First time panorama shots and a problem

Manfr3dManfr3d Registered Users Posts: 2,008 Major grins
edited January 9, 2007 in Technique
Hi there panorama guys!

I'm just starting out with panorama photography. And was hoping
you can help me with this. My setup consists from bottom to top of:
tripod, ballhead (clamp bubble leveld), 360° panoramabase with clamp,
nodal slide with clamp, L-bracket with camera in vertical orientation.
I'm using a 28mm lens on an 1.6x crop body. The image below consists
of 12 shots all taken with the same exposure and fstop (f8) in manual
mode. also white balance was fixed. As you can see there is some
blending errors with the first few frames to the left. How can sth like
this happen? I turned all bells and extras in the panoramasoftware I use
off and only had it stitch the unedited images. I think that rules out the
software as a source of the error?!

main.php?g2_view=core.DownloadItem&g2_itemId=14356&g2_serialNumber=2
The image covers almost 180°

Sometimes the problem exists, and sometimes not. Maybe it's because
of the angle towards the sun? If so how can I still get blendable frames?

Here is another (less obvious) example (~10 frames):

main.php?g2_view=core.DownloadItem&g2_itemId=14368&g2_serialNumber=2


Thank you very much!
“To consult the rules of composition before making a picture is a little like consulting the law of gravitation before going for a walk.”
― Edward Weston

Comments

  • JWilbur26JWilbur26 Registered Users Posts: 90 Big grins
    edited January 8, 2007
    I am definitely interested in a solution to this. I tend to run into the same problem whenever I have the slightest angle to the sun. The only way I have cut back on it is by reducing the number of frames that I blend. Any Pano's I have done only consist of 5-6 frames anyway.

    I've also noticed it works better if I use the exposure lock on the D50

    www.sunshinestatephotography.com

    "There are 3 kinds of people in this world...those who can count, and those who can't" :scratch
    ~Anonymous


    Please feel free to edit my images...I can only learn from it.
  • dbddbd Registered Users Posts: 216 Major grins
    edited January 8, 2007
    Two questions
    Two questions:
    1) Are there any auto functions still enabled on your camera:
    focus,
    exposure (highlight exposure selection is particularly bad),
    white balance

    2) If you are using a raw converor, does it have any data adaptive features?

    Turn them off if you can.

    Also, the stongest banding appears to occur with the strongest highlight and greatest dynamic range.

    Keep on stitching!

    Dale B. Dalrymple
    http://dbdimages.com
    "Give me a lens long enough and a place to stand and I can image the earth."
    ...with apology to Archimedies
  • Manfr3dManfr3d Registered Users Posts: 2,008 Major grins
    edited January 9, 2007
    Hi Dale!

    I set my camera to manual (exposure and focus) and custom
    white balance. On the PC I converted them with RawShooter
    to jpegs where I again checked that all images had same
    shutter, fstop and color temperature.Covnersion was done
    without any manual or automatic software editing.

    You are right about where the banding occurs, the bands
    itself seem to be the edges of the individual frames. So
    I suspect that it comes from some form of vignetting
    as the lens gets hit by direct sunlight. I'm going to make
    a few tests with different lens hoods on the weekend
    to see if that's the error. I'll keep you posted.
    “To consult the rules of composition before making a picture is a little like consulting the law of gravitation before going for a walk.”
    ― Edward Weston
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