A-DEP appears to be on all the APS-C bodies but DEP mode is among the
missing on a 5D.
Chuck Norcutt
Marc Lawrence wrote:
> 2009/4/8 Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>:
>> An interesting hack. Some canon SLR lenses do feedback focusing
>> distance to the camera but it's only used for flash exposure
>> calculation. The hyperfocal distance display is a cool idea and
>> overcomes the lens marking problem for zooms. No reason why a firmware
>> hack on the DSLR's couldn't do the same.
>
> Some Canon (D)SLR cameras used to/still do(?) have either a DEP mode
> or an A-DEP mode. The A-DEP mode (on my 10D) looked at the reading
> from the focus points available, picked the one with the closest item
> in the scene under it, the one with the farthest item in the scene
> under it (which could also be "infinity") and then selected an
> aperture and focus distance that captured those two in focus.
>
> The DEP mode. from memory, was a three-step process (I had it on my
> 50E/Elan IIE). You first pressed the shutter-release to focus on your
> near-subject, then again for your far subject, and then a third time
> to take the photo (when it would do as above - select focus distance
> and aperture to capture those two points in focus). If I remember
> rightly, it tried to just capture those two focal points in focus, so
> that if you selected two points not too far (back to front) apart, it
> would open the aperture as far as it could (to actually minimise DoF
> to those two points, and blur the rest as far as it could.
>
> I think the latter option is on the 5D, but is not on the 5D MkII.
>
> Cheers,
> Marc
> Noosa Heads, Oz
> http://www.parknmeter.com/gallery
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