Having problems with your Canon EOS 400D / Rebel XTi Digital Camera with 18-55mm Lens ?

My EOS 400D flash sometimes pops up in bright daylight in full auto mode. I sent it back to Cannon who returned it saying no fault found. I then began to think that the problem was the way I held the camera and that I may be obscuring the (light?) sensor near the grip with my hand. After not using the camera for a while I am now taking shots again and the flash pop up problem has re-appeared. I am now sure I am not blocking the sensor. Any ideas?


Answers :

In full auto mode, the camera tries to use fill flash, when it detects a backlit scene (e.g. a person in front of a window). So this is not a bug, it's a feature!
If you don't want the flash to fire, you can push it down and still take the shot. If you want to take control yourself, use one of the creative modes (e.g. P or Av).

This has nothing to do with obstructing a sensor, as the camera meters through the lens (only). What you are referring to, most likely is the red eye reduction light / self timer indicator.
Repair Help & Product Troubleshooting for Canon EOS 400D / Rebel XTi Digital Camera with 18-55mm Lens

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My EOS 400D flash sometimes pops up in bright daylight in full auto mode. I sent it back to Cannon who returned it saying no fault found. I then began to think that the problem was the way I held the camera and that I may be obscuring the (light?) sensor near the grip with my hand. After not using the camera for a while I am now taking shots again and the flash pop up problem has re-appeared. I am now sure I am not blocking the sensor. Any ideas?


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