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Hello,
I'm Grzegorz from Poland. Recently I made a giga panorama out of 1053 photos in AutoPano. The panorama is available under this link: http://panoramaczestochowy.pl/spacery/c … ssona.html.
In my panorama the sky is not made properly. The sky consists of something like „squares”.
Thank you very much in advance for any advice how to solve my problem
Cheers
Grzegorz
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grzesczwa wrote:
In my panorama the sky is not made properly. The sky consists of something like „squares”.
Thank you very much in advance for any advice how to solve my problem
Welcome to the forum...
I think that is probably due to vignetting.
http://toothwalker.org/optics/vignetting.html
http://en.wikipedia.org/wiki/Vignetting
Last edited by mediavets (2012-05-14 13:30:23)
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mediavets wrote:
[
I think that is probably due to vignetting.
I agree - but i guess color-correction should easily handle that. I remember it was very effective once . . 
best, Klaus
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I don't know what it is, but it does not look like vignetting.
It has some repeating patterns. How is it shot? A rig with several cameras ?
leifs
Last edited by leifs (2012-05-14 22:41:50)
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Kind of camera(s) and sensor ? Amount of overlaping ? Postprocessing of images ?
It looks like there are two different exposures and very small overlapping.
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Yes, strange. I also doubt it is vignetting, but whatelse ...
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All images were taken with the parameters
Camera: Canon 600D
ISO: 200
Exposure time: 1/250
Aperture: 11
Lens: Canon EF 70-300mm f/4.0-5.6 IS USM set to 300 mm
GigaPan EPIC Pro
Last edited by grzesczwa (2012-05-15 18:07:18)
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I have the same effect on my panoramas as seen here :
http://vklaffehn.vk.funpic.de/cms/index … ;Itemid=53
Shot like most of my panos with a Canon PowerShot 590is, but if I remember correctly, these patterns weren't so strong in earlier versions of APG, maybe I try an older version to see the difference. I played with the multiband level, but its always quite visible.
MfG
Volker Klaffehn
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grzesczwa wrote:
All images were taken with the parameters
Camera: Canon 600D
ISO: 200
Exposure time: 1/250
Aperture: 11
Lens: Canon EF 70-300mm f/4.0-5.6 IS USM set to 300 mm
GigaPan EPIC Pro
Do you see the same effect when you stitch using the Gigapan Stitcher software?
Gigapan Stitch.efx claims to have a feature that specifically handles vignetting:
http://www.gigapan.com/cms/shop/softwar … stitch-efx
Last edited by mediavets (2012-05-15 23:02:18)
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I do not use this software Gigapan Stitcher
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vklaffehn wrote:
I have the same effect on my panoramas as seen here :
http://vklaffehn.vk.funpic.de/cms/index … ;Itemid=53
This is more like vignetting.
The bands at the short side is more prominent than at the long side and there is a dark area in all the corners.
leifs
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Ok, I see the difference. Leifs, could you please tell how you have created those images? Would be helpfull to do that on my own :-) Just increasing contrast and convert to b&w?
MfG
Volker Klaffehn
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vklaffehn wrote:
Ok, I see the difference. Leifs, could you please tell how you have created those images? Would be helpfull to do that on my own :-) Just increasing contrast and convert to b&w?
MfG
Volker Klaffehn
I don't know if this is the ultimate way to explore vignetting, but it works. I do it like this:
- open the image in Photoshop 12 (CS5)
- image -> adjustments -> gradiant map
- choose preset = Black, White
- move the lower slider to the right (e.g. location=40%)
There it is
leifs
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I sent the photo files to the server problem_with_the_sky.zip
Last edited by grzesczwa (2012-05-22 11:38:57)
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