Tokina BH-777 T4165020 User Manual

Product codes
T4165020
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Mechanisms
1. All metallic moving parts are coated with a special lubricant to
improve durability.
2. Tokina’s independently developed technology maintains the high
precision of mechanical fittings, accurately measured in microns.
3. Micron tolerances also give smooth operation and durability to
operating rollers and internal focus cams.
4. Brass is used in the lens mount to maintain high precision. Other
mechanisms are plated with hard chrome for optimum durability.
Exterior Finish
1. PRO models have a hardened Alumite (Armalite) finish to increase
durability and give a top-quality feel and finish.
2. Ergonomic designs emphasize control, grip and ease of operation with
textured rubber used on zoom and focus barrels. These are original
Tokina materials, designed to give many years of faithful service 
without deterioration.
Operation
1. Use of our special alloy Duralumin for metal parts provides excellent
durability, stabilizes torque and provides better handling. It also 
maintains smoother operation under all conditions.
2. Our special lubricant is used on moving parts, formulated to perform
even under extremes of temperature.
Lens Coatings
Resistance to flare and ghosting, plus faithful color reproduction are all
achieved by a unique coating technique – yet another reason for Tokina’s
reputation for incredibly sharp and clean images.
3
Flexible printed circuit board
SD (Super Low Dispersion) Glass
D I G I T A L S E R I E S
TokinaLensCatalog08  09.1.21  11:56 AM  Page 3