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To whom it may concern.
We recently bought the new Canon 5D mkII specifically for the advertised video functionality and to replace our Canon HV20 and HV30 camcorders. We were sufficiently impressed with samples we had seen and the features outlined in your 'Canon 5DmkII WHITE PAPER' to decide on the camera.
But I must say I was somewhat disappointed to find that the video mode has been entirely automated with only an auto-exposure lock and an exposure compensation dial to brighten or darken the image. What this dial controls (aperture / ISO / shutter speed) is not under the user's control and varies depending on what the camera selects.
Simply put, the user has no control over what aperture is chosen when in video mode, the camera meters the scene and makes a selection for you - removing creative choice and - crucially - removing control over your depth-of-field.
This seems to negate the claims made by Canon.
Please take a look at this extract from the Canon 5D mkII WHITE PAPER: (page 6)
>>". . . photographers and videographers can capture high definition video with **depth-of-field control found only in professional video models**√É¬Ę√Ę‚Äö¬¨√Ę‚ā¨¬Ěusing much more affordable Canon EF lenses including fisheye, ultra-wide, and image stabilized lenses."<<
It clearly makes the claim that not only does the camera offer control over the depth-of-field, but such that it can be compared with the kind of control normally exclusive to 'professional video models'.
The thing is - that without control over aperture, there is no control over the depth of field, not just that the control is less than 'professional', but that there is none whatsoever.
The WHITE PAPER concludes (on the final page) with the same claim:
>>"Alternatively, professional videographers will be drawn to the EOS 5D Mark II√É¬Ę√Ę‚Äö¬¨√Ę‚Äě¬Ęs unique depth of field control"<<
This once again unambiguously makes the claim that there is control over the depth-of-field, indeed - to a level that would be of interest to 'professional videographers' rather than the actual reality of the situation which is: no control at all over depth-of-field.
For the moment we have followed the lead of many technical savvy videographers we have spoken to online, and are planning to buy Nikon lenses (with a Nikon to EOS adaptor) as these lenses have a manual aperture ring and allow full control over depth of field.
This a less than ideal solution as features such as auto-focus, Image stabilization and metering are lost, but at the end of the day it is the depth of field that a large sensor and 35mm lenses offer that is this camera's real draw and less so these other features (something your marketing people are aware of, if not entirely accurate in their promotion).
So . . . .
This leads me to a question:
Is there a firmware update planned that will address this limitation ?
Thanks for taking the time to read this rather long letter.
All the best
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