NN5L settings for my 30D/12-24mm?  

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Ath
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NN5L settings for my 30D/12-24mm?

by Ath » Tue Jun 03, 2008 1:03 pm

I cant find any settings on the web for the lens I have using google
(Sigma 12-24mm EX DG).

I assume the lower arm is 50.5mm as it stays the same for my 30D.

What about the upper arm for my Sigma 12-24mm with this camera?

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mediavets
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by mediavets » Tue Jun 03, 2008 5:02 pm

Andrew Stephens
Many different Nodal Ninja and Agnos pano heads. Merlin/Panogear mount with Papywizard on Nokia Internet tablets.
Nikon D5100 and D40, Sigma 8mm f3.5 FE, Nikon 10.5mm FE, 35mm, 50mm, 18-55mm, 70-210mm. Promote control.

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Ath
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by Ath » Wed Jun 04, 2008 3:12 am

That was the first place I checked...

I found this online

"An example if the position of the entrance pupil is known:

Distance film/sensor plane to dome glass, Sigma 12-24mm @12mm, Canon mount:

required min. focusing distance = L(inf) + 4,4cm (flange focal length) + 7,43cm (bayonet to entrance pupil) + r (dome radius)
"

http://wetpixel.com/i.php/full/dome-theory/

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Ath
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by Ath » Wed Jun 04, 2008 6:47 am

Okay I rang CR Kennedy (Sigma service point here in Australia)

They gave me the following data (film plane to points, for canon mount)
12mm focal:
First point 104.5mm
Rear point 12.4mm

24mm focal:
First point 94.2mm
Rear point 23.1mm


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