1.Incident and Reflective Light Measurement:
   Incident Light Measurement: Measures the light falling onto the subject using a white dome (Lumisphere).
   Reflective Light Measurement: Measures the light reflected from the subject using a lens on the meter.

2.Spot Metering:
Many Sekonic models include a spot metering feature, allowing for precise measurement of light in a specific area of the scene, often using a 1-degree spot meter.

3. Ambient and Flash Light Measurement: 
Sekonic meters can measure both continuous ambient light and the output of flash units. They can synchronize with flash units to measure the flash exposure accurately.

4.Digital and Analog Display:
Some models offer both digital readouts and analog scales, providing photographers with both numerical data and a visual representation of exposure values.

5.Exposure Calculation:
Sekonic light meters can calculate exposure settings (aperture, shutter speed, ISO) based on the measured light, offering accurate exposure recommendations.

6.Advanced Modes:
Cine Mode: For filmmakers, some Sekonic meters include a cine mode to measure light in frames per second (fps) and shutter angles.
HD Cine Mode: Tailored for digital cinematography, providing settings for specific frame rates and lighting conditions.
Photo Mode: For still photography, including functions for ambient and flash lighting setups.

7.Flash Analyzing Function:
Some models feature flash analyzing, which evaluates the balance between ambient and flash light, helping photographers to fine-tune their lighting setups.

8.Memory and Averaging Functions:
Sekonic meters can store multiple readings in memory and average them, useful for complex lighting setups or varying light conditions.

9.Calibration and Custom Settings:
Users can calibrate their Sekonic meters to match their camera’s specific sensitivity, ensuring consistent results. Custom settings can also be saved for different shooting conditions.

10.Wireless Connectivity:
Higher-end models may offer wireless triggering and measurement capabilities, integrating with radio flash triggers for seamless off-camera flash measurement.