That's more clear, Jim.
I use single frame advance more than sequence (when I have the MD on at
all) and for what you describe that sounds like the best method. Another
solution in that situation would be to either use a shorter lens (250mm,
say) or position yourself farther from the action with that 300mm so as to
increase your frame width relative to the subject's forward motion, giving
you more leeway with re to anticipating the action and shutter lag.
As for MD performance: Olympus specs read that the maximum advance rate on
the MD2 is 5fps @ 1/500, and I've interpreted that to mean that the advance
rate will be less (how much less I don't know) at a slower shutter speed
(how much slower I don't know).
Where have you read the 1/125 suggestion re fps?
Tris
At 06:53 PM 3/13/2004 -0800, you wrote:
>on 3/13/04 9:04 AM, Tris Schuler at tristanjohn@xxxxxxxxxxxxxx wrote:
>
> >
> > Not sure if I understand your problem correctly re the motorcycles and
> > panning with the shot around a curve, Jim. The implication of the
> > specifications for the MD2 is that fps increases with shutter speed, up to
> > 5 fps at 1/500, so even if your fps was down to around 3 fps I'd guess your
> > actual shutter speed would need to be 1/250 or greater, which would seem
> > adequate for handheld panning of the action at that scene. If you were
> > working off a tripod with the lens aimed at a certain point on the track
> > then I could see a few missed frames, but assuming a film consumption rate
> > of 4 or 5 fps and further assuming the drive was in operation before the
> > bikes entered the focus zone I'd expect a fairly high capture rate of
> > useable images. If there wasn't enough light to use a faster shutter speed
> > then there's no telling what your fps might have been, though I'd guess 2
> > fps, anyway.
> >
> > I wouldn't dream of shooting that sort of action on a tripod but choose my
> > film according to the light available and work out of hand--even in
> > relatively poorly lit arenas Fujipress 1600 @ f/4 or f/5 the shooter ought
> > to achieve a manageable shutter speed for panning with the action, which
> > itself ought to guarantee that the vast majority of frames be "useable" (in
> > the sense that the bikes were captured completely in frame--there might be
> > other reasons why one frame or another were not a keeper) even had the fps
> > dropped down to 2 fps (which is about the speed, actually a bit faster, I
> > had to work with using my original Winder on an OM-1 MD).
> >
> > Have I misunderstood your description of this action?
>
>If I understand the limitations of the MD1 and MD2, above 1/125 second the
>shutter speed doesn't limit the frames-per-second. But what happened to me
>was I couldn't synchronize my panning motion to the angular sweep of the
>rider, so while the first frame would be aligned within the limit of the
>shutter release lag, after that the subsequent exposures were somewhat
>displaced from the motion of the rider through the frame, resulting in the
>rider either 'riding out' of the frame or me 'panning ahead' of the rider.
>With a 300/4.5 lens from the edge of the fence, the frame is tight enouogh
>that its easy to overshoot or underfollow the rider as you pan around.
>
>I did that the first year I had the MD2, then went back the next year and
>used single frame, and was able to recenter for the second and third (and
>sometimes a fourth) as the rider swept around the curve. My actual images
>might have been 3-4 in a period of about 2 seconds, but they weren't
>continuously driven by the MD, each was shot separately. Since the MD in
>theory would be ready in about 60 milliseconds, I had time to recenter the
>finder image and press the button again. I never could have done that with
>manual advance, and probably not with a Winder.
>--
>
>Jim Brokaw
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