Magnification vs. Field of view (mm) Type 1 Type 2 Type 3 Type A Optical magnification Total 0.5× 18× magnification Field of View (mm) 9.33×7 Optical magnification Total 1× 36× magnification Field of View (mm) 1× 36× 4.67×3.5 2× 72× 4× 144× 7.5× 270× 2.33×1.75 1.165×0.875 0.622×0.467 2× 72× 4× 144× 8× 288× 15× 540× 4.67×3.5 2.33×1.75 1.165×0.875 0.582×0.437 0.311×0.233 Optical magnification Total 2× 72× 4× 144× 8× 288× 16× 576× 30× 1080× magnification Field of View (mm) 2.33×1.75 1.165×0.875 0.582×0.437 0.291×0.218 0.155×0.117 Optical magnification Total 0.35× 14× 0.6× 24× 7.8×5.8 1× 40× 4.7×3.5 1.8× 73× 2.6×1.9 3.5× 141× 1.33×1 magnification Field of View (mm) 13.3×10 * Total magnification specifications listed above are for a 20" monitor is set to the UXGA (1600 x 1200 pixels) mode.
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