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北京东方恒视科技有限公司

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北京东方恒视科技有限公司是一家多年从事广电摄录设备、专业的多媒体视频后期及周边配件的公司。公司自成立以来，一直奉行“以人为本、以技术为中心、以用户需求为导向、以服务为根本”的方针，积极的为广大用户提供了更多技术创新和更高实用价值的各类方案。目前是我国北方地区最大的广播器材销售商之一，2005年获得松......

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佳能镜头YJ20x8.5B

产品编号：2389853 更新时间：2020-08-14

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北京东方恒视科技有限公司

主营业务：非编工作站，录像机，摄像机，硬盘播出系统，字幕机，磁盘阵列，...
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Hyper Standard Pro-Video Lens

YJ20x8.5B IRS

YJ20x8.5B KRS

Canon is proud to introduce the YJ20x8.5B, which has emerged from Canon's top selling YJ19x9B, also known as the Pro-Video Industry Standard Lens.
The YJ20x8.5B tops many Pro-Video standard lenses by offering the widest focal length (8.5mm), the highest zoom ratio (20x), and the fastest zoom speed (1.2 sec from wide end to tele end). In addition to h***ing Canon's innovative Internal Focus (IF) Technology and exclusive Shuttle Shot Function, its new ergonomically designed drive unit accounts for its ideal balance and comfort.

IF Technology

Pro-Video camera people can take advantage of Canon's breakthrough technology that broadcasters h***e enjoyed for years-Internal Focus (IF).
Internal Focus technology was pioneered by Canon and first introduced into their Broadcast ENG lenses.
It has since become the industry-standard. Internal Focus is a system where the front end of the lens remains stationary and does not rotate. Only internal elements move when focusing.

Internal Focus enhances optical performance and provides several user benefits:

-	IF improves chromatic aberrati***, thus increasing resolution.
-	IF is not sensitive to change in object distances.
-	IF decreases flare by use of square food.
-	IF enables a higher level of creative filter work.
-	Even he***y optical accessories attached at the end of the Lens does not affect the focusing operation.

New Ergonomic Drive Unit

The new ergonomically designed Drive Unit achieves an ideal balance and comfort by h***ing it tilt to an angle. In addition, the size of the unit has been minimized to comfortably fit in the palm of the hand. Overall, it improves the feeling of unity between the user and the lens.

Shuttle Shot Switch

The Shuttle Shot function ON/OFF switch can also be allocated to either the VTR or RET switches by means of a DIP switch.

Ribbed Surface

The ribbed surface on the bottom of the Drive Unit provides better handling control.

Grip Support

Allows a user to securely grip the Drive Unit without pressing on the VTR or Shuttle Shot butt***.

Lens Model Number		YJ20x8.5B IRS
Zoom Ratio		20x
Built-in Extender		2.0x
Range of Focal Length (with Extender)		8.5~170mm 17~340mm
Maximum Relative Aperture (with extender)		1:1.8 at 8.5~113.3mm 1:2.7 at 170mm 1:3.6 at 17~226.7mm (2.0x) 1:5.4 at 340mm (2.0x)
Angular field of view (with Extender)	4:3 Aspect Ratio (8.8 x 6.6mm)	54.7° x 42.4° at 8.5mm 3.0° x 2.2° at 170mm 29.0° x 22.0° at 17mm (2.0x) 1.5° x 1.1° at 340mm (2.0x)
Minimum Object Distance (M.O.D.)		0.9m (10mm with Macro)
Object Dimensi*** at M.O.D. (with Extender)	4:3 Aspect Ratio (8.8 x 6.6mm)	85.2 x 63.9cm at 8.5mm 4.4 x 3.3cm at 170mm 42.6 x 32.0cm at 17.0mm (2.0x) 2.2 x 1.7cm at 340mm (2.0x)
ze (W x H x L)		163.3 x 103.0 x 195.4mm
Approx.Mass		1.39kg (3.06lbs)
Macro		Yes
		Yes

Lens Model Number		YJ20x8.5B KRS
Zoom Ratio		20x
Built-in Extender		-
Range of Focal Length (with Extender)		8.5~170mm
Maximum Relative Aperture (with extender)		1:1.8 at 8.5~113.3mm 1:2.7 at 170mm
Angular field of view (with Extender)	4:3 Aspect Ratio (8.8 x 6.6mm)	54.7° x 42.4° at 8.5mm 3.0° x 2.2° at 170mm
Minimum Object Distance (M.O.D.)		0.9m (10mm with Macro)
Object Dimensi*** at M.O.D. (with Extender)	4:3 Aspect Ratio (8.8 x 6.6mm)	85.2 x 63.9cm at 8.5mm 4.4 x 3.3cm at 170mm
ze (W x H x L)		163.3 x 103 x 170.4mm
Approx.Mass		1.17kg (2.58lbs)
Macro		Yes
		Yes