Question about Canon SPEEDLITE 580EX TTL Flash

3 Answers

Flash goes off on its own

I have a canon 1d and 1ds. I have been having problems with my 580 flashes going off on their own.
It's as if there is a short somewhere.
I have a friend that has the same problem.
Any ideas?

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3 Answers

Re: Flash goes off on its own

Solution #1
Posted on 12/21/07
was eltroman

Posted on Dec 22, 2007

Re: Flash goes off on its own

To all photographers:

Never thought that 35mm body can kill a medium format body.

I just don't understand why we, the photographers, put up with these companies that sell digital cameras with only about 60% optics coverage. And those lens are saying, "Designed for Digital". Try to put those on the 5D, 1Ds Mark II, 1Ds Mark III and D3 or film camera, you well be pissed #%%^!

If you purchased those L and ED lens you wants full optics sharpness from corner to corner. I don't expect my Porsche 911 Ruf Turbo or my T-Rex to lose when racing against a VW!
Nor, do I want Porsche to says, "Designed to drive in New York City, during rush hours!"

Look at Olympus/Panasonic/Leica, with 4/3 format. They said we designed this camera from the ground up. Did you look at those senors & lens! You are paying for a very high price for getting 50% smaller optics area and carrying twice the weight of the lens, worst using 50% of that great optics! Because all marked focal number have a multiplying of 2.

Well, Olympus came out with the E3, not a so called full chip or equal to 24mm X 36mm optics of the lens.

Take an examples: They are selling a 14-35/2.0 which is 28-70 and 300/3.8 which is 600. Did you know that the 300 cost more than the true 600/4 on a Canon & Nikon? Yes, it over $9,000.00 USD!

To have full optic of the lens will hit you $2,500.00 on that beginner camera, 5D

Then $5,500.00 for the D3

And $9,500.00 for 1Ds Mark III. I guess this company cannot count higher than 1!

Well, back to helping you all.

Make sure you fully discharged the camera's battery before charging it on that AC Adapter.

93% of photographers as well as laptop owners are not aware of this.

Unless you like to support Canon's battery department or sell your camera after using it for 3 years.

Any comments will be greatly appreciated.

Thank you.

Posted on Dec 22, 2007

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Re: Flash goes off on its own

Make sure that you parked (pushed) the flash all the way to the front of the Hot Shoe until it will go no more, then turn/lock it down. Check to see if you can move flash around. You should not, means it's still loose and shorting with ground.

If you take the flash out, will the flash fires by itself?
Try pushing in one contact pin then two and so to see if flash goes off.

Still having problem.

Remove 4 AA batteries or when the flash goes off, turn off flash and remove batteries.
Wait for about two days.
Get Auto Brake Cleaner, comes in spray can, and sprays into the contacts. Best if you have Carb Cleaner instead of brake.
You can spray into a small cup and use a Qtip to clean.

Notes: Wear safety glasses and don't spray to much.
Spray and same time push those contacts in & out
DO NOT put batteries in or use until after 4 or 5 days.

Still, no luck. Then use a DVM to check.

Hope they are helpful.


Posted on Dec 21, 2007

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