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<?xml-stylesheet type="text/xsl" href="https://communities.bentley.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/"><channel><title>Use of Camera Zoom in ContextCapture</title><link>https://communities.bentley.com/products/3d_imaging_and_point_cloud_software/w/wiki/27134/use-of-camera-zoom-in-contextcapture</link><description /><dc:language>en-US</dc:language><generator>Telligent Community 12</generator><item><title>Use of Camera Zoom in ContextCapture</title><link>https://communities.bentley.com/products/3d_imaging_and_point_cloud_software/w/wiki/27134/use-of-camera-zoom-in-contextcapture</link><pubDate>Wed, 03 Feb 2021 11:14:52 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:087f4ec1-4c17-4bcf-998a-b12a3c4f8c19</guid><dc:creator>Felix James</dc:creator><comments>https://communities.bentley.com/products/3d_imaging_and_point_cloud_software/w/wiki/27134/use-of-camera-zoom-in-contextcapture#comments</comments><description>Current Revision posted to ContextCapture | Descartes | Pointools | Orbit Wiki by Felix James on 2/3/2021 11:14:52 AM&lt;br /&gt;
&lt;p&gt;&lt;strong&gt;&lt;span style="font-size:150%;"&gt;&lt;span style="text-decoration:underline;"&gt;Question:&lt;/span&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;Can you use the zoom function on a camera?&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;&lt;span style="text-decoration:underline;"&gt;&lt;span style="font-size:150%;"&gt;Answer:&lt;/span&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;Using a fixed focal length throughout the acquisition process is recommended. To achieve a non-uniform projected pixel size, vary the distance to the subject. If you cannot avoid several focal length settings, e.g., if the distance to the subject is constrained, shoot several series of photographs, each with a fixed focal length. When using a zoom lens, make sure its position remains fixed over a series of photographs. You can use a piece of adhesive tape with a manual zoom lens to keep it in place. Wide-angle or fish-eye lens can be used if the suited camera model type is specified,&amp;nbsp;&lt;i&gt;ContextCapture&lt;/i&gt;&amp;nbsp;can automatically estimate extreme lens distortion. Do not use digital zoom.&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;h1&gt;&lt;b&gt;&lt;img style="border-width:0px;" alt=" " src="/cfs-file.ashx/__key/communityserver-components-sitefiles/TSG-Logo.png" height="60" width="189" /&gt;&lt;/b&gt;&lt;/h1&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;
</description></item><item><title>Use of Camera Zoom in ContextCapture</title><link>https://communities.bentley.com/products/3d_imaging_and_point_cloud_software/w/wiki/27134/use-of-camera-zoom-in-contextcapture/revision/1</link><pubDate>Fri, 11 Mar 2016 18:35:10 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:087f4ec1-4c17-4bcf-998a-b12a3c4f8c19</guid><dc:creator>Jacquelyn Pettus</dc:creator><comments>https://communities.bentley.com/products/3d_imaging_and_point_cloud_software/w/wiki/27134/use-of-camera-zoom-in-contextcapture#comments</comments><description>Revision 1 posted to ContextCapture | Descartes | Pointools | Orbit Wiki by Jacquelyn Pettus on 3/11/2016 6:35:10 PM&lt;br /&gt;
&lt;p&gt;&lt;strong&gt;&lt;span style="font-size:150%;"&gt;&lt;span style="text-decoration:underline;"&gt;Question:&lt;/span&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;Can you use the zoom function on a camera?&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;&lt;span style="text-decoration:underline;"&gt;&lt;span style="font-size:150%;"&gt;Answer:&lt;/span&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;Using a fixed focal length throughout the acquisition process is recommended. To achieve a non-uniform projected pixel size, vary the distance to the subject. If you cannot avoid several focal length settings, e.g., if the distance to the subject is constrained, shoot several series of photographs, each with a fixed focal length. When using a zoom lens, make sure its position remains fixed over a series of photographs. You can use a piece of adhesive tape with a manual zoom lens to keep it in place. Wide-angle or fish-eye lens can be used if the suited camera model type is specified,&amp;nbsp;&lt;i&gt;ContextCapture&lt;/i&gt;&amp;nbsp;can automatically estimate extreme lens distortion. Do not use digital zoom.&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;
&lt;h1&gt;&lt;b&gt;&lt;img style="border-width:0px;" alt=" " src="/cfs-file.ashx/__key/communityserver-components-sitefiles/TSG-Logo.png" height="60" width="189" /&gt;&lt;/b&gt;&lt;/h1&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;
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