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    <title>topic Re: Problem with my lens specification... in EF &amp; RF Lenses</title>
    <link>https://community.usa.canon.com/t5/EF-RF-Lenses/Problem-with-my-lens-specification/m-p/32575#M21636</link>
    <description>&lt;P&gt;I'm not sure what it is you are looking for. &amp;nbsp;All of the pertinent lens info is available elsewhere in the exif data, per the picture that you posted, under lens?&lt;/P&gt;</description>
    <pubDate>Fri, 05 Jul 2013 03:17:33 GMT</pubDate>
    <dc:creator>diverhank</dc:creator>
    <dc:date>2013-07-05T03:17:33Z</dc:date>
    <item>
      <title>Problem with my lens specification...</title>
      <link>https://community.usa.canon.com/t5/EF-RF-Lenses/Problem-with-my-lens-specification/m-p/32455#M21635</link>
      <description>&lt;P&gt;&lt;FONT size="4" face="andale mono,times"&gt;I am using the 5d Mark ii with a canon 2.8/20mm lens.&amp;nbsp; Problem I am having is with a third pary 3d software and integrating Tiff files. &lt;/FONT&gt;&lt;/P&gt;&lt;P&gt;&lt;FONT size="4" face="andale mono,times"&gt;&amp;nbsp;&lt;/FONT&gt;&lt;/P&gt;&lt;P&gt;&lt;FONT size="4" face="andale mono,times"&gt;&lt;FONT size="5"&gt;&lt;SPAN style="font-size: 12.0pt; font-family: 'Times New Roman','serif'; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;"&gt;T&lt;FONT face="andale mono,times"&gt;he&lt;/FONT&gt; dialogs are being thrown up by the 3rd party TIFF library &lt;FONT face="andale mono,times"&gt;that are being used&lt;/FONT&gt; and indicate some issues with the EXIF data embedded in the image file by the camera. &lt;/SPAN&gt;&lt;FONT size="4"&gt;It has to do with my lens specification reading the minimum focal length. &lt;/FONT&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&lt;IMG border="0" src="https://community.usa.canon.com/t5/image/serverpage/image-id/2055i1F635B5E2BD77E33/image-size/original?v=mpbl-1&amp;amp;px=-1" align="middle" alt="Capture.JPG" title="Capture.JPG" /&gt;&lt;/P&gt;&lt;P&gt;&lt;FONT size="4" face="andale mono,times"&gt;I have done a bit of research on this and found this information from here: &lt;A target="_blank" href="http://www.cipa.jp/english/hyoujunka/kikaku/pdf/DC-008-2010_E.pdf"&gt;http://www.cipa.jp/english/hyoujunka/kikaku/pdf/DC-008-2010_E.pdf&lt;/A&gt; &lt;/FONT&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&lt;FONT size="4" face="andale mono,times"&gt;&lt;EM&gt;&lt;STRONG&gt;LensSpecification &lt;/STRONG&gt;&lt;/EM&gt;&lt;/FONT&gt;&lt;/P&gt;&lt;DIV&gt;&lt;FONT size="4" face="andale mono,times"&gt;&lt;EM&gt;&lt;STRONG&gt;This tag notes minimum focal length, maximum focal length, minimum F number in the minimum &lt;/STRONG&gt;&lt;/EM&gt;&lt;/FONT&gt;&lt;/DIV&gt;&lt;DIV&gt;&lt;FONT size="4" face="andale mono,times"&gt;&lt;EM&gt;&lt;STRONG&gt;focal length, and minimum F number in the maximum fo&lt;/STRONG&gt;&lt;/EM&gt;&lt;/FONT&gt;&lt;/DIV&gt;&lt;DIV&gt;&lt;FONT size="4" face="andale mono,times"&gt;&lt;EM&gt;&lt;STRONG&gt;cal length, which are specification information &lt;/STRONG&gt;&lt;/EM&gt;&lt;/FONT&gt;&lt;/DIV&gt;&lt;DIV&gt;&lt;FONT size="4" face="andale mono,times"&gt;&lt;EM&gt;&lt;STRONG&gt;for the lens that was used in photography. &lt;FONT color="#FF0000"&gt;When &lt;/FONT&gt;&lt;/STRONG&gt;&lt;/EM&gt;&lt;/FONT&gt;&lt;/DIV&gt;&lt;DIV&gt;&lt;FONT size="4" face="andale mono,times" color="#FF0000"&gt;&lt;EM&gt;&lt;STRONG&gt;the minimum F number is unknown, the notation is &lt;/STRONG&gt;&lt;/EM&gt;&lt;/FONT&gt;&lt;/DIV&gt;&lt;DIV&gt;&lt;FONT size="4" face="andale mono,times"&gt;&lt;EM&gt;&lt;STRONG&gt;&lt;FONT color="#FF0000"&gt;0/0.&lt;/FONT&gt; &lt;/STRONG&gt;&lt;/EM&gt;&lt;/FONT&gt;&lt;/DIV&gt;&lt;DIV&gt;&lt;FONT size="5"&gt;&lt;EM&gt;&lt;STRONG&gt;&lt;FONT color="#FF0000"&gt;Tag = 42034 (A432.H)&lt;/FONT&gt; &lt;/STRONG&gt;&lt;/EM&gt;&lt;/FONT&gt;&lt;/DIV&gt;&lt;DIV&gt;&lt;FONT size="4" face="andale mono,times"&gt;&lt;EM&gt;&lt;STRONG&gt;Type = RATIONAL &lt;/STRONG&gt;&lt;/EM&gt;&lt;/FONT&gt;&lt;/DIV&gt;&lt;DIV&gt;&lt;FONT size="4" face="andale mono,times"&gt;&lt;EM&gt;&lt;STRONG&gt;Count = 4 &lt;/STRONG&gt;&lt;/EM&gt;&lt;/FONT&gt;&lt;/DIV&gt;&lt;DIV&gt;&lt;FONT size="4" face="andale mono,times"&gt;&lt;EM&gt;&lt;STRONG&gt;Default = None &lt;/STRONG&gt;&lt;/EM&gt;&lt;/FONT&gt;&lt;/DIV&gt;&lt;DIV&gt;&lt;FONT size="4" face="andale mono,times"&gt;&lt;EM&gt;&lt;STRONG&gt;Value 1 := Minimum focal length (unit: mm) &lt;/STRONG&gt;&lt;/EM&gt;&lt;/FONT&gt;&lt;/DIV&gt;&lt;DIV&gt;&lt;FONT size="4" face="andale mono,times"&gt;&lt;EM&gt;&lt;STRONG&gt;Value 2 : = Maximum focal length (unit: mm) &lt;/STRONG&gt;&lt;/EM&gt;&lt;/FONT&gt;&lt;/DIV&gt;&lt;DIV&gt;&lt;FONT size="4" face="andale mono,times"&gt;&lt;EM&gt;&lt;STRONG&gt;Value 3 : = Minimum F number in the minimum focal length &lt;/STRONG&gt;&lt;/EM&gt;&lt;/FONT&gt;&lt;/DIV&gt;&lt;P&gt;&lt;FONT size="4" face="andale mono,times"&gt;&lt;EM&gt;&lt;STRONG&gt;Value 4 : =&lt;/STRONG&gt;&lt;/EM&gt;&lt;/FONT&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&lt;IMG border="0" src="https://community.usa.canon.com/t5/image/serverpage/image-id/2053i4BDED2D9C1F6E489/image-size/original?v=mpbl-1&amp;amp;px=-1" align="middle" alt="Metadata Lens f value 0.JPG" title="Metadata Lens f value 0.JPG" /&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&lt;FONT size="4" face="andale mono,times"&gt;So a couple of questions....why is my camera not setting this value for me? Is there a way that I can manually set the value? &lt;/FONT&gt;&lt;/P&gt;&lt;P&gt;&lt;FONT size="4" face="andale mono,times"&gt;&amp;nbsp;&lt;/FONT&gt;&lt;/P&gt;&lt;P&gt;&lt;FONT size="4" face="andale mono,times"&gt;Any thoughts appreciated!&lt;BR /&gt;&lt;/FONT&gt;&lt;/P&gt;&lt;P&gt;&lt;FONT size="4" face="andale mono,times"&gt;&amp;nbsp;&lt;/FONT&gt;&lt;/P&gt;</description>
      <pubDate>Wed, 03 Jul 2013 16:32:51 GMT</pubDate>
      <guid>https://community.usa.canon.com/t5/EF-RF-Lenses/Problem-with-my-lens-specification/m-p/32455#M21635</guid>
      <dc:creator>Servocrank</dc:creator>
      <dc:date>2013-07-03T16:32:51Z</dc:date>
    </item>
    <item>
      <title>Re: Problem with my lens specification...</title>
      <link>https://community.usa.canon.com/t5/EF-RF-Lenses/Problem-with-my-lens-specification/m-p/32575#M21636</link>
      <description>&lt;P&gt;I'm not sure what it is you are looking for. &amp;nbsp;All of the pertinent lens info is available elsewhere in the exif data, per the picture that you posted, under lens?&lt;/P&gt;</description>
      <pubDate>Fri, 05 Jul 2013 03:17:33 GMT</pubDate>
      <guid>https://community.usa.canon.com/t5/EF-RF-Lenses/Problem-with-my-lens-specification/m-p/32575#M21636</guid>
      <dc:creator>diverhank</dc:creator>
      <dc:date>2013-07-05T03:17:33Z</dc:date>
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