LMK mobile R

High quality system camera for luminance photography

The application of high-quality digital cameras in the LMK-system allows an easy and fast capture of luminance images. For evaluating the images, the complete functionality of the LMK LabSoft software can also be utilized.

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Technical data

Sensor
CMOS Canon 35 mm format
6249 (H) x 4160 (V) Resolution of the image receiver
3132 (H) x 2090 (V) Resolution of the luminance image
14 bit CR3 image files with RGB layer structure, uncompressed
Dynamic range:
Single picture measurement (SinglePic)
[ 1:4000 ]
High Dynamic measurement (AEB)
[ 1:30000 (1/1000 sec. < ti < 8 sec.) ]
Data interface:
USB 3.0/Wi-Fi and/or SD/SDHC memory card
Focal Length / Visual field angle:
  • Focal length 35 mm: 57°(H) x 38°(V)
Selection of measuring range
Selecting aperture, exposure time and ISO speed

Metrological specification

Spectral matching
Numerical transformation of R,G,B - sensor data
Calibration uncertainty
∆L [ 2.5% ]
Uniformity
∆L [ 5.1% ]
Focus uncertainty
∆L [ 2.5% ]
Repeatability
∆L [ < 1.3% ]

Restrictions

  • Can not be used for measuring coloured light sources (i.e. LED)
  • Limited use for measuring modulated light source with a high depth of modulation

Result data

  • Luminance distributions in measuring images L(x,y)
  • Statistical data for being used in calculation programs (z.B. EXCEL®, MatLAB®, LabVIEW®)