jeff kay wrote:
Have anyone here heard of of Hyperfocus?
Set focal length 6.3mm
Set aperture piority to f5.6
Set subject distance manually to 5ft.
The DOP will be from 2.4ft (near distance) of your subject to
infinity.
Save it to custom setting and snap away without anymore adjustment.
Shutter lag is at minimum (metering only as focus is taken care of)
Try this before returning your C750!!
I didn't know it was called as such. This was how I got sharp
photos with a 28-85mm. I relied on the DOF to save me on the
incacurrate focus. And indeed in most instances, my problem was not
focus, but blurr from the movement of my subject (runners) due to
slow shutter speeds in less ideal light. But in good light, I got
away with it. But this was not with an Oly camera but a Kodak. But
in principle this should work equally with any other camera.
But 6.3mm is only 38mm equiv to 35mm. I have already done quite
well with 85mm at 3.5 or whereabouts. Can one make adjustments and
go say 150mm or 200mm equivalent focus 20-30ft out manually to get
a deeper DOF? Theoretically it should. Maybe not a sharp focus from
30 ft to infinity, but I would definitely hit the subject sharp
from 30ft to maybe 40ft. And if my aperture is around 5.6, I might
even get it further out.
Most events are at around 30-40ft, 50 ft at the most. And if one
can keep onces equiv focal length at 4-5.6, then I presume, it's
smarter to manually focus then. A DOF of at least 10ft to the back
of a focus point is enough to get our subject in focus for many a
shots except for those where movement is very, very fast, or
towards the camera. The shutter trip lag, at least in the c-740
I've used is very quick to capture the image I am sure.
I am a bit busy now and it is raining here in the afternoons for me
to test it with a c-750. Has anybody the time to try this out? A
good distance would be 40 feet manual focus at 250mm, and we change
the aperture from the lowest to around 6.3 and see how deep the
focus range is.
If such modfications/workaround are possible, then soccer,
baseball, basketball, track, volleyball games and some activities,
can be photographed in confidence if we know our DOF range. One can
set on manual a prefocus on estimated distance (the farther the
better for greater DOF) to get more or less sharp pictures and
increase the chance of capturing the moment. Of course the higher
the aperture will give one more DOF giving one more lattitude.
IF this works out, then we have found a way to work around with a
problem instead of merely complaining about it. Anybody has the
time to check this out?
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