Voor meer info, zie de [url=http://www.usa.canon.com/uploadedimages/FCK/Image/2010/QuickGuides/CDLC_EOSHDSLR_Recording_QuickGuide.pdf]QuickGuide to EOS DSLR Video Recording[/url].
[b]Automatic Exposure with Auto-ISO[/b]
All EOS DSLRs with movie mode allow automatic exposure with AE Lock and AE Compensation. The EOS 5D Mark II with firmware version 2.0.4 also provides Av/Tv functionality. Keep in mind, however, that normal variations in scene and subject brightness can cause undesirable exposure fluctuations during recording. Many pros prefer full Manual Exposure because exposure will stay consistent, even when the camera moves or the light changes.
[b]Manual Exposure with Auto-ISO[/b]
This option provides a fixed shutter speed and aperture while allowing the ISO to move up or down in response to changing light levels. Keep in mind, however, that similar to automatic exposure with auto-ISO, you lose control over how the camera responds to changes in subject brightness. Also note that higher ISOs lead to higher signal noise.
[b]Manual Exposure with Fixed ISO[/b]
In this mode the exposure is "locked in." This is ideal for when light levels are consistent, less so when they are not. Manual exposure gives you the added benefit of being able to used a fixed shutter speed, which should be approximately twice the frame rate. For example, if your frame rate is 30 fps, an ideal shutter speed would be 1/60 second. You can then set your aperture accordingly. If this requires an aperture smaller than what is available on your lens or if you prefer to use a larger aperture for a more shallow depth-of-field, place a neutral density (ND) filter over the lens. Depending on how dark a filter you choose you can reduce incoming light by up to four stops.[/quote]