The TTArtisan Light Meter II is an ultra-compact, cold-shoe mountable light meter designed for analog film cameras. With its sleek retro profile, it offers simple operation via two easily accessible dials and supports shutter speed readings from 1 to 1/2000 seconds, ISO from 25 to 6400, and apertures from f/1 to f/22, all in half-stop increments. Feature: Indicator Light + Two Dials The current exposure status is displayed by the indicator light. The left and right dials can change the parameters, similar to the camera's manual mode. 23-Step Shutter Speed The shutter speed increased from 12 to 23 steps, making the exposure more accurate. Clicked Aperture Dials Upgrade to a clickable dial that can effectively prevent accidental touches. 45° Averaging Metering Upgrade the metering module to make the measurement more accurate. Dual Energy-Saving Continuous Measurement for 60 Hours Activate the light meter: No operation for 10 seconds: The indicator light turns off automatically and it can be activated by pressing the dial and measurement button. No operation for 60 seconds: The light meter activates sleep mode, which can be activated by clicking the measurement button. Cold Shoe Mount The installation position can be adjusted freely; there are three choices, see the picture for details. Specification: Meter Type: Ambient Spot Metering: No Flash Metering: No Light Reading Method: Reflected Light Readings: None Metering Modes: Averaging Aperture Range: f/1 to 22 (1/2-stop increments) ISO Range: 25 to 6400 Shutter Speed Range: 2000 to 1 second Display: None System Connection: None Media Card Reader: None Tripod Mount Thread: None Package Included: 1 x TTArtisan Light Meter II