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Shooting the Nadir.

RadialImages

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Tuesday, June 23rd 2009, 5:21pm

Shooting the Nadir.

I was on a shoot yesterday, i shot somewhere near 60 panoramas. I used to leave the camera in my panohead to shoot the nadir and then take the tripod out in photoshop, but I shot each nadir handheld yesterday hoping that it would cut down my time in post-processing. On 90% of my panoramas there are stitching errors only on the nadir, most are minor, some are major. I just upgraded to autopano giga, and thought that might be the issue, but i tried some of the same panos in autopano pro and got the same exact errors.

My question is, how do you shoot your nadir? Theres probably something obvious that i'm missing. Thanks!

Phil

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Tuesday, June 23rd 2009, 6:46pm

This might be a good question for the autopano.net forum. I shoot the nadir from the tripod and hand held just like you but I'm using PTGui for the stitching.

Phil

RadialImages

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Tuesday, June 23rd 2009, 6:54pm

I just downloaded the trial of PTgui, i'll give it a try and see if i get the same results.

Phil

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Wednesday, June 24th 2009, 12:32am

This might help if you're testing PTGui.

PTGUI PRO -VIEWPOINT TUTORIAL

Phil

milotimbol

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Wednesday, June 24th 2009, 1:39am

That's a very good tutorial. thanks for sharing!
Krpano YouTube Tutorials
exsight360.com

Richard

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Wednesday, June 24th 2009, 6:51am

I tried all sorts of methods and must have read every tutorial out there. I was finding that the nadir was soaking up far too much time in my thinking and worrying and post production work. But I hate going the easy way and restricting the view, or putting in a mirror ball or big logo. (I also read that PTGui tutorial a while ago above and tried that way.).

Now I simply don't shoot a nadir at all. Since I use the Sigma 8mm fisheye, by tilting up by 5-degrees I cover the zenith and have just a tiny circle at the nadir which corresponds to the nadir tripod circle anyway. I process in PTGui, then use the KR droplet to convert to cubic. Now I have a perfect "normal view" nadir which is very easy to patch and clone. Save that, then convert with other KR droplets to whatever you want.

Now all the nadir agony is over. I don't shoot a nadir, I don't think about nadirs, and the clone job sometimes takes less than a minute.

djuna

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Monday, May 24th 2010, 8:44am

SuperCubic

I like the "SuperCubic" Photoshop plugin. Generates just the zenith and nadir cube faces for easy editing.

http://www.superrune.com/technical/software_supercubic.php

Dr. Schneckem

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Monday, May 24th 2010, 3:33pm

Why don't you just use the krpano make cube tool?
0100011101101100011001010110100101100011 0110100000100000011010110110110001100001 0111010001110011011000110110100001110100 0110010101110100001011000010000001001010 0111010101101110011001110110010100101110 0010000001000101011000110110100001110100 0010000001101010011001010111010001111010 0111010000101110

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