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Old Jan 12, 2012, 8:48 AM   #1
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Default Sigma EF-500DG Super... misfiring

I have a problem with my Sigma EF-500DG Super flash which I'm currently using on my Nikon D3000. It has a habit of misfiring on a continual basis and it's driving me nuts. Basically out of 10 shots using TTL, it will get 1 good shot while the other 9 are misfired and dark. I've been using it with Multi mode or manual mode for the time being but i'd like to know why TTL is screwing up badly. Is it time for a new flash or is it a software problem?

Thanks.
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Old Jan 12, 2012, 12:43 PM   #2
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G'day Steve

Dunno mate - but I would be very interested in the solution

Regards, Phil
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Old Jan 17, 2012, 12:08 PM   #3
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There were some model Sigma flashes that needed to be re-chipped to work with some cameras. Not sure of the combinations, but you could probably find out on their website.
There is also the possibility that there is some dirt or corrosion on the contacts of the flash or hotshoe. Try cleaning them with some alcohol. In more extreme cases, using a pencil eraser, and then a soft brush to remove the residue from the eraser.

brian
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Old Jan 17, 2012, 12:26 PM   #4
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I've experienced "misfires" with my Canon 580EX II, however this usually only happens when my batteries are getting low and I'm firing a fast sequence of shots; basically, I'm not allowing it to recharge.

When you say 90% are miss fires / dark, is this a slow sequence of photos or a rapid fire set?
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Old Jan 18, 2012, 9:06 AM   #5
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I went to the effort of borrowing some other Nikon bodies for the day. I borrowed a D90 and my brother's D50. Both set in Aperture priority with flash on TTL and everything else pretty much automatic. Same problem... it still misfires. Also cleaned the hot shoe... no help.
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Old Jan 18, 2012, 1:39 PM   #6
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Does the flash zoom in and out with the lens? If not, this would indicate a communications problem between the flash and camera. Since you have tried it with other bodies, the problem is almost certainly with the flash. The base on one of my flashes was a little off, and I had to trim it a bit in order to get it to fit fully on the shoe. Sometimes it still needs a bit of wiggling in order to get all the contacts to line up right.
Are you getting a ready indication before you shoot-(the green light)?

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Old Jan 18, 2012, 5:45 PM   #7
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Are you sure it's a Nikon compatible model? It should have an "NA" on the name plate. Sigma makes models compatible with the major camera brands and they aren't interchangeable.
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Old Jan 19, 2012, 3:50 AM   #8
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hi I had some odd probs when i got my nissin di622 it turned out to be the type of rechargables i was using they had to be above 2000mah. changed them and no more problems
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Old Jan 19, 2012, 11:27 PM   #9
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Yeah, it zooms in and out as you change the zoom on the camera. The ready light is always on before I take a photo so I know that it's ready. I use Sanyo Eneloop batteries and not cheap rechargeables. The Flash is definitely Nikon compatible... it says i-TTL [NA]
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Old Mar 9, 2012, 7:49 AM   #10
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hello
i too had misfiring issues in APERTURE PRIORITY MODE
with both my sigma and my canon 580exll
switched to Manual mode and all is fine
dunno the answer though
sorry man
good luck
pete
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