Home Forums 360° Virtual Tours Shooting the ground help

This topic contains 4 replies, has 2 voices, and was last updated by Avatar Freddy K 2 months, 1 week ago.

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  • #19257
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    Freddy K
    Forum Member
    • Forum Posts: 6

    Greetings,

    All my tours done with HDR (Bracketing). When doing the last 2 shots of my panorama shooting down, I do 1 with Camera on the Tripod and 1 free hand without tripod, but the results are always blurry on stitch on free hand. Would love to hear your tips and tricks for shooting it.
    I tried to be creative and held the whole tripod on my shoulder but that didn’t work, it was a tiny bit better but still blurry.

    End up adding a Nadir Logo but at some points I don’t want to put a logo and that would look very unprofessional.

    Equipment:
    Canon 600D
    Canon EF 8-15mm f/4L USM Fisheye
    Nodal ninja NN3

    Sometimes I shoot at f5/f7/f11 depending on the place and lighting.

    Thank you for your help

    #19279
    Mohammad Jamei
    Mohammad Jamei
    Forum Member
    • Forum Posts: 1

    Hi, if by blurry you mean motion blur caused my camera vibrating when in your hand, increase ISO for your nadir shot. Higher ISO may cause some noise but it is usually less important on the bottom part of the image.

    #19280
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    Freddy K
    Forum Member
    • Forum Posts: 6

    Hi, if by blurry you mean motion blur caused my camera vibrating when in your hand, increase ISO for your nadir shot. Higher ISO may cause some noise but it is usually less important on the bottom part of the image.

    I’ll give that a try, thanks man.

    #19283
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    Freddy K
    Forum Member
    • Forum Posts: 6

    So after doing what you said, PTGui doesn’t recognize by bracketed images and can’t enable hdr combining, I’m screwed now, it a very long over night session with decorations, so any solutions ?

    #19284
    Avatar
    Freddy K
    Forum Member
    • Forum Posts: 6

    For anyone who see’s this and wants to learn from my experience, the reason PTGui doesn’t recognize the bracketed images is because the last 3 bracketed images done with free hand have different ISO and Exposure, so you can do this and it will work, quoted from PTGui FAQ.

    7.5. So I forgot to switch my camera to M mode; my bracketed images are taken in auto exposure mode. Can I still stitch them to HDR in PTGui Pro?
    You can trick PTGui into recognizing your images as bracketed exposures by modifying the exposure data in the Image Parameters tab. If you took sets of 3 bracketed exposures, copy the exposure times of the first three images into the remaining images. The result should be a repeating sequence, e.g. 1/25, 1/100, 1/400, 1/25, 1/100, 1/400, and so on. Switch PTGui Pro to Advanced mode to make the Image Parameters tab visible.

    However, the result will not be perfect. The automatic exposure has caused brightness differences between neighbouring images. The blender is able to make gradual adjustments, but it does not actually correct the exposure differences. Therefore we recommend to go back and take the bracketed images in manual exposure mode.

    As an alternative workaround you could take the images from only one bracket (e.g. only the 0EV images) and stitch those into a non-HDR panorama. For non-bracketed source images PTGui Pro can compensate for automatic exposure: in the HDR/Exposure tab enable the Exposure Compensation checkbox. Additionally PTGui Pro can apply tone mapping even to non-bracketed source images: enable the ‘Tone map stitched panorama’ checkbox in the HDR/Exposure tab.

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