Zeiss Binoculars- New SFL 40s

by Allen M. Hale • July 21, 2022

News & Announcements

New Arrival: Zeiss SFL Binoculars

  8 x 40: https://www.buteobooks.com/product/ZEISSSFL0840.html
10 x 40: https://www.buteobooks.com/product/ZEISSSFL1040.html

The new SFL 40s from Zeiss have arrived.

In late March of this year, Rich Moncrief from Zeiss provided us with an opportunity to try out examples of the new SFL (SmartFocus Lightweight) binoculars then in production. We were able to compare these new 40s with the Victory SF 42s and SF 32s. While both lighter and smaller, the optics of the SFL 40s compared very favorably with the top-end Victory SFs. Both the 8x40s and 10x 40s, at a list price of $1,799.99, cost about 35% less than the SFs. From now until Labor Day ( September 5, 2022) Buteo Books is pleased to offer a 15% discount on these superb new binoculars from Zeiss.


10 ×
Effective lens diameter
40 mm
Light transmission
Exit pupil diameter
4.0 mm
Twilight factor
Field of view at 1,000 m (yds)
115 m (345 ft)
Subjective viewing angle
62° Ww
Close focusing distance
1.5 m (4.9 ft)
Diopter adjustment range
− 4.0 | + 4.0 dpt
Exit pupil distance
18 mm
Pupil distance
52 – 74 mm
Lens type
Prism system

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