Automatically measures lens spherical aberration using the Shack-Hartmann method, compatible with lenses ranging from 20 to 500mm. Image processing with high-resolution CMOS.

Specifications Measurement Range: LV -4.00~19.00 (K: 1.3, ISO 100) K value 1.0~2.0 cd/㎡ 0.00875~73370 rlx 0.02448~230500 Display Range: LV: -5.85 ~ 19.44 (K1.3, ISO 100) cd/㎡: 0.00243 ~ 99520 rlx: 0.00764 ~ 312700 Measurement Accuracy: ±3% or less (20℃, ±5°) Display Functions: Data hold (holds displayed value) Backlight (5 seconds or continuous) AUTO POWER OFF (approximately 5 minutes) *Does not operate when using AC adapter External Communication: RS communication, USB communication (data output, mode switching, various settings possible) Auto calibration function compatible with Tsubosaka brightness box (for some products only) Light Receiving Element: 10Φ Si photodiode, sensitivity wavelength range 400~700nm Power Supply: Two AA batteries, AC adapter Dimensions and Weight: 141 (W) × 34.5 (H) × 81 (D) mm, approximately 310g (230g without silicone cover)

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