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PostPosted: Tue Jun 18, 2013 4:07 pm 
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Good day all,

In the past few months I have been punishing myself to perfect my shooting technique and stitching process. I have made successful attempts in finding the NO PARALAX POINT for my lens which is the (Samyang 8 mm f3.5 fisheye CS lens) and the guide i fillow is this one:michel.thoby.free.fr/SAMYANG/Early%20test%20repor...

But i am still not getting the PERFECT stitch. My problem is I don't' understand if I still need t work on the actually pupil entrance or is there a problem somewhere else. SO i have been working more on it and moving it back and forward and doing tests.

In the result i found out that my zenith causes problems now. Let me explain.

I shoot 6 shots at 60 degrees each and right after i point my camera up and shoot a zenith, then down and do 2 nadir shots and one handheld/ or tripod shot of the area.

The 6 shots, when stitched are PERFECT. but as soon as I add the Zenith or the Nadir, i get aberrations and Paralax.

Please advise what I should be doing since I think I am going in circles.

Could it also be that I am too close to my subjects? Because when i am doing testing in my room its small and i ALWAYS get errors.


Thank you so much for all you advise in advance.

Also you can contact me directly at

maxb@acmbphotography.com


-Max

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PostPosted: Tue Jun 18, 2013 6:50 pm 
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What when you stitch the 6 shot plus zenith? So without nadir?

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Regards, Hans Keesom
I stitch and render for other photographers. If you want to concentrate on your business and shooting you might want me do the stitching for you.


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PostPosted: Thu Jun 27, 2013 11:18 am 
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Or if you stitch all 8 shots using PTGui......try it much more efficient for VR spheres.

Greets, Ed

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Olympus OM-D with HLD-6, Fuji GX680, Samyang 7.5, Olympus 9-18, Sigma 19, Panasonic 14-45, Nikon 50 1.4 on Novoflex with tripod mount, Nikon 80-200, Panasonic 45-200, Fujinon 135, Fujinon 80, Fujinon 65, Fujinon 50, Gitzo Gilux Reporter 2, Sirui Ballhead and Panosaurus 2.0 NNP adapter, Arduino Uno.


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PostPosted: Fri Jun 28, 2013 9:08 pm 
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Octavias has disappeared into a cloud of logic Hans.....but I can say for sure that some FE have no true NPP....because the NPP is dependent on the direction of entrence of the lightrays as can be demonstrated using a laser pointer. I don't think the Samyang 8 has such a charisteristic:

http://www.hugha.co.uk/NodalPoint/Index.htm#Samyang%208mm

As you see the Gold ring is verry close to the Nodal point of the Samyang.

Greets, Ed.

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Fear leads to anger, anger leads to hate, hate leads to... suffering (c) Yoda.....

Olympus OM-D with HLD-6, Fuji GX680, Samyang 7.5, Olympus 9-18, Sigma 19, Panasonic 14-45, Nikon 50 1.4 on Novoflex with tripod mount, Nikon 80-200, Panasonic 45-200, Fujinon 135, Fujinon 80, Fujinon 65, Fujinon 50, Gitzo Gilux Reporter 2, Sirui Ballhead and Panosaurus 2.0 NNP adapter, Arduino Uno.


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