L I TEPANELS | USER REVI EW
even with the power supply, so it really isn’t a problem. Connectors for comms and control are on the top. Litepanels’ control system for the Gemini range offers CCT mode, which produces tuneable white light, plus several adjustable colour modes and a selection of effects such as firelight, vehicle strobes and lightning. The controls are continuously rotating encoders with some programmed acceleration, so that one click means a 1% or 10% adjustment, depending on how fast the control is turned. In CCT mode, colour temperature (in 10K steps) and green-magenta bias are adjustable. As with almost all LEDs, the last few percentage points of intensity show visible steps, at least from the on-board controls. DMX was not tested. Light quality and accuracy was characterised by measuring a total of 63 data points. Seven colour temperature settings between 2700K and 10000K were each metered for colour temperature, TLCI and output ABOVE At a bit less than five and a half kilos, the 1 x 1 Gemini is not noticeably heavier than its competitors
at one metre, each at 5%, 50% and 100% intensity. QUALITY OF LIGHT White quality is excellent, with no TLCI measurement below a 92 encountered at minimum colour temperature and maximum output. TLCI generally increases with higher colour temperature, while the Gemini is slightly more powerful at medium colour temperature, with a peak of around 5700lx at 4200K. This is common for colour-mixing lights that blend various LEDs to achieve variable colour temperature; in the middle of the range, more of the LEDs will be active. These good numbers are maintained in HSI or RGBWmodes; wind the saturation down to zero, and the white quality remains as good as in CCT mode. Colour temperature accuracy is best at the lower end of the range. At 2700K selected, output measured 2828K – an error of about 19 mireds and roughly equivalent to a barely-visible one-eighth CT
“COLOUR TEMPERATURE ACCURACY IS BEST AT THE LOWER END OF THE RANGE”
RIGHT In the CCT mode, colour temperature is in 10K steps
MAY 20 1 9 | DEF I N I T ION 65
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