Bruce Foreman |
October 4th, 2009 07:29 PM |
Gerald,
If you are not using a zoom lens or using autofocus (lens set to MF position), you should be able to "lock" exposure with the ISO button. If you are using the "unlock lens mount" workaround (see video linked below) for manual aperture control, ISO and shutter should remain as you have "locked" exposure with the ISO button as long as you remain in video mode and the camera is not powered down.
This exposure "lock" can be changed by pointing the camera where you intend to "film" next and pressing the ISO button again. Each time you press the ISO button, exposure is "locked" on what you have the lens pointed at. You can also adjust exposure up or down 2 stops either way by holding the AV button down while turning the adjustment "wheel"
In the "unlock lens" workaround in this video one step has been left out. If you want to set an aperture smaller than maximum depress and hold the DOF prevue while you depress the lens lock button and twist the lens a bit. Without holding the DOF prevue in, the lens will remain at max aperture regardless of what you have "dialed in".
Video: Shallow DOF on T1i with Canon EF/EF-S lenses on Vimeo
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