Sekonic Studio Deluxe III L-398A

Manufacturer's description:

• Instant reading of full range of aperture/shutter combinations
• Amorphous photosensor eliminates need for batteries
• Swivel Head to position incident dome and maintain full view of display
• Continuous reading plus needle lock for easy and accurate readings
• Lumidisc for adjusting illumination contrast and measuring illumination intensity
• Lumigrid for measuring reflected light (30 degrees light receiving angle)
• Memory pointer retains prior reading