Canon MiniTT1 Owner's Manual

32TroubleshootingWhy is my photo not properly exposed?Consult the owner’s manuals for your flash and camera to understand how exposure decisions are made.While the ControlTL system can greatly expand the operating range of Canon’s E-TTL II system, and over-come inherent problems with an optical communication system, it does nothing with exposure decisionsmade by the camera. Make certain your shooting situation allows enough direct or reflected pre-flash tobe visible to the camera.If you have more than one remote E-TTL II flash (either in basic E-TTL II mode or on one Canon group/zonewhen using ratios) then it is one “piece of light.” If the camera can measure the output from one flash, butdoes not see the other, it will make a calculation based on the light it sees. Both flashes will get sent thesame value from the camera and both flashes will trigger at that same value. This may not yield the resultsyou want. You may need to reposition the flashes to ensure the camera yields a proper exposure.Why didn’t my remote flash trigger in the exposure?Watch the remote flash as you trigger. If you see the small pre-flash happen, but not a 2nd flash, thenthe camera decided not to use that flash in the exposure. The camera did not see enough of the pre-flashto make a flash exposure calculation. The radios and flash are working properly. Reposition the flash orsubject so that the reflected light will be more visible to the camera, or add another flash to provide morepre-flash light for the camera to measure. If you are using a light modifier on the remote flash, try adjust-ing it to allow more light or consider removing it. Other questions to consider in your shooting scenario:• Is the ambient light brighter than the pre-flash from the camera’s perspective?• Is the pre-flash to subject distance too great or at too great an angle relative to the camera?• Is the subject too small (not enough reflected pre-flash reaching the camera) for the metering modeselected in the camera?