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FieldSpec 4 Standard-Res Spectroradiometer

Portable field  spectroradiometer ideal for characterizing spectral features with a resolution of 10 nm to 50 nm;

  • Spectral resolution of 3 nm in the VNIR range (350 nm-1000 nm)
  • Spectral resolution of 10 nm in the SWIR range (1001 nm-2500 nm)

Product description

The go-to standard for trusted portable field spectroscopy

Ideal for characterizing spectral features with a resolution of 10 nm to 50 nm. The FieldSpec 4 Standard-Res is well positioned to meet a majority of the technical needs of field researchers who require dependable and trusted results from a field portable spectroradiometer.

It is  the right choice for a wide range of remote sensing applications, including multispectral sensor ground truthing and calibration, agricultural analysis, and snow and ice studies. In addition to being a world class spectroradiometer, the FieldSpec 4 Standard-Res is equally suited to serve as a rugged, portable spectrometer for accurate contact reflectance or non-solar stand-off measurements.

Technical Specifications

Spectral range350-2500 nm
Spectral Resolution3 nm @ 700 nm
10 nm @ 1400/2100 nm
Spectral sampling1.4 @ 350-1000 nm
(bandwidth) 1.1 nm @ 1001-2500 nm
Scanning time100 milliseconds
Stray light specificationVNIR 0.02%, SWIR 1 & 2 0.01%
Wavelength reproducibility 0.1 nm
Wavelength accuracy 0.5 nm
Maximum radianceVNIR 2X Solar, SWIR 10X Solar
DetectorsVNIR detector (350-1000 nm): 512 element silicon array.
SWIR 1detector (1001-1800 nm): Graded Index InGaAs Photodiode, Two Stage TE Cooled.
SWIR 1detector (1801-2500 nm): Graded Index InGaAs Photodiode, Two
Stage TE Cooled
Input1.5 m fiber optic (25° field of view). Optional narrower field of view fiber
optics available
Noise Equivalent VNIR 1.0 X10-9 W/cm2/nm/sr @ 700 nm
Radiancia (NEdL)SWIR 1 1.2 X10-9 W/cm2/nm/sr @ 1400 nm
SWIR 2 1.9 X10-9 W/cm2/nm/sr @ 2100 nm
Weight5.44 kg (12 lbs)
CalibrationsWavelength, absolute reflectance, radiance*, irradiance*.
All calibrations are NIST traceable. (*radiometric calibrations are optional)
ComputerWindows® 7 64-bit laptop (instrument controller)


For non-destructive contact measurements and characterization of mineral and ore samples.

Designed for analysis of raw materials requiring reflectance and absorbance measurements of minerals and some inorganic material applications requiring a higher intensity light.

  • Fore Optics:

Foreoptics control the field-of-view and maximize data collection to better meet specific application requirements. A wide selection of foreoptics lenses are available for use with the FieldSpec® 3 and FieldSpec® HandHeld 2 spectroradiometer systems.Ideal for analysis of grain, food, and other irregularly or non-homogeneous material samples.

  • Leaf Clip:

Use with ASD’s family of Contact Probes for non-destructive, one-handed functionality, and improved analysis of live vegetation and other thin heat sensitive targets

  • Reference Panel:

Reference panels are available in calibrated and non-calibrated diffuse white and gray, in varying sizes and reflectance levels, including encapsulated gray scale (NIST/NRC traceable) wavelength and USP standards for USP 1119.


  • Airborne Remote Sensing Measurements
  • Atmospheric Remote Sensing Research and Spectral Irradiance Studies
  • Climate Effects
  • Landscape Ecology and Ecology Research
  • Field Spectroscopy and Field Spectroradiometry Research
  • Remote Sensing and Geology
  • Ground Truthing
  • Spectral Remote Sensing for Hyperspectral and Multispectral Imagery Analysis
  • Remote Sensing of Water – Oceans, Coastal and Inland Water Bodies
  • Ice Characteristics Research and Snow Research
  • Spectroradiometry and Radiometric Calibration
  • Optics and Photonics Applications Using Vis/NIR Spectroradiometers
  • Crops and Soils Research for Soil Nutrients Analysis
  • Light Energy Measurement and Satellite Sensor and In-flight Calibration
  • Optical Radiation Measurement in Optics and Photonics
  • Sample Prescreening and Remote Sensing

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