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universal macro adapter ring automatic electronic focus close-up ring SLR accessories lens close-up ring

universal macro adapter ring automatic electronic focus close-up ring SLR accessories lens close-up ring

$53.56
$53.56
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Color

Product model: Canon close-up ring
Product size: 13mm 21mm 31mm
Ring material: metal

Ring combination Focusing distance Image coverage Camera distance Exposure factor Image magnification
13mm Infinity 10×15 6.9×10.3 21 16 1.5 1.8 0.24 0.35
21mm Infinity 6×9 4.7×7.0  13 14 2.0 2.3 0.40 0.51
31mm Infinity 3.3×5.0 2.9×4.4 7.7 7.0 3.0 3.4 0.72 0.83
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