. The cause was a poor seating in the hotshoe, even though it felt solid to my touch. A rocket blower to clean out any stuff from the hotshoe could help, maybe a toothpick to get under the rails.


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Problem with my 580 ex II green light and massive bursts of light.
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