Auto-Lumi is a portable exposure meter produced by Minolta. It has a pointer tracking system that allows for easy measurement of exposure.
The Sekonic L-158 Auto-Lumi is a compact reflected light exposure meter designed for easy carry-around use. It features a pointer-tracking system based on a guide mark to determine correct exposure settings for shutter speed and f-number. The device includes scales for ASA, f-number, shutter speed, and EV values.
| Measurement system | Reflected light system |
|---|---|
| Measurement range | EV7 to 17 (ASA 100) |
| Angle of incoming light | 65° |
| ASA range | 6 to 12000 |
| Shutter speed range | 8 to 1/2000 sec. |
| EV range | -2 to 19 |
| Dimensions | 81 x 52 x 24.5mm |
| Weight | 50g |
Rotate the ASA set knob and align the white mark on the black dial with the red scale unit in the ASA window.
Point the sensor at the subject, then rotate the dial ring until the pointer aligns with the center of the guide mark to read the shutter speed and f-number.
These numbers signify ASA values of 1600 and 3200, respectively.