400 D intermittent dark exposure

I just got a used 400D and occasionally I get a dark exposure. I looked at the exposure data in Light Room and it is almost identical to the previous one. The histrogram show all of the visual information shifted to the left. When I tweak the image in Light Room the Photo looks normal and the Histrogram of course is changed.
Anyone have this issue with a 400D or heard of it before?

I'm not being funny, but you'll need to give a little more than that. What sort of conditions where you shooting in? What mode? What was you shooting? Any examples? Did you use flash? Where you shooting bursts?

All these things can affect the images your camera produces.

Are you using flash? If yes, then, it could be because the flash did not fire.

Please post two photos, one just before the dark photo, and the dark photo itself.

pieq314 wrote in post #3906590
Are you using flash? If yes, then, it could be because the flash did not fire.

If the settings were the same (i.e aperture, shutter speed and ISO didn't change between exposure) and then this is the only think I can think of that would produce a darker frame. As suggested, example photos with the EXIF data would be most helpful.

Mark

yup - photos please

Thanks Guys.. Photos would help !!!! I will post them tomorrow ... I thought there might be a known issue that I was not aware of.. No flash by the way... daylight and full auto. More with picts to follow !!!

Here is the first shot:
http://s187.photobucke​t.com …ew¤t=IsmM​G_0917.jpg
File size: 286795 bytes
File date: 2007:09:12 06:15:57
Camera make: Canon
Camera model: Canon EOS DIGITAL REBEL XTi
Date/Time: 2007:09:09 15:03:06
Resolution: 1024 x 683
Flash used: No
Focal length: 55.0mm (35mm equivalent: 89mm)
CCD width: 22.28mm
Exposure time: 0.0080 s (1/125)
Aperture: f/8.0
ISO equiv.: 400
Whitebalance: Auto
Metering Mode: matrix
Exposure: program (auto)

Here is the second one
http://s187.photobucke​t.com …ew¤t=smIM​G_0921.jpg
File size: 233992 bytes
File date: 2007:09:12 06:16:10
Camera make: Canon
Camera model: Canon EOS DIGITAL REBEL XTi
Date/Time: 2007:09:09 15:06:15
Resolution: 1024 x 683
Flash used: No
Focal length: 55.0mm (35mm equivalent: 89mm)
CCD width: 22.28mm
Exposure time: 0.0040 s (1/250)
Aperture: f/11.0
ISO equiv.: 400
Whitebalance: Auto
Metering Mode: matrix
Exposure: program (auto)

The

Looks like the glare off the water from slightly different angles just fooled the exposure. the first set exposure off a darker area in the scene and the second exposed off the glare on the water. Just my thoughts.

Well it clear from the EXIF why it’s darker, shutter speed from 1/125 to 1/250 and from f/8 to f/11. You got a whole lot less light on the sensor for ½ the time. As to why, I like Az2Africa’s answer, the reflection fooled the meter. These types of shots love polarizing filters to cut the glare.

I'd go with the metering too.

Look at all your shots where you think it's darker and see if there is a large area of white or light colour. Like the glare off the water in your example, or a patch of sky between tree coverage, etc.

My thanks to everyone for taking time to read my post and answer my question. I have been shooting for quite a while but this is my first trip into the DIGITAL SLR world. I guess I was looking for sensor failure not So I do appreciate everyones help. I guesss I should have looked at the exposure data closer. The second shot is two stops under. After a little Photoshop, it is amazing the detail that I was able to get back. I agree with Az2Africa. It was probably the reflection throwing off the meter. Its a new era but the old rules still apply..Many thanks !!!