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Re: Fisheyes vs Lensflare...

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  • enridp
    Thanks Peter, I was thinking in making a larger hood, but I m afraid about the stitching process, because I want to use batch processing. I m taking 6 pictures
    Message 1 of 7 , Jan 24, 2011
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      Thanks Peter, I was thinking in making a larger hood, but I'm afraid about the stitching process, because I want to use batch processing.
      I'm taking 6 pictures now, that's a lot of overlap and I don't have stitching problems, let's see what happens with a bigger hood...


      --- In PanoToolsNG@yahoogroups.com, "panovrx" <panovrx@...> wrote:
      >
      > Most fisheyes dont have much in the way of a lens hood, generally just enough to protect the front element from impacts. I sometimes make lens hoods from black high density foam which I cut out a hole in with a hole saw and press it onto the lens. Then I stick two vertical pieces of foam on the front to cut down the horizontal coverage to about 60 or 90 degrees (and have the vertical coverage unobstructed -- ie. 180 degrees+). This means you have to make more shots but you are using the central zone of the lens mostly so the pictures are sharper and they are often much less flared in city photography.
      >
      > PeterM
      >
      >
      >
      > --- In PanoToolsNG@yahoogroups.com, "enridp" <enridp@> wrote:
      > >
      > > "You can't hide the sun with a finger"... :)
      > > (it's a common phrase in spanish)
      > > Hide the sun it's a good idea, more if we have the high tech "magic wand" like Felipe.
      > > But I want to take walking panoramas here in my town (like a poor version of Street View), and I was thinking in using the Batch Processing from PTGui...
      > > But it's a good solution for other applications.
      > >
      > > I shot a lot of pictures at 1pm and 3pm, and I can see that high f produces small flares but *very* intense. At 3pm there are less flares than 1pm.
      > > And about position of the sun in the image... I don't know... It's very confusing, look at these images:
      > >
      > > 13hs - f22
      > > http://www.imagengratis.org/images/samyangflares.jpg
      > > 13hs - f8
      > > http://www.imagengratis.org/images/samyangflxk8dx.jpg
      > > 15hs - f8
      > > http://www.imagengratis.org/images/samyangflko2pk.jpg
      > >
      > >
      > >
      > > --- In PanoToolsNG@yahoogroups.com, Erik Krause <erik.krause@> wrote:
      > > >
      > > > Am 23.01.2011 18:11, schrieb enridp:
      > > > > I think it's impossible to avoid that, but maybe there are tricks to
      > > > > reduce them.
      > > >
      > > > You can avoid it completely if you shoot the image with the sun in it
      > > > twice: one normal and one with the sun obscured (f.e. with your hand).
      > > > Later you mask the everything but the sun in one image and the hand
      > > > in the other one. Of course it is best your arm obscures sky only...
      > > > (I always wanted to fix some round shade on a telescopic antenna in
      > > > order to do so...)
      > > >
      > > > > For example: 1) what is better to reduce flares? f3.5 or f22?
      > > >
      > > > Higher f-stops will give you a more star-like image of the sun and
      > > > smaller aperture reflections (those colored spots). But don't go past
      > > > f/16 since diffraction might blur your images.
      > > >
      > > > > 2) what is the best position relative to the sun? pointing directly
      > > > > to the sun? (the sun in the center of the image or the sun in the
      > > > > border?)
      > > >
      > > > At the border. It is easier to obscure then, and you have the chance to
      > > > come from the opposite side in the other frame.
      > > >
      > > > > 3) what is the best hour? 12pm with the sun high in the sky or near
      > > > > the afternoon?
      > > >
      > > > This depends on your artistic preferences. Afternoon or evening is
      > > > usually nicer: http://tinyurl.com/6c5nfjx
      > > >
      > > > --
      > > > Erik Krause
      > > > http://www.erik-krause.de
      > > >
      > >
      >
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