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<blockquote data-quote="Eyelight" data-source="post: 424586" data-attributes="member: 24753">Pure coincidence on the .45 and .46 magnification of the f/8 shots.&nbsp; I just eyeballed mine using the width of the flower.&nbsp; Easiset way to gauge 1:2 would be to place a rule in the view and just shoot 2x the width.The thought I had to stop and think.DX has a greater depth of field than FX at the&nbsp; same view size.&nbsp; If you take a DX and an FX and put a 50mm lens on both,&nbsp; the DX has to back up to get the same view.&nbsp; If you put a wider lens on&nbsp; the DX to match the FX 50mm view, the DX has the larger DoF.&nbsp; In both cases the DX is shooting at lower magnification.Put&nbsp; a 50mm on the DX and FX and shoot from the same distance, the FX will&nbsp; have a larger DoF.&nbsp; Similarly, doing macro work at 1:1 the FX has a&nbsp; larger DoF. This is because in both cases the magnification is the same,&nbsp; the DX image is smaller and must be enlarged more.</blockquote>

[QUOTE="Eyelight, post: 424586, member: 24753"] Pure coincidence on the .45 and .46 magnification of the f/8 shots. I just eyeballed mine using the width of the flower. Easiset way to gauge 1:2 would be to place a rule in the view and just shoot 2x the width. The thought I had to stop and think. DX has a greater depth of field than FX at the same view size. If you take a DX and an FX and put a 50mm lens on both, the DX has to back up to get the same view. If you put a wider lens on the DX to match the FX 50mm view, the DX has the larger DoF. In both cases the DX is shooting at lower magnification. Put a 50mm on the DX and FX and shoot from the same distance, the FX will have a larger DoF. Similarly, doing macro work at 1:1 the FX has a larger DoF. This is because in both cases the magnification is the same, the DX image is smaller and must be enlarged more. [/QUOTE]

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