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<blockquote data-quote="WayneF" data-source="post: 537615" data-attributes="member: 12496">Right, I certainly agree, in fact, that's what I just said...&nbsp; &quot;So it depends on what you mean by the photo &quot;works&quot;.&nbsp; It can show&nbsp; relative size, and we can draw these angles on any frame (which of&nbsp; course, drawing on the frame assumes the same sensor), but when we get&nbsp; into details about sensor size, we start having trouble with absolute&nbsp; sizes.&nbsp; Absolute size absolutely changes. And I would assume our only&nbsp; interest is a real world situation, at least about our own sensor size.&quot;
Field of view definitely ALSO depends on sensor size.&nbsp;&nbsp; DX and FX are unique, in that we can use the same lens on both, and then we notice sensor size differences.&nbsp;&nbsp; But when switching say to compact camera or sheet film view camera, then we also switch lenses to one appropriate for the size. intended to try to equalize the views.

If only considering the same one sensor size (the one that we use), then I think most of us will be satisfied to just know that 2x focal length gives 1/2 the view width, or 10x focal length gives 1/10 the view width.&nbsp; This conveys as much or more factual data than looking on drawn frames on an unfamiliar picture.&nbsp; But we should realize that when we switch DX and FX, we are going to see differences due to sensor size.

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[QUOTE="WayneF, post: 537615, member: 12496"] Right, I certainly agree, in fact, that's what I just said... "So it depends on what you mean by the photo "works". It can show relative size, and we can draw these angles on any frame (which of course, drawing on the frame assumes the same sensor), but when we get into details about sensor size, we start having trouble with absolute sizes. Absolute size absolutely changes. And I would assume our only interest is a real world situation, at least about our own sensor size."[LEFT][COLOR=#000000] Field of view definitely ALSO depends on sensor size. DX and FX are unique, in that we can use the same lens on both, and then we notice sensor size differences. But when switching say to compact camera or sheet film view camera, then we also switch lenses to one appropriate for the size. intended to try to equalize the views. If only considering the same one sensor size (the one that we use), then I think most of us will be satisfied to just know that 2x focal length gives 1/2 the view width, or 10x focal length gives 1/10 the view width. This conveys as much or more factual data than looking on drawn frames on an unfamiliar picture. But we should realize that when we switch DX and FX, we are going to see differences due to sensor size. [/COLOR][/LEFT] [/QUOTE]

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