Approximately 1.2kg (KRS) to 2.3kg (standard assembly). Lens Mount: 2/3-inch Bayonet (B4). Manual & Operational Highlights
Essential for ensuring the lens remains parfocal (stays in focus throughout the zoom range).
According to operational guidelines, the lens features several user-centric designs: canon yj18x9b4 manual top
The lens body is finished with a specially developed protein paint designed to absorb moisture and provide a comfortable, fatigue-free grip for long shooting sessions.
The front end remains stationary during focusing, which reduces chromatic distortion and flare while allowing for consistent use of front-mounted filters. Approximately 1
For full technical documentation, users should refer to the Canon User Manual Library or Canon UK Support by searching for "YJ18x9B4" or the associated camera system. Canon YJ18x9B4 IRS-A SX12 1.8 B4 Lens Test - Vimeo
Immediately wipe off moisture from misty or foggy environments. For storage, it is recommended to seal the lens in a plastic bag with a desiccant to prevent mold. Canon YJ18x9B4 IRS-A SX12 1
The (IRS/KRS) is a professional 18x zoom lens designed for 2/3-inch B4 mount cameras, primarily used in SDTV news gathering and field productions. While officially categorized as a Standard Definition (SD) lens, it is highly regarded for its lightweight design (approx. 1.2kg to 2.3kg depending on the specific model and accessories) and sharp internal focus (IF) system. Core Specifications Focal Length: 9mm to 162mm. Zoom Ratio: 18x.
It supports digital servo zoom control and manual iris adjustment (typically ranging from f/1.4 to f/16 or closed).
f/1.8 (at 9-114mm), ramping to f/2.7 at 171mm (for similar YJ series models). Minimum Object Distance (M.O.D.): 0.6 meters.