SPECTRAL EVOLUTION is a leading manufacturer of field portable and laboratory spectroradiometers and spectrometers for remote sensing applications including geological remote sensing, ground truthing, spectral remote sensing, environmental and climate research, crop and soil research, vegetative studies, water body research, forestry and canopy studies, radiometric calibration transfer, upwelling and downwelling measurement and more. The SR-6500 for remote sensing delivers the highest resolution and sensitivity available in a lightweight, rugged and reliable field spectroradiometer. Our DARWin SP Data Acquisition software makes using our instruments fast and easy and provides pull-down menu access to 19 vegetation indices.