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Re: What's better for a 1.6x crop factor body, 8mm or 4.5mm?

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  • prague
    DON T BUY A 4.5MM if you do, you ll feel REALLY bad when you click view fullscreen and your pano isn t sharp enough. I ve heard this a few times already from
    Message 1 of 4 , Dec 1, 2009
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      DON'T BUY A 4.5MM

      if you do, you'll feel REALLY bad when you click "view fullscreen" and your pano isn't sharp enough. I've heard this a few times already from people who bought the 4.5mm.

      get an 8mm and don't look back. :-)


      --- In PanoToolsNG@yahoogroups.com, "Roger D. Williams" <roger@...> wrote:
      >
      > On Tue, 01 Dec 2009 14:05:46 +0900, dburton97128 <dburton97128@...>
      > wrote:
      >
      > >
      > >
      > > For full 360/180 panorama's on a 1.6x crop factor body (Canon 50D), what
      > > will work better, a 4.5mm or an 8mm lens?
      > >
      > > What are the trade offs between these two choices?
      >
      > The trade offs are pretty clear. The 4.5mm lens will give you a full
      > circular
      > image and allow you to make a spherical panorama in three shots or more
      > safely four. On the other hand it will "waste" quite a large area of
      > your image sensor, effectively reducing the pixel count of your final
      > panorama.
      >
      > The 8mm lens will require at least four shots, more safely six, and at
      > least
      > one additional shot, maybe two, for zenith and/or nadir. It will use a
      > larger
      > area of your image sensor, giving a higher pixel count for the final
      > panorama.
      >
      > You have to weigh the convenient of fewer shots to make and less stitching
      > to do against the loss of pixels. However, if you are shooting for the
      > web, the difference may not be
      >
      > There will also be differences between the lenses dependent upon the
      > choices
      > you are considering, but the above considerations will apply whatever the
      > lenses.
      >
      > Roger W.
      >
      > By "safely" I mean with a larger margin for error.
      >
      > --
      > Business: www.adex-japan.com
      > Pleasure: www.usefilm.com/member/roger
      >
    • dburton97128
      Thanks, this is what I was looking for. David B
      Message 2 of 4 , Dec 1, 2009
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        Thanks, this is what I was looking for.

        David B
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