Here are the Specs for the eyepiece.
Magnification: 25~60 ZOOM
Real field of view: 2.4~1.32
Exit pupil: 3.5~1.5mm (TSN-880)
3.1~1.3mm(TSN-770)
Relative Brightness: 12.4~2.2 (TSN-880)
9.5~1.6 (TSN-770)
Eye Relief: 17.0mm
Field of view at 1,000m/yds 42~23m/yds
Length: 111.mm (4.37in)
Weight: 370g (13.0oz)
Being out in the field with this wonderful eyepiece has been an incredible Digiscoping experience.
The Primary Camera I have been using is the Sony RX-100 with the 25/60.
The first day of my outing I had a chance on some Ruby Crowned Kinglets with a Low shutter Speed due to the overcast conditions .
The next outing I tested the TSN-TE-11WZ on some Belted Kingfishers at a bit of a distance about 60 feet ,,so I utilized the Zoom to about 40x in which I still kept the detail and Sharpness which really was impressive,
Here are some various captures with the Kowa TSN-TE-11WZ ,,,Song Sparrows ,,American Robin,, Red Tailed Hawk,,,The Song Sparrow Portrait close up was at 40xpower.
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