The Sekonic L-228 Zoom Meter is an analog light meter that measures reflected ambient light. It features a variable zoom optical viewfinder, allowing you to narrow the angle of acceptance to take more selective readings of specific elements within your scene.

The meter utilizes a CdS cell and an analog match-needle display to provide exposure readings. A physical calculator dial on the unit is used to translate the needle reading into corresponding shutter speed, aperture, and ISO combinations. The unit originally operated on a 1.35V mercury battery, requiring a modern voltage equivalent or adapter for accurate use today.