Discussion in '35mm Cameras' started by Dudley Hanks, Jan 7, 2009.

  1. Dudley Hanks

    Mark Thomas Guest

    My PTGui result was, unsurprisingly, just like that...!

    I did the same stitch using the defaults with AutoStitch, Hugin
    (+autopano.exe) and Ptgui. I set them all to create a final image of
    the same size (3600 pixels wide), 90% jpg quality, everything else at
    default settings. I'll post them all if anyone wants to see, but for
    the moment I'd just make the following observations:

    - did a nice job, with only a few minor stitching errors/misalignments
    at the edges - eg the two lit windows in the middle house had misaligned
    areas, one of which would have been included in the cropped result. I
    could *not* spot any other significant misalignments in the main image.
    The result was quite soft, and did not have the fine detail of the
    other two.

    - also did well, *but* there were two visible curved stitch lines in the
    result, under the two central lit windows. Along these lines the images
    were displaced by up to ~8 pixels, and the exposure did not quite match,
    so they were pretty obvious to a fussy type like me. The image was
    significantly sharper than the Autostitch result, but was also a bit noisy.

    - the best result out of box. I could find no visible clues to the
    stitches, except for the tiniest hint of exposure differences along the
    extreme edges in overlap areas that would have to be cropped anyway.
    The image was similar to the Hugin image for sharpness, but it did not
    suffer from Hugin's slightly grainy/edgy appearance - perhaps the
    default interpolator choice is different, I didn't check.

    The results were not that surprising, after all you have to pay for
    PTGUI... Given PTGUI and Hugin use the same engine, I'm sure the issues
    in Hugin could be fixed with ease. But I think Dudley would like a good
    one-click result, so I'd stick with Autostitch. Can't beat the price!

    My reservations about Autostitch are:
    - almost no control over how it stitches - happily it almost always gets
    it right, but when it doesn't there's not much you can do.
    - gets very slow on larger images, f'rinstance I'm now trying a 100%
    size stitch on Dudley's images - over 20 minutes now ("Block 24 of
    60"...) & my machine is crawling along and disk-thrashing. When
    Autostitch crashes on my system* it does so inelegantly after a very
    long time.
    - as per above, the results are a little soft.

    *OK, my system is aging, only 1Gb/2.8Ghz, but other pano software
    doesn't crash.. And yes, I *have* tried all the suggested fixes on the
    'net for this problem.
    Mark Thomas, Jan 8, 2009
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  2. Dudley Hanks

    Pete D Guest

    I have a 2.3 metre wide pano print above my desk at work that I made from 6
    photos taken with a 50mm lens and processed with autostitch, if you do the
    right thing taking the shots and get good overlap the result can be

    This one from 13 shots.

    And this one from 6 or 7 shots.
    Pete D, Jan 8, 2009
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  3. Dudley Hanks

    Pete D Guest

    And this one horizontally with a 31mm lens.
    Pete D, Jan 8, 2009
  4. Dudley Hanks

    Pete D Guest

    I ran them through autostitch at 40% and took a few minutes to be able to
    look at the result, not too bad but the window as noted above was
    misaligned. Then ran it through CS3 at 100% and the result was superb. This
    is it saved at 20% with a little noise reduction and sharpening.
    Pete D, Jan 8, 2009
  5. Dudley Hanks

    Pete D Guest

    I just noticed a small pludge just next to the car on the right, hard to see
    though in the tyre tracks. I can also see why number one son decided not to
    go back and work in Edmonton this winter.
    Pete D, Jan 8, 2009
  6. Dudley Hanks

    ^Tems^ Guest

    Could have fired off some hate mail to Doggy in that time :)

    not too bad but the window as noted above was
    ^Tems^, Jan 8, 2009
  7. Dudley Hanks

    Dudley Hanks Guest

    Thanks for all the tests, guys, I'll probably stick with the AutoStitch prog
    until I decide whether or not to lay out some bucks...

    Take Care,
    Dudley Hanks, Jan 8, 2009
  8. Dudley Hanks

    Dudley Hanks Guest

    Aw, Pete, it was a glorious night when I shot those pics. Temp around -30C,
    no wind to speak of, almost got the last pic shot before the fingers started
    turning green ... :)

    Take Care,
    Dudley Hanks, Jan 8, 2009
  9. Dudley Hanks

    Dudley Hanks Guest

    Thanks, Mark, I can't believe how much time and effort you put into testing
    those progs...

    But, I now know which way to go when it comes to software. Thanks again for
    all your help.

    BTW, what did you think of the noise level in the original shots? I shot at
    0.8 seconds with the lens just about wide open, at 400 ISO, and I'm
    wondering if a similar shot were taken for printing with minimal cropping
    whether I'd need to run some noise reduction on it...

    Take Care,
    Dudley Hanks, Jan 8, 2009
  10. Dudley Hanks

    Mark Thomas Guest

    It was for me too, I always like to know what tool is best for the job..
    I'd say no.. There was a bit of very fine noise in the darker areas of
    those shots, but unless you were printing very large I don't think it
    would have been visible at all. Dslrs really are that much better!
    Mark Thomas, Jan 8, 2009
  11. Dudley Hanks

    Dudley Hanks Guest

    Yes, my wife did that one. She just cropped to rectangular and saved it.

    That's interesting to know that Elements does a comparable job to CS, at
    least with the basic pano...

    Thanks, Alan, I appreciate that info.

    Take Care,
    Dudley Hanks, Jan 8, 2009
  12. Dudley Hanks

    Dudley Hanks Guest

    I couldn't take my A720 off of 100 ISO, even in daylight. Anything higher
    and the noise started to show up. It wasn't always a major problem, but it
    was there...

    Take Care,
    Dudley Hanks, Jan 8, 2009
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