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<blockquote data-quote="WayneF" data-source="post: 293571" data-attributes="member: 12496">Correct more or less.&nbsp; The View from the lens matches your numbers.However, the lens is what it is, period.&nbsp;&nbsp; If it says 50mm, it is 50 mm.&nbsp;&nbsp; The lens does not change by simply putting it on a DX or FX camera.But what does change is the view seen from that lens.&nbsp; Which is caused by the smaller DX sensor cropping that view smaller, or FX not cropping it so much.On any image seen in your photo editor, if you simply crop it much smaller (retaining only some smaller center part of it), and then enlarge that smaller cropped image to be viewed regular size again, THAT VIEW will appear &quot;closer&quot;, as if it were taken with a longer telephoto lens.&nbsp; This is what the smaller DX sensor crop does too.&nbsp;&nbsp; This is what the 1.5x crop factor does (smaller DX sensor crops the lens image).But the lens itself, or the uncropped image it projects, is not changed.<a href="http://www.scantips.com/lights/cropfactor.html" target="_blank">FX - DX Lens Crop Factor</a></blockquote>

[QUOTE="WayneF, post: 293571, member: 12496"] Correct more or less. The [B]View[/B] from the lens matches your numbers. However, the lens is what it is, period. If it says 50mm, it is 50 mm. The lens does not change by simply putting it on a DX or FX camera. But what does change is the[B] view[/B] seen from that lens. Which is caused by the smaller DX sensor cropping that view smaller, or FX not cropping it so much. On [B]any image[/B] seen in your photo editor, if you simply crop it much smaller (retaining only some smaller center part of it), and then enlarge that smaller cropped image to be viewed regular size again, THAT VIEW will appear "closer", as if it were taken with a longer telephoto lens. This is what the smaller DX sensor crop does too. This is what the 1.5x crop factor does (smaller DX sensor crops the lens image). But the lens itself, or the uncropped image it projects, is not changed. [URL="http://www.scantips.com/lights/cropfactor.html"]FX - DX Lens Crop Factor[/URL] [/QUOTE]

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