View Full Version : Finding the NNP of My Camera - Please Help...
02-07-2011, 09:09 AM
Lens is canon 16-35 mm L series; camera is 5D, wondering if anyone out there has the same camera and lens and has determined a setting which will work for their NN. Please help. Complete newbie and having no luck with the recommended ways of figuring out my NNP. Thanks in advance....
02-07-2011, 01:22 PM
Popular tutorials on finding your NNP.
Numbers on charts are a good place to start, but only through shooting and stitching will you find "the point". After your rig is calibrated, your next task will be learning how to stitch. Learn each step as well as you can and you will have much success in creating panoramas.
I notice that you have had no luck with the recommended ways of finding your NNP, but this URL may give some clues:
The NNP will probably change as you change the focal length.
I don't have any experience with the Canon 16-35 mm lens, but presume you will be starting off with it set at 16 mm to use the minimum number of images to get your panorama.
I did measure the NNP for a Nikkor 18-55mm lens and found it was 23mm back from the front of the lens @ 18mm, which may be a reasonable starting point.
There has been a discussion about this @:
which may be of interest.
I hope this helps, and wish you all the best in creating stunning panoramas, Hugh.
02-08-2011, 05:53 AM
Hi and welcome to the forum.
I am Nikonian, so I have to use the wikipedia database: http://wiki.panotools.org/Entrance_Pupil_Database
URS = upper rail setting should be around 117,5. L1 = 38,5, L2 = 79 lens set to zoom 16
LRS = lower rail setting: H plus NN equipment. With my equipment it would end up at around 56. But I think others reported around 54 a time ago. So test your equipment with the link you already got.
For smooth's method try to focus to the panohead. When the saw cuts to the right, move the camera to the right from viewfinder position, till it is nearly round, then step 1 mm further to see the tooth changing direction cutting to the left. When the tooth in the beginning cuts to the left, move to the left.
URS: when the reference point moves with the turning direction of the camera, you have to move forward. When it moves against it, you have to move backwards on the upper rail.
Simple rule: " you are walking with a friend and want to stay at his side, you have to move forward with him. When he turns around and is moving to the opposite side, you have to go backwards to join him again."
02-08-2011, 06:56 AM
Look in database from Nodal Ninja:
Its a nice starting point.
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