Canon 18x50 IS All Weather Specifications

OPTICAL CHARACTERISTICS

Binocular type

Prism

Magnification

18x

Objective lens effective diameter

50mm

Filter Size

58mm

Real Field of View

3.7°

Apparent Field of View

60.3°¹

Field of View at 1000m

65m

OPTICAL CONSTRUCTION

Objective lens construction

4 elements in 3 groups

Eyepiece lens construction

7 elements in 5 groups

UD lens

1 UD lens

Doublet Field Flattener

Yes

Exit Pupil diameter

2.8mm

Eye relief

15mm

Prism type

Porro II prism

Lens coating

Super Spectra coating

FOCUSING AND DIOPTRIC CORRECTION

Focusing system

Object lens movement

Focusing method

Manual focus

Dioptric correction method

Dioptric correction ring

Dioptric correction range

+/- 3.0m-1 (dioptre)

Closest focusing distance

6m

IMAGE STABILIZER

Image Stabilizer system

Vari-Angle Prism

Correction angle

+/- 0.7°

Shake detection system

2 Gyro sensors

Image Stabilizer activation

Push button switch

Power source

2 x AA size batteries

Battery life

+25°C: approx 2.5 hours
-10°C: approx 10 minutes (using alkaline batteries)¹

Battery level indicator

Yes (LED)

PHYSICAL SPECIFICATIONS

Water Resistance

JIS level 4

Rubber coating

Yes

Operating conditions

-10°C to 45°C, 90% humidity

Width

152mm

Height

193mm

Depth

81mm

Weight (Excluding battery)

1180g

Footnote

¹ Apparent field of view based on the ISO 14132-1:2002 standard

¹ Based on Canon testing standards