[Photography-sig] Photography-sig Digest, Vol 18, Issue 7
Richard Guy Briggs
rgb at tricolour.net
Sun Oct 30 23:56:10 EDT 2011
On Sun, Oct 30, 2011 at 04:57:47PM -0400, Eric Brackenbury wrote:
> Well I wonder how Hugin would mange this with some modification to the
> current process for panorama switched to stacking.
Hugin is already called from qtpfsgui for stacking, and there are other
utils already using hugin for stacking for depth-of-field stacking, so
that already exists.
It is just the first stage of "processing" for each focal point that
> Any thoughts Jeongyun ?
> On Sun, Oct 30, 2011 at 12:00 PM, <photography-sig-request at oclug.on.ca> wrote:
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> > 1. Re: Lytro camera (Gary Jones)
> > ----------------------------------------------------------------------
> > Message: 1
> > Date: Sun, 30 Oct 2011 09:35:04 -0400
> > From: Gary Jones <garyjonesspao at gmail.com>
> > Subject: Re: [Photography-sig] Lytro camera
> > To: Richard Guy Briggs <rgb at tricolour.net>
> > Cc: photography-sig at oclug.on.ca
> > Message-ID:
> > <CABNnR=Ur_GK=Xs-Pf_-bNDiZ3G-YcM3RUsH1-OW=skef+ri6Ww at mail.gmail.com>
> > Content-Type: text/plain; charset="iso-8859-1"
> > If they can be refocused, stacked and resaved at greater depth of field,
> > then that would be quite beneficial. The problem, and then the question,
> > is, is it worth it to go through so much processing, for each picture, and
> > spending the money for a new camera (which won't be cheap) worth it for the
> > few pictures that might be out of focus. Granted, some situations are very
> > difficult to focus, so it might be worth while for that. Macro photography
> > is one of the first that comes to mind, of course, not so much because the
> > focus might be off, but just to get greater depth of field, provided that
> > this lens will work like that. It's depth of field will probably be limited
> > to some distance, too.
> > To see the effect now, we could always try stacking the demo pictures to
> > see how the depth of field carries. I think that we will have to save quite
> > a lot of images with different focal points, just to get a decent depth of
> > field. It may be more time and trouble than it is worth. I'm sure that
> > future software, or plugins, will make it easier to stack images, much like
> > astrophotography software does now.
> > Anyway, I think I will wait and see what comes out, and of what real use it
> > is before jumping on it.
> > Gary
> > On Fri, Oct 28, 2011 at 10:12 PM, Richard Guy Briggs <rgb at tricolour.net>wrote:
> >> On Fri, Oct 28, 2011 at 07:49:31PM -0400, Gary Jones wrote:
> >> > Hi everyone,
> >> >
> >> > I was thinking about the practical aspects of this camera and its
> >> > technology. Other than using it to demonstrate depth of field, I couldn't
> >> > really think of why I would want to give a viewer the option to throw the
> >> > main subject out of focus to focus instead on the background.
> >> For the photographer's benefit only, would be my instinct. However, it
> >> could be interesting for a subject such as a macro shot of an insect,
> >> for documentation or science teaching.
> >> > Correct me if I am wrong, but I would thing that this technology would be
> >> > for the photographer's benefit and use, and that the photographer
> >> > would/should save the result as a jpeg or whatever, WITHOUT the ability
> >> for
> >> > the viewer to change the focus point of the image. If the photographer
> >> went
> >> > to the trouble of composing and focusing properly, why would they want
> >> > everyone to have the capability to change the focus on what should be a
> >> > properly focused and composed image? Obvioiusly, if a print is made from
> >> the
> >> > image, the depth of field won't be able to change.
> >> Well, it ocurred to me that the photographer could then re-develop this
> >> capture at many focal points and stack them to get a much deeper depth
> >> of field. This could be valuable in situations where you won't have a
> >> chance to re-do the shot.
> >> > Also, is it set at f2 only, with no capability for greater depth of
> >> field?
> >> See above. ;-)
> >> > What if the photographer wants more than just selective focusing? The
> >> > technology is very interesting, but I'm wondering about the practical and
> >> > commercial aspects of it.
> >> That'll come with software processing, which so far seems to be
> >> proprietary. I'm sure there'll be a proprietary photoshop plugin before
> >> long...
> >> > Gary
> >> slainte mhath, RGB
> >> --
> >> Richard Guy Briggs -- ~\ -- ~\ <
> >> hpv.tricolour.net>
> >> <www.TriColour.net> -- \___ o \@ @ Ride yer
> >> bike!
> >> Ottawa, ON, CANADA -- Lo_>__M__\\/\%__\\/\%
> >> Vote! -- <greenparty.ca
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slainte mhath, RGB
Richard Guy Briggs -- ~\ -- ~\ <hpv.tricolour.net>
<www.TriColour.net> -- \___ o \@ @ Ride yer bike!
Ottawa, ON, CANADA -- Lo_>__M__\\/\%__\\/\%
Vote! -- <greenparty.ca>_____GTVS6#790__(*)__(*)________(*)(*)_________________
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