Calibrating a Panoramic Head for Your Lens http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/rig/109263842_6K2ww-Ti.jpg http://dgrin.smugmug.com/gallery/2114189_783fC/ 2006-11-12T06:17:19Z Copyright 2009, the copyright holder of each photograph. Some portions copyright SmugMug. All rights reserved. SmugMug <p><a href="http://dgrin.smugmug.com">Digital Grin</a><br />Calibrating a Panoramic Head for Your Lens By Dave Watts. To eliminate the possibility of parallax errors (things not lining up properly) when stitching individual frames into panorami ...</p><p><a href="http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/2114189_783fC#109263842_6K2ww" title="Calibrating a Panoramic Head for Your Lens By Dave Watts. To eliminate the possibility of parallax errors (things not lining up properly) when stitching individual frames into panorami ..."><img src="http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/rig/109263842_6K2ww-Th.jpg" width="113" height="150" alt="Calibrating a Panoramic Head for Your Lens By Dave Watts. To eliminate the possibility of parallax errors (things not lining up properly) when stitching individual frames into panorami ..." title="Calibrating a Panoramic Head for Your Lens By Dave Watts. To eliminate the possibility of parallax errors (things not lining up properly) when stitching individual frames into panorami ..." style="border: 1px solid #000000;" /></a></p> 2009-08-13T04:07:52Z Digital Grin http://dgrin.smugmug.com http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/rig/109263842_6K2ww-Th.jpg <p><a href="http://dgrin.smugmug.com">Digital Grin</a><br />An L-plate made for your camera model allows a convenient and accurate method of quickly locating the lens' center line whether you're mounting the camera in landscape or portrait orientatio ...</p><p><a href="http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/2114189_783fC#109265316_yoPry" title="An L-plate made for your camera model allows a convenient and accurate method of quickly locating the lens' center line whether you're mounting the camera in landscape or portrait orientatio ..."><img src="http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/l-bracket/109265316_yoPry-Th.jpg" width="150" height="113" alt="An L-plate made for your camera model allows a convenient and accurate method of quickly locating the lens' center line whether you're mounting the camera in landscape or portrait orientatio ..." title="An L-plate made for your camera model allows a convenient and accurate method of quickly locating the lens' center line whether you're mounting the camera in landscape or portrait orientatio ..." style="border: 1px solid #000000;" /></a></p> 2009-08-13T03:51:09Z Digital Grin http://dgrin.smugmug.com http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/l-bracket/109265316_yoPry-Th.jpg <p><a href="http://dgrin.smugmug.com">Digital Grin</a><br />OK, so lets get busy determining the proper setting for our 22mm example. Make sure the head is level. We will place a couple of test targets in front of the lens and adjust the slide ...</p><p><a href="http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/2114189_783fC#109263185_ir6iZ" title="OK, so lets get busy determining the proper setting for our 22mm example. Make sure the head is level. We will place a couple of test targets in front of the lens and adjust the slide ..."><img src="http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/slide/109263185_ir6iZ-Th.jpg" width="150" height="113" alt="OK, so lets get busy determining the proper setting for our 22mm example. Make sure the head is level. We will place a couple of test targets in front of the lens and adjust the slide ..." title="OK, so lets get busy determining the proper setting for our 22mm example. Make sure the head is level. We will place a couple of test targets in front of the lens and adjust the slide ..." style="border: 1px solid #000000;" /></a></p> 2009-08-13T04:21:59Z Digital Grin http://dgrin.smugmug.com http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/slide/109263185_ir6iZ-Th.jpg <p><a href="http://dgrin.smugmug.com">Digital Grin</a><br />Our willing test targets set firmly (they're taped down!) on a table. Initially, they should line up perfectly while your camera is pointed straight ahead. One is very near; the other about ...</p><p><a href="http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/2114189_783fC#109263182_YpsPT" title="Our willing test targets set firmly (they're taped down!) on a table. Initially, they should line up perfectly while your camera is pointed straight ahead. One is very near; the other about ..."><img src="http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/setup/109263182_YpsPT-Th.jpg" width="150" height="113" alt="Our willing test targets set firmly (they're taped down!) on a table. Initially, they should line up perfectly while your camera is pointed straight ahead. One is very near; the other about ..." title="Our willing test targets set firmly (they're taped down!) on a table. Initially, they should line up perfectly while your camera is pointed straight ahead. One is very near; the other about ..." style="border: 1px solid #000000;" /></a></p> 2009-08-13T04:09:17Z Digital Grin http://dgrin.smugmug.com http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/setup/109263182_YpsPT-Th.jpg <p><a href="http://dgrin.smugmug.com">Digital Grin</a><br />Loosen the lock on the PCL-II panning clamp and swing the upper rig left and right noting the alignment of the targets. In this case the slide is too far back. The bad alignment is caused by ...</p><p><a href="http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/2114189_783fC#109263189_FVnnr" title="Loosen the lock on the PCL-II panning clamp and swing the upper rig left and right noting the alignment of the targets. In this case the slide is too far back. The bad alignment is caused by ..."><img src="http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/nodalback/109263189_FVnnr-Th.jpg" width="150" height="93" alt="Loosen the lock on the PCL-II panning clamp and swing the upper rig left and right noting the alignment of the targets. In this case the slide is too far back. The bad alignment is caused by ..." title="Loosen the lock on the PCL-II panning clamp and swing the upper rig left and right noting the alignment of the targets. In this case the slide is too far back. The bad alignment is caused by ..." style="border: 1px solid #000000;" /></a></p> 2009-08-13T04:18:30Z Digital Grin http://dgrin.smugmug.com http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/nodalback/109263189_FVnnr-Th.jpg <p><a href="http://dgrin.smugmug.com">Digital Grin</a><br />...This isn't good either. The nodal slide is too far forward and we have the opposite problem.</p><p><a href="http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/2114189_783fC#109263191_s7wU2" title="...This isn't good either. The nodal slide is too far forward and we have the opposite problem."><img src="http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/nodalforward/109263191_s7wU2-Th.jpg" width="150" height="93" alt="...This isn't good either. The nodal slide is too far forward and we have the opposite problem." title="...This isn't good either. The nodal slide is too far forward and we have the opposite problem." style="border: 1px solid #000000;" /></a></p> 2009-07-10T18:03:46Z Digital Grin http://dgrin.smugmug.com http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/nodalforward/109263191_s7wU2-Th.jpg <p><a href="http://dgrin.smugmug.com">Digital Grin</a><br />Success! No parallax error here. This setting is a winner. The two targets line up exactly no matter which way we swing the rig. Write this setting down somewhere. Repeat for each lens an ...</p><p><a href="http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/2114189_783fC#109263193_Ytbpm" title="Success! No parallax error here. This setting is a winner. The two targets line up exactly no matter which way we swing the rig. Write this setting down somewhere. Repeat for each lens an ..."><img src="http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/nodalcorrect/109263193_Ytbpm-Th.jpg" width="150" height="93" alt="Success! No parallax error here. This setting is a winner. The two targets line up exactly no matter which way we swing the rig. Write this setting down somewhere. Repeat for each lens an ..." title="Success! No parallax error here. This setting is a winner. The two targets line up exactly no matter which way we swing the rig. Write this setting down somewhere. Repeat for each lens an ..." style="border: 1px solid #000000;" /></a></p> 2009-08-13T03:56:10Z Digital Grin http://dgrin.smugmug.com http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/nodalcorrect/109263193_Ytbpm-Th.jpg <p><a href="http://dgrin.smugmug.com">Digital Grin</a><br />Notes: If you use zoom lenses, a lens' optical center (frequently and incorrectly referred to as the nodal point) changes for each focal setting. This means you'll need to calibrate for all ...</p><p><a href="http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/2114189_783fC#109881517_3ZDaH" title="Notes: If you use zoom lenses, a lens' optical center (frequently and incorrectly referred to as the nodal point) changes for each focal setting. This means you'll need to calibrate for all ..."><img src="http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/slide2/109881517_3ZDaH-Th.jpg" width="150" height="104" alt="Notes: If you use zoom lenses, a lens' optical center (frequently and incorrectly referred to as the nodal point) changes for each focal setting. This means you'll need to calibrate for all ..." title="Notes: If you use zoom lenses, a lens' optical center (frequently and incorrectly referred to as the nodal point) changes for each focal setting. This means you'll need to calibrate for all ..." style="border: 1px solid #000000;" /></a></p> 2009-08-13T08:19:41Z Digital Grin http://dgrin.smugmug.com http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/slide2/109881517_3ZDaH-Th.jpg