Variable macro lens, C-mount

Working distance: distance between the front end of the mechanics and the object. Set this distance within ±3% of the nominal value for maximum resolution and minimum distortion. Working f-number (wf/N): the real f-number of a lens in operating conditions. Percent deviation of the real image compared to an ideal, undistorted image. Typical (average production) values and maximum (guaranteed) values are listed. At the borders of the field depth the image can be still used for measurement but, to get a very sharp image, only half of the nominal field depth should be considered. Pixel size used for calculation is 3.45 μm. Object side, calculated with the Rayleigh criterion with λ= 520 nm Measured from the front end of the mechanics to the camera flange.

Main optical specifications
Magnification		0.10.20.30.40.50.60.70.80.91.00.70.80.91.01.11.21.31.41.51.61.41.51.61.71.81.92.02.12.22.32.12.22.32.42.52.62.72.82.93.0
Number of back focal spacers		0000000000111111111122222222223333333333
Max sensor size		2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″2/3″

Object field of view
1/3”	(mm × mm)	48.00 x 36.0024.00 x 18.0016.00 x 12.0012.00 x 9.009.60 x 7.208.00 x 6.006.86 x 5.146.00 x 4.505.33 x 4.004.80 x 3.606.86 x 5.146.00 x 4.505.33 x 4.004.80 x 3.604.36 x 3.274.00 x 3.003.69 x 2.773.43 x 2.573.20 x 2.403.00 x 2.253.43 x 2.573.20 x 2.403.00 x 2.252.82 x 2.122.67 x 2.002.53 x 1.892.40 x 1.802.29 x 1.712.18 x 1.642.09 x 1.572.29 x 1.712.18 x 1.642.09 x 1.572.00 x 1.501.92 x 1.441.85 x 1.381.78 x 1.331.71 x 1.291.66 x 1.241.60 x 1.20
1/2.5”	(mm × mm)	57.00 x 42.8028.50 x 21.4019.00 x 14.2714.25 x 10.7011.40 x 8.569.50 x 7.138.14 x 6.117.13 x 5.356.33 x 4.765.70 x 4.288.14 x 6.117.13 x 5.356.33 x 4.765.70 x 4.285.18 x 3.894.75 x 3.574.38 x 3.294.07 x 3.063.80 x 2.853.56 x 2.684.07 x 3.063.80 x 2.853.56 x 2.683.35 x 2.523.17 x 2.383.00 x 2.252.85 x 2.142.71 x 2.042.59 x 1.952.48 x 1.862.71 x 2.042.59 x 1.952.48 x 1.862.38 x 1.782.28 x 1.712.19 x 1.652.11 x 1.592.04 x 1.531.97 x 1.481.90 x 1.43
1/2”	(mm × mm)	64.00 x 48.0032.00 x 24.0021.33 x 16.0016.00 x 12.0012.80 x 9.6010.67 x 8.009.14 x 6.868.00 x 6.007.11 x 5.336.40 x 4.809.14 x 6.868.00 x 6.007.11 x 5.336.40 x 4.805.82 x 4.365.33 x 4.004.92 x 3.694.57 x 3.434.27 x 3.204.00 x 3.004.57 x 3.434.27 x 3.204.00 x 3.003.76 x 2.823.56 x 2.673.37 x 2.533.20 x 2.403.05 x 2.292.91 x 2.182.78 x 2.093.05 x 2.292.91 x 2.182.78 x 2.092.67 x 2.002.56 x 1.922.46 x 1.852.37 x 1.782.29 x 1.712.21 x 1.662.13 x 1.60
1/1.8”	(mm × mm)	71.30 x 53.3035.65 x 26.6523.77 x 17.7717.83 x 13.3314.26 x 10.6611.88 x 8.8810.19 x 7.618.91 x 6.667.92 x 5.927.13 x 5.3310.19 x 7.618.91 x 6.667.92 x 5.927.13 x 5.336.48 x 4.855.94 x 4.445.48 x 4.105.09 x 3.814.75 x 3.554.46 x 3.335.09 x 3.814.75 x 3.554.46 x 3.334.19 x 3.143.96 x 2.963.75 x 2.813.57 x 2.673.40 x 2.543.24 x 2.423.10 x 2.323.40 x 2.543.24 x 2.423.10 x 2.322.97 x 2.222.85 x 2.132.74 x 2.052.64 x 1.972.55 x 1.902.46 x 1.842.38 x 1.78
2/3”	(mm × mm)	85.00 x 70.9042.50 x 35.4528.33 x 23.6321.25 x 17.7317.00 x 14.1814.17 x 11.8212.14 x 10.1310.63 x 8.869.44 x 7.888.50 x 7.0912.14 x 10.1310.63 x 8.869.44 x 7.888.50 x 7.097.73 x 6.457.08 x 5.916.54 x 5.456.07 x 5.065.67 x 4.735.31 x 4.436.07 x 5.065.67 x 4.735.31 x 4.435.00 x 4.174.72 x 3.944.47 x 3.734.25 x 3.554.05 x 3.383.86 x 3.223.70 x 3.084.05 x 3.383.86 x 3.223.70 x 3.083.54 x 2.953.40 x 2.843.27 x 2.733.15 x 2.633.04 x 2.532.93 x 2.442.83 x 2.36

Advanced optical specifications
Working distance (1)	(mm)	27513692716054504746463129282728282931323412141517192123252730791114161821232628
Focal length	(mm)	28282828282828282828282828282828282828282828282828282828282828282828282828282828
ƒ/N		5.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.35.3
Working ƒ/N (2)		667789910101191010111112121313141313141415151616171816171818191920202121
Distortion typical (max) (3)	(%)	0.10 0.10 0.08 0.05 0.04 0.03 0.03 0.02 0.01 0.01 0.03 0.02 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02
Depth of field (4)	(mm)	31.107.804.002.301.701.301.000.800.600.601.000.800.600.600.500.400.400.300.300.300.300.300.300.300.200.200.200.200.200.200.200.200.200.200.200.100.100.100.100.10
Resolution (5)	(μm)	3819151110108877887766665665655555555555555554

Mechanical specifications
Mount		CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
Phase adjustment		NoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNoNo
Length (6)	(mm)	50.850.850.850.850.850.850.850.850.850.869.369.369.369.369.369.369.369.369.369.387.887.887.887.887.887.887.887.887.887.8106.3106.3106.3106.3106.3106.3106.3106.3106.3106.3
Outer diameter	(mm)	28.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.028.0
Mass	(g)	6464646464646464646484848484848484848484104104104104104104104104104104124124124124124124124124124124