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 Post subject: nodal point
PostPosted: Mon Feb 13, 2012 7:42 pm 
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How set the nodal Point accurately?


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PostPosted: Mon Feb 13, 2012 8:18 pm 
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Location: Isleham, Cambridgeshire, UK.
alvareznavalon wrote:
How set the nodal Point accurately?

Which camera and lens do you have?

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Nikon D40, Nikkor 10.5mm fisheye, Sigma 8mm f3.5 fisheye, Nikkor 18-55/50/35mm lenses, Nodal Ninja 5 Lite, Nodal Ninja 4 with R-D16, Agno's MrotatorTCS short.
Nikon P5100, CP5000, CP995, FC-E8, WC-E63,WC-E68, TC-E2, Kaidan Kiwi 995, Bophoto pano bracket, Agno's MrotatorA.
Merlin/Orion robotic pano head + Papywizard on Nokia 770/N800/N810 and Windows 8/XP/2K.


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PostPosted: Tue Feb 14, 2012 7:08 am 
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Location: Dane in Western Australia
search "the grid" online

Henrik


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 Post subject:
PostPosted: Tue Feb 14, 2012 8:40 am 
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Spam robot or not :) Let's ask the question and see the result ?


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PostPosted: Tue Feb 14, 2012 10:06 am 
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Location: Mont-Saint-André (Belgium)
Here is "The Grid" method:

The "original method"
http://www.outline.be/quicktime/tuto/

The "modified method:
http://www.rosaurophotography.com/html/technical7.html

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 Post subject:
PostPosted: Tue Feb 14, 2012 10:27 am 
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for verification you can see this post


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PostPosted: Tue Mar 06, 2012 12:36 pm 
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I used a simpler method from the comfort of my armchair.

Put a steel T bracket on the end of a bit of 25 x 25 mm pine and drilled the central hole out for a camera screw.

I then mounted the assembly onto the tribrach and tripod from a laser level kit.

The window in my living room has a single central divider so I pointed the camera at that with the zoom set to wide angle.

The camera was slid backwards and forwards until the background remained stationary relative to the window divider when the tribrach was rotated.

I then marked the wooden strip to record the position and wrote on the focal length.

Repeat every 50 mm until full zoom is reached.

I then had a simple mount for single-row panos which I could set to suit the required focal length.

The screws on the tribrach enable me to set the axis of rotation to vertical with a good degree of accuracy.

For panos sightly above or below the horizontal plane the wooden strip can be canted up or down before clamping.

Don't have a photo of the actual setup but it looked like this (a later version with a stiffer mount) http://www.flickr.com/photos/73571158@N00/2995521498/in/set-72157623635436569



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Last edited by a a gruntpuddock on Tue Mar 06, 2012 12:45 pm, edited 1 time in total.

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