Model :
ALN-F1228-MPT
Model P/N :
ALN-F1228-MPT
Product Introduction
Dimensions
Focal Length 12mm
Max. Aperture Ratio 1:2.8
Max. Image Format 19.08mm x 13.03mm (ø23.1mm)
Operation RangeIris F2.8-F16.0
Focus 0.15m-Inf
ControlIris Manual
Focus Manual
Angle 
of 
View
D1.4'' 86.1° 1.2'' 76.6° 1.1" 71.6°
H 76.0° 61.9° 60.4°
V 56.2° 54.8° 46.1°
Operating Temperature -10°C - +50°C
proimages/Computar_Lens/MPT/ALN-F1228-MPT-尺寸圖.png
Optical Distortion 1.4" 0.13 1.2" -0.98 1.1" -1.23
Back Focal Length 10.8mm
Flange Back Length 17.526mm
Mount  C-Mount
Filter Size M72 P=0.75mm (with VM0811)*
Dimensions ø56.5mm x 64.8mm
ø75mm x 66.1mm(with TM-1243)
Weight 205g
*When using filters, lens requires TM-1243(for 12mm)(sold seperately)
Field of View
Working Distance Optical 
Magnification
Extension RingField of View
1.4''1.2''1.1"
(mm) (mm) H V H V H V
1000 0.012 - 1528.7 1081.4 1213.1 1047.7 1178.8 858.7
900 0.014 - 1426.7 974.6 1093.4 944.3 1062.4 773.9
800 0.015 - 1270.8 867.9 973.7 840.9 946.1 689.1
700 0.017 - 1114.8 761.1 854.0 737.4 829.8 604.3
600 0.020 - 958.8 654.4 734.3 634.0 713.4 519.5
500 0.024 - 802.9 547.6 614.6 530.6 597.1 434.7
450 0.027 - 724.9 494.3 554.7 478.9 538.9 392.3
400 0.030 - 646.9 440.9 494.8 427.1 480.8 349.9
350 0.034 - 568.9 387.5 435.0 375.4 422.6 307.5
300 0.040 - 490.9 334.1 375.1 323.7 364.4 265.1
250 0.047 - 412.8 280.7 315.2 272.7 306.2 222.7
200 0.058 - 334.8 227.3 255.3 220.2 248.0 180.3
150 0.076 - 256.7 173.9 195.4 168.5 189.8 137.8
100 0.110 - 178.7 120.7 135.7 116.9 131.8 95.6



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