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Message: <blockquote data-quote="Eyelight" data-source="post: 795674" data-attributes="member: 24753">This comparison uses the same aperture (f/11) and same subject/view size (16.78”) with four different focal lengths.<ul> <li data-xf-list-type="ul">The red line represents the width of the subject/view. </li> <li data-xf-list-type="ul">Positions a, b, c and d represent camera positions using the four focal lengths in the table. </li> <li data-xf-list-type="ul">Black lines represent angle of view for each focal length. </li> <li data-xf-list-type="ul">Distance for each calculated using cad software. </li> <li data-xf-list-type="ul">Depth of field info calculated using Photo Caddie. </li> </ul>[ATTACH]98534[/ATTACH]<table style='width: 100%'><tr><td>Position</td><td>Focal Length</td><td>Angle of View</td><td>Distance</td><td>Depth of Field</td><td>Front DOF</td><td>Back DOF</td></tr><tr><td>a</td><td>200mm</td><td>8˚</td><td>120”</td><td>3.87</td><td>1.90</td><td>1.96</td></tr><tr><td>b</td><td>55mm</td><td>28˚ 50’</td><td>32.64”</td><td>3.79</td><td>1.79</td><td>2.01</td></tr><tr><td>C</td><td>40mm</td><td>38˚ 50’</td><td>23.81”</td><td>3.83</td><td>1.76</td><td>2.07</td></tr><tr><td>D</td><td>18mm</td><td>76˚</td><td>10.74”</td><td>3.95</td><td>1.62</td><td>2.32</td></tr></table></blockquote>