martinangus Posted August 6, 2012 Share Posted August 6, 2012 <p>I know this must seem tiring to those who have a clear understanding of the two formats and what equates to what...</p> <p>I, (not a beginner), generally have the concepts clear until some expert says something such as "I like DX for the extra reach it gives me". "Reach" to me would refer to "zoom" rather than "crop"...no?<br /> I would like to achieve clarity on this issue by making a few statements and getting concensus as to their accuracy....so here goes:</p> <p>1.<strong> A 100mm FX lens used on a DX body</strong> will yield the same zoom factor (level of detail) as the same lens on an FX body. The image will be cropped (reduced field of view) on the DX body, but the lens will create the same image detail.</p> <p>2. <strong>A 100mm DX lens used on a DX body</strong> will yield the same zoom factor (level of detail) compared to a 100mm FX lens used on the DX body, Field of view will be the same as if a 100mm FX lens was used on an FX body.</p> <p>3. <strong>A <em>160mm</em> DX lens used on a DX body</strong> will produce the same zoom factor (level of detail) AND field of view as a 100mm FX lens on the same DX body.</p> <p>So, what do we think...does an FX lens on a DX body give "extra reach"?</p><div></div> Link to comment Share on other sites More sharing options...
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