Question about Canon EOS 400D / Rebel XTi Digital Camera
Hi there! I just bought a Canon 400D and tried to use a zoom lense from my old Canon SLR, but can't take any photos - 'error code 99, turn camera off and on again' - that doesn't work, though. Camera works perfectly with 28-55 lens that came with it. Why does the old lens not work? Thanks for any help.
Your camera performs a quick 'integrity' check before each shot and goes into error 99 mode if the lens in incompatible or has a diaphragm problem. ( it will also display e99 if the shutter or flash unit is not ok but this does not apply here ). This is how you can check whether the diaphragm mechanism is ok : attach lens to your old camera and set camera to AV and set F stop to 16 . open back and release shutter and look through the back to see if your lens is closing to F 16. If it is closing fine then the lens is ok but is not compatible with your D400.
Posted on Sep 10, 2007
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