Zeiss SFL 8x30 BinocularsThe Zeiss SFL 8x30 Binoculars take the "L" for Lightweight in their name even farther in that direction than the 40mm version. They weigh in at only 16. 2 ounces while delivering 90% of the light that enters to the user's eyes. Ergonomically, they incorporate the SF (SmartFocus) concept introduced in the Victory SFs which includes placing the focus wheel in front of the bridge and a focus speed that takes only 1. 4 turns (504) to travel between 4. 9'