Question about Sigma EF-500 DG for TTL Flash

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Problem with underexposed pictures

When I use FV-lock the first picture is exposed correct, but the next is underexposed. This problem actually only appears when I masseur the light on a dark spot.

Posted by Borge on

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I've got the same problem with my new ef 500 dg super and my ef 530 dg super. It occurs on all nikon camera's I could get.
D70, D80 and Fuji S5 Pro. I don't have this problem with an old (4 years) sigma ef 500 dg super.
I will try to contact Sigma for this problem.

Posted on Jan 07, 2008

  • Anonymous Jan 07, 2008

    Today I spoke with Sigma Benelux.
    They do not recognise this problem however they are willing to dive into it.
    In the next few weeks I hope to get an answer.
    I am going to upgrade my old EF 500 DG Super with the new firmware to work with my S5 pro.

    Then I can see if it is a firmware or a hardware problem.
    I think it's a firmware issue.

    Keep you posted.

  • powersource
    powersource Mar 27, 2012

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1 Answer

How do I reduce what looks to be over exposure on zoom?


There are so many causes, why a camera can over or underexpose. If you put the main dial on the camera logo or on the camera logo with the P next to is, every picture should be correct. Only when you have chosen for scene and the wrong scene is selected, you fool the camera.
If the main dial was not on one of the two logo's put it there and test.
Later look in the manual to see how you could improve a picture to your wish, if you want to shoot a fast moving object of a portrait.

Jun 06, 2014 | Sony Cyber-Shot DSC-F717 Digital Camera

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The camera will not expose pictures properly; they are underexposed inside, or overexposed outside. The exposure adjustment feature is set in the middle or neutral mode. Changing the iso does not help. ...


It sounds like the light meter in the camera itself is probably broken and needs to be taken to a repair shop. Try using it in manual mode until you can get it fixed.

Mar 22, 2011 | Canon EOS-20D Digital Camera

1 Answer

Whenever I take photos in shutter priority mode, all the pictures seem to be UNDEREXPOSED not overexposed like most people say it is. It also says LO where the f-stop number should be. PLEASE HELP!


Your shutter speed is too fast. The correct exposure requires a lens aperture larger than physically possible on the lens. That's what the "LO" is telling you. Slow down the shutter speed until the "LO" goes away. Alternatively, increase the ISO sensitivity (or a combination of both).

Just because you can set the shutter speed to whatever you want doesn't mean you can get a properly exposed photo at that shutter speed. There may be too little light (as in your case) or too much light. You have to use a shutter speed appropriate for the subject and the light conditions.

Dec 20, 2010 | Nikon D3100 Digital Camera

1 Answer

LCD screen is very dark, Pictures taken are underexposed


If the pictures show up normal on the computer then the back light for the LCD is going bad.

Apr 05, 2009 | Canon PowerShot A640 Digital Camera

1 Answer

Flash not firing properly


Could be the metering mode you are in. Could be the subject is too far away. Could be ISO is set wrong. Could be the lens aperture can't open up enough. Could be the exposure compensation isn't set correctly. Could be FE Lock is still on and the composition has changed. Does the <flash> icon continue to blink? Then you are too far away.

Sep 12, 2008 | Canon EOS 400D / Rebel XTi Digital Camera

1 Answer

I have a very nice 35 mm nokia camera with a zoom lens and lately when i get the pics developed, the pics come back blank or black. what could be the problem?


Black pictures mean under exposed or un- exposed film

Underexposed film can mean incorrectly set up or metering failure
Un exposed film simply means the shutter has failed
Open camera and look through the back and operated the shutter
Does it work?

Sep 02, 2008 | Cameras

3 Answers

SONY DSC-W100


it can be possible to select reset icon by selecting menu option.  
it is not possible to take this type of pictures because at auto flash mode the subject can't be covered witin flash range .therefore picture may underexposed however the forground within flash range may correctly exposed.If we do all this at flash off mode the motion of subject will appear  as blurred due to slow shutter speed.

Oct 04, 2007 | Sony Cyber-shot DSC-W100 Digital Camera

1 Answer

Nikon D50 flash not synchronizing


Ok this is a crappy fix but it works for me.

If your flash isn't syncing correctly make sure your on auto flash. when your flash flips up and you get the beep push the piece that holds the flash just a little forward. and walla your flash syncs up.

Sep 25, 2007 | Nikon D50 Digital Camera with 18-55mm Lens

1 Answer

Underexposed, grainy images with a light stripe running down the center


Sounds like your shutter curtain is malfunctioning. Did you bump the curtain when u loaded film & bed it... Take a close look to see if it is binding. This is a very fragile area to monkey with & should be done by a qualified repairman

Jun 26, 2007 | Canon EOS Rebel K2 35mm SLR Camera

1 Answer

Pictures are underexposed


When you are photographing scenes with mostly light objects (for example, snow, water, and sand), the picture is usually underexposed (darker than it really is). The camera meter registers the brightness of the scene and tries to set the camera lens and aperture for an exposure based on average brightness levels (18% reflectance) causing it to underexpose, as in the following picture. When you are photographing scenes with mostly dark objects (for example, shade, shadow, and overcast skies), and very few light objects, the camera may overexpose the image, causing it to be too light. If you have a flash on your camera, you can compensate by adding "fill flash" for some extra light. If your camera has an exposure compensation adjustment, you can increase or decrease the exposure to correct for these exposure problems. Increase the number to make the image lighter, and decrease the number to make the image darker. You may want to try a series of shots with different exposure compensation adjustments to get a feel for how much difference these adjustments make.

Aug 29, 2005 | Kodak EasyShare CX7530 Digital Camera

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