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<blockquote data-quote="WayneF" data-source="post: 537358" data-attributes="member: 12496">If and buts...The field of view depends on the focal length, and the sensor size, and&nbsp; also on the specific distance to the subject.&nbsp;&nbsp; So any picture showing&nbsp; focal lengths also has to make some assumptions about the situation,&nbsp; both sensor size and distance.Sensor size because for example, DX sensors are smaller, and therefore crop the view seen by a larger sensor.&quot;Years ago&quot; probably referred to 35 mm film size?&nbsp; (same as a FX sensor size today)The &quot;angle of view&quot; (degrees) depends only on the focal length and the sensor size.Not the graphic answer you seek, but <a href="http://www.scantips.com/lights/fieldofview.html" target="_blank">Field of View Calculator</a>can compute both the field size and the angular size for the focal length and sensor that you describe to it.For example. 100mm lens on a DX sensor sees a view 13.4 degrees x 9 degrees size.&nbsp; The space that is seen there depends on the distance.It is true that a 600 mm lens will see an enlarged view 1/6 of the size of a 100 mm lens (the simple ratio of the two,&nbsp; 100/600 ).&nbsp; This is likely the most usable understanding.</blockquote>

[QUOTE="WayneF, post: 537358, member: 12496"] If and buts... The field of view depends on the focal length, and the sensor size, and also on the specific distance to the subject. So any picture showing focal lengths also has to make some assumptions about the situation, both sensor size and distance. Sensor size because for example, DX sensors are smaller, and therefore crop the view seen by a larger sensor. "Years ago" probably referred to 35 mm film size? (same as a FX sensor size today) The "angle of view" (degrees) depends only on the focal length and the sensor size. Not the graphic answer you seek, but [URL="http://www.scantips.com/lights/fieldofview.html"]Field of View Calculator[/URL] can compute both the field size and the angular size for the focal length and sensor that you describe to it. For example. 100mm lens on a DX sensor sees a view 13.4 degrees x 9 degrees size. The space that is seen there depends on the distance. It is true that a 600 mm lens will see an enlarged view 1/6 of the size of a 100 mm lens (the simple ratio of the two, 100/600 ). This is likely the most usable understanding. [/QUOTE]

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