Julian Loke <[EMAIL PROTECTED]> writes:
> > Logan Reinwood <[EMAIL PROTECTED]> wrote: ...
> > to use the Hypeerfocal just trust the DOF scale that is on
> > your lens. If your lens has such a scale, than you do not
> > need an hyperfocal calculator! ...
>
> Hi Logan,
>
> Ahhh, there's the rub. Canon Zoom lenses may have a distance
> scale, but the EF 28-135 IS USM does not have depth of field
> scale (but the EF 24mm f/2.8 does).
>
> Although it might be possible to simulate DOF with the DEP
> function, I found it easier to remember:
> "28mm f/16 2m" and
> "24mm f/16 1.4m"
Strange, I always use DEP mode when I want to ensure that I've
got a particular range of the scene in focus (or as close as I
can get within the limits of a particular lens).
For a manual focus lens, I focus on one extreme point and "mark"
that distance position on the lens by holding one finger there,
then I focus on the other extreme point and mark that position,
then I straddle those two points around the focus line and read
off the f-number and add a stop. Then I meter the scene to find
what shutter speed goes with that f-stop, frame and shoot.
For EOS, DEP mode does all of that (except adding a stop) up
to the point of metering the scene. (It meters, too, but I don't
care what the camera tells me, I'll meter myself.)
This is all on a tripod, of course.
For handheld, this is too cumbersome for me, so if I am looking for
maximum depth-of-field, I use Tv mode with a minimum "safe" shutter
speed (e.g., 1/125 for 50mm). Not precise, but if I wanted precise
I'd be using a tripod.
*
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