Bausch & Lomb DISCOVERER 78-1600 user manual

Summary of the content on the page No. 1

Lit. #: 91-0209/03-01
®
Discoverer
15-60x60 Zoom Spotting Scope
Power Control Ring Focus Control Ring
Eyepiece Lens
Objective Lens
Tripod Mount
Extendable Lens Shield
Model #78-1600
DISCOVERER SPECIFICATIONS
Power FOV At 1000 yds Exit Pupil
Power: 15x to 60x
15x 156’ 4.0mm
20x 1 1 7 ’ 3.0mm
Objective Lens: 60mm
25x 93’ 2.4mm
Eye Relief: 15mm
30x 77’ 2.0mm
Length: 17.5”
40x 58’ 1.5mm
50x 47’ 1.2mm Weight: 48 oz.
60x 40’ 1.0mm
Welcome to a world of adventure with your new Bausch &

Summary of the content on the page No. 2

CHANGING POWER 3 . After setting up, locate the subject through the camera’s To change magnification, rotate the Zoom Power Change viewfinder in the usual way with the spotting scope at it’s Ring to the desired power as indicated by the white lowest magnification. This gives the widest field of view. Once engraved scale. located, you can frame the picture as desired with the Zoom As you zoom from low power to high power under low light Power Change Ring in the same manner as when using it as con

Summary of the content on the page No. 3

Power Approximate Focal Length Approximate Approximate Or Telephoto Effect Effective f/Stop Shutter Speeds 15x 1000mm f/16 1/200 1/500 20x 1400mm f/22 1/125 1/200 25x 1700mm f/28 1/60 1/125 30x 2000mm f/32 1/60 1/125 40x 2700mm f/45 1/30 1/60 50x 3400mm f/56 1/15 1/30 60x 4000mm f/64 1/15 1/30 NOTE: Using any other f/stop other than f/16 may produce a dim image. CAMERAS REQUIRING EXTERNAL METERING DEVISES A C C E S S O R I E S Set the light meter’s ISO index to the rating of the film being Bus