Black pictures I used my Rebel XTI last night, no problem. Downloaded the pictures, no problem. Went to shoot outside this evening....black on the LCD screen, but I could backspace and see the pics I took last night that I had not deleted. The picture counter came up fine on the black photos. Have you havd any luck with finding what what wrong>

Check your settings - could be if very black night, and you set it to 100 iso film speed, and maybe you are on say 1/1000 of sec at maybe f16, then that's ok. You would maybe need an explosion in an oil refinery to capture much.

However, you perhaps could try this:

1 change the battery for fresh one, and see if it helps - sometimes, the shutter won't really shut if battery power is very low

2. change the mode setting to auto, and see if the flash pops up and takes a pix - then if the pix is good, the camera is still working

3. Reset the camera to the factory defaults, by:

• Firstly press the 'menu' button, then the up button above the 'OK' as many times as needed, until you see the top folders are highlighted.
  
  
• Press the right button near the 'OK' until you see the last folder highlighted. You will know this is highlighted when you see the first menu option that says 'Language'. The 3rd one down from that says 'Clear Settings'.
  
  
• Press the down button under the 'OK' until 'Clear Settings' is highlighted, then press the 'OK' button.
  
  
• Scroll up to your choice and press 'OK' to reset your Canon 400D back to default factory settings.

I had the same problem with my Canon Xti, ( The screen was just black ) I read a post on this site about checking the mirror as a fix and there it was. My camera now works perfectley fine again...............I wanna say thanks to whoever posted that remedy