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New Contributor
Posts: 3
Registered: ‎05-01-2016

40D built in flash fires but no effect on photo

My 40Ds built in flash fires but it has no effect on the photograph. The flash seems to be out of scync with shutter. It does fire for each photo as well as focusing. I've tried different lens. I've cleared all camera settings and the problem is still there. Need help

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Reputable Contributor
Posts: 809
Registered: ‎11-14-2012

Re: 40D built in flash fires but no effect on photo

Slower shutter speed than 1/200 sec?
DCS 3c, DCS 520, D30, D60, 1Ds, 300D, 30D, 1000D IR, 7D, 6D, 6D, M5
15-45/3.5-6.3 IS, 16-35/4 IS, 22/2, 24/1.4 II, 24-105/4 IS, 50/1.4, 85/1.8, 100/2.8, 70-200/2.8 IS II, 300/2.8 IS
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Honored Contributor
Posts: 6,414
Registered: ‎11-13-2012

Re: 40D built in flash fires but no effect on photo

How do you know it isn't having an effect? What are you photographing? What camera mode/settings?

John Hoffman
Conway, NH

1D X, Rebel T5i, Many lenses, Pixma PRO-100, MX472, LR Classic
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New Contributor
Posts: 3
Registered: ‎05-01-2016

Re: 40D built in flash fires but no effect on photo

I know it is not having the expected effect as I have been using it for some years now and have got to know what to expect when it is used. It does not work in any mode. Even in Auto mode.

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New Contributor
Posts: 3
Registered: ‎05-01-2016

Re: 40D built in flash fires but no effect on photo

It doesnt work correctly at any shutter speed
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Honored Contributor
Posts: 6,414
Registered: ‎11-13-2012

Re: 40D built in flash fires but no effect on photo

Since you have verified that all settings are the same when the flash performed correctly and now it doesn't it must be a camera defect. 

 

Try resetting all camera settings to default, and if that doesn't work it looks like service is necessary. 

John Hoffman
Conway, NH

1D X, Rebel T5i, Many lenses, Pixma PRO-100, MX472, LR Classic
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