Type TRD 2
Enables easy and fast tests in all photographic processes.
Measurement of logarithmic density for B&W films and papers.
A button is used to select the transmission or reflection mode..
While pressing down the reading arm, the according light source and the display are switched on.
While inserting the film or paper and holding the reading arm down, a press of another button resets the display to 0.00. For both modes an individual reference point is set. The measurement is done about 3 times in a second, ensuring a continuous reading of even high densities. Thus easing the detection of special areas as the lightest or darkest point
The TRD 2 devices could be adapted to a lot of needs.
Option 02 Exchangeable apertures
Option 03 USB port
Option 05 Measurement range is extended to 5.5 logD
Option 06 Extended display resolution (0.001 logD)
Option 07 Measurement range is extended to 6.5 logD
Option 08 Multicolour LED creates red, blue, green or white transmission light