http://dgrin.smugmug.com/gallery/2114189_783fC/ Calibrating a Panoramic Head for Your Lens http://www.smugmug.com/img/feed-icon.png Tutorials Wed, 30 Nov -001 00:00:00 -0800 Sun, 12 Nov 2006 14:17:19 -0800 http://www.smugmug.com/ Copyright 2009, the copyright holder of each photograph. Some portions copyright SmugMug. All rights reserved. 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/ http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/2114189_783fC#109263842_6K2ww <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> Tutorials Thu, 09 Nov 2006 21:35:58 -0800 nobody@smugmug.com (Digital Grin) http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/rig/109263842_6K2ww-Th.jpg 585cd95c9cd82a989f6c7ae16fac2c2f 7541a4b2fcae0f608b239a6776827b46 bf4d433009c7447729f189a5652abcbb a32bf588afac8d5519364099da04a44d 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><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> Tutorials nodal point, panoramas, really right stuff, pano Digital Grin Digital Grin http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/2114189_783fC#109265316_yoPry <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> Tutorials Thu, 09 Nov 2006 21:45:45 -0800 nobody@smugmug.com (Digital Grin) http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/l-bracket/109265316_yoPry-Th.jpg f468dbe26d5489de311e375e60feab21 dd0e2080877ea859daa6770cb9e28d3d e54860767af531974eb7c599d8abbce6 e54860767af531974eb7c599d8abbce6 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><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> Tutorials nodal point, panoramas, really right stuff, pano Digital Grin Digital Grin http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/2114189_783fC#109263185_ir6iZ <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> Tutorials Thu, 09 Nov 2006 21:32:19 -0800 nobody@smugmug.com (Digital Grin) http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/slide/109263185_ir6iZ-Th.jpg 242427579294b91d2076c259b4a70a3f dacea45be815ac9f334b254b860f4643 7583e048aab78de103e94aa6ddecbd4b 7583e048aab78de103e94aa6ddecbd4b 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><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> Tutorials nodal point, panoramas, really right stuff, pano Digital Grin Digital Grin http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/2114189_783fC#109263182_YpsPT <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> Tutorials Thu, 09 Nov 2006 21:32:18 -0800 nobody@smugmug.com (Digital Grin) http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/setup/109263182_YpsPT-Th.jpg 5e89d8a62dc235c46a8818f13cede7ff bcc497d9500d33a11b46f4fc5a7a6244 fa6c551061773d529e2ff2df93eb4801 fa6c551061773d529e2ff2df93eb4801 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><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> Tutorials nodal point, panoramas, really right stuff, pano Digital Grin Digital Grin http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/2114189_783fC#109263189_FVnnr <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> Tutorials Thu, 09 Nov 2006 21:32:19 -0800 nobody@smugmug.com (Digital Grin) http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/nodalback/109263189_FVnnr-Th.jpg 20d12ddfdb5eb8ffabf042df93e4ab13 5967cb737a721de1613469e050b24714 bb9d2b5ba23e965d226efc48e3b75bf8 bb9d2b5ba23e965d226efc48e3b75bf8 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><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> Tutorials nodal point, panoramas, really right stuff, pano Digital Grin Digital Grin http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/2114189_783fC#109263191_s7wU2 <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> Tutorials Thu, 09 Nov 2006 21:32:20 -0800 nobody@smugmug.com (Digital Grin) http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/nodalforward/109263191_s7wU2-Th.jpg 9f15922981b7476a8f357c501e1be9e1 d7ee6ce6cbfaf99dd7845ed7965db38a 4dc7e0649ab07bac9e4af13d01d0da14 4dc7e0649ab07bac9e4af13d01d0da14 ...This isn't good either. The nodal slide is too far forward and we have the opposite problem. <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> Tutorials nodal point, panoramas, really right stuff, pano Digital Grin Digital Grin http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/2114189_783fC#109263193_Ytbpm <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> Tutorials Thu, 09 Nov 2006 21:32:20 -0800 nobody@smugmug.com (Digital Grin) http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/nodalcorrect/109263193_Ytbpm-Th.jpg 1361df1605845f47bb1895cd9bd954ff 8c6e33187f5d3ac7cccd90897686fb63 bb1761a01b7b56532be8542545f2cdc2 bb1761a01b7b56532be8542545f2cdc2 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><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> Tutorials nodal point, panoramas, really right stuff, pano Digital Grin Digital Grin http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/2114189_783fC#109881517_3ZDaH <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> Tutorials Sun, 12 Nov 2006 14:17:19 -0800 nobody@smugmug.com (Digital Grin) http://dgrin.smugmug.com/Tutorials/Shooting-Tech-and-Tips/Finding-The-Nodal-Point-of/slide2/109881517_3ZDaH-Th.jpg 48a89c0c0900052bdd39091f257ea4a2 6ff4e3bdf4bcc23d4b06a0f5f232ace4 e5649b0483ef51d23ecd0d86d3e31322 e5649b0483ef51d23ecd0d86d3e31322 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><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> Tutorials nodal point, panoramas, really right stuff, pano Digital Grin Digital Grin