Thank you very much for taking the time to write this. Took 6 shots yesterday,
and can see where subject depth and background bokeh will take some
experimentation. 23 &1 work pretty good! I knew 4/3 lenses would not stack,
but not that they won't bracket either. Bummer........so I ordered another
lens and camera. Thanks again.
>
> On April 22, 2017 at 7:07 PM Moose <olymoose@xxxxxxxxx> wrote:
>
> On 4/22/2017 8:44 AM, Don Holbrook wrote:
>
> > >
> > Beautiful photos!
> >
> > >
> Thanks!
>
> > >
> > Re the discussions on focus bracketing......any advice on choosing
> > # of shots and spacing vs subject?
> >
> > >
> Yup. The camera is doing some thinking for you, so it may be necessary to
> out think it on occasion. I believe the
> following to be correct. In any case, acting on them works:
>
> The camera uses focal length, aperture and it's own DoF table to
> determine the distance between focal planes of
> exposures. You can further adjust this, without any certain precision,
> with "Set Focus Differential".
>
> My experience (and that of Ctein) is that any setting higher than one
> invites waves of varying softness with distance
> that I really don't like. I suppose such a setting might be fine for web
> size or small prints.
>
> With Focus Differential set to one, the depth of the stack - the area
> that will be in focus in the stacked/merged image
>
> * will vary with f-stop; smaller aperture = greater DoF = more
> spacing between slices = "deeper" stack. F5.6 is the best
> IQ stop for most of the lenses.
>
> My experience is with the E-M5 II, so part of my 'advice' is based on it.
> Its buffer will allow about 12-13 shots in a
> second or so at higher shutter speeds. Go beyond that, and time between
> exposures becomes dramatically longer, because
> the buffer is full. I have a mixed bag of cards. I see that one body has
> a UHS 1 and the other a UHS 3 card, so this
> performance is probably somewhat different between them, but I've not
> measured it. (The E-M1 and 5 II bodies don't
> support the increased speed of UHS 3; I'm assuming the '3' cards perform
> in them at '2' rates.)
>
> Reviews of the E-M1 II comment on the huge buffer, so it would seem any
> setting up to 100+ slices would be speedy on it.
>
> On my E-M5 IIs, I have MySets on Fn1 and Fn2, one for 12 slices, the
> other for 23*. 12 is always quick in decent light
> (12 1/20 sec. exposures take longer than 12 1/1000 exposures.) I usually
> go for f8-f10, for a deeper stack. The vast
> majority of my stacks are shot hand held, and probably a majority of
> those in conditions where the subjects may move, in
> addition to my movements, so exposures after the buffer fills can be
> problematic. When on a tripod, none of this much
> matters; set a deep stack and wait a few seconds longer.
>
> 23 catches the full depth of more things. But the deepest flower on
> Columbine in Blue II is softer than it could have
> been, with a deeper stack. Columbine in Blue IV didn't even need a full
> 12.
>
> Other than the buffer problem, 'over' shooting is not a problem. Look at
> them in a browser and throw away any that go
> beyond the deepest needed for the subject. I have had some problems with
> catching the closest bit in focus. I now use
> for tripod shots, and focus slightly past-closer than even magnified MF
> shows. Hand held, I half-press, then move/lean
> back slightly.
>
> The alignment process in PS deals quite well with the camera movement
> between frames that my hand holding introduces. As
> with any focus stacking, movement of parts of the subject can cause
> ghosting, often fairly easy to fix by hand, but time
> consuming.
>
> Movement between subject and background make it fail. In a stack of a
> poppy moving in a breeze, PS chose to use the soil
> background as the subject to align, so the flower was all over the place.
> Sure, I was pushing the limits, how else am I
> gonna learn what I can get away with.
>
> This may be more than I really know. ;-) I hope it helps. Actually,
> thanks for asking; I think writing it all down has
> clarified my own thinking.
>
> In Deep Moose
>
> * No, I don't know why 23, instead of 24 or even 25, it's just what I
> did. :-) I do know that I found 17-18 too often
> insufficient.
>
> >
>
> > >
> > > > >
> > > On April 21, 2017 at 4:42 AM Moose <olymoose@xxxxxxxxx> wrote:
> > >
> > > In the process of beating back the rose that was falling over
> > > everything, on stem of the Columbine I posted an image of
> > > a few days ago was broken off. So, it came inside - And -
> > > it's the time of year when late afternoon sun blasts straight
> > > in where we put flowers.
> > >
> > > The whole thing, from bud to gone by.
> > > <http://zone-10.com/tope2/main.php?g2_itemId=21825>
> > >
> > > Full flower.
> > > <http://zone-10.com/tope2/main.php?g2_itemId=21829>
> > >
> > > Bye-Bye <http://zone-10.com/tope2/main.php?g2_itemId=21827>
> > >
> > > All with PLeica 12-60 and Nikon 5T
> > >
> > > Golden Light Moose
> > >
> > > --
> > >
> > > What if the Hokey Pokey *IS* what it's all about?
> > > --
> > >
> > >
> > > _________________________________________________________________
> > > Options:
> > > http://lists.thomasclausen.net/mailman/listinfo/olympus
> > > Archives:
> > > http://lists.thomasclausen.net/mailman/private/olympus/
> > > Themed Olympus Photo Exhibition: http://www.tope.nl/
> > >
> > > > >
> > >
> --
>
> What if the Hokey Pokey *IS* what it's all about?
> --
>
> _________________________________________________________________
> Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
> Archives: http://lists.thomasclausen.net/mailman/private/olympus/
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>
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