What does VR mean on the lens

What does VR mean on the lens VR (Vibration Reduction) Camera Image Stabilization is an optical technology that improves image blur caused by camera shake and enables quick shooting when the shutter speed is reduced by three stops, allowing the use of a telephoto lens to take sharp pictures. When the photographer shoots a moving object, the system will automatically detect the movement of the camera. The VR operation can only be performed on newer Nikon cameras. Today, Nikon VR Image Stabilization System and Canon IS Image Stabilization System are considered by many consumers as the world’s first and most influential optical image stabilization systems. Not only has it been used in professional SLR lenses in large numbers, but it can often be seen in consumer digital cameras. This also lays the foundation for Nikon's VR anti-shake system in the field of optical image stabilization.

Nikon VR anti-shake principle and Canon's IS anti-shake system is basically the same, are the use of the floating lens in the lens to correct the "optical axis offset", from the detection part, compensation for the vibrating lens group and the drive control part, etc., in the lens The electronic damping system detects slight vibration of the lens and corrects the position of the lens inside the lens in real time, effectively reducing the impact of external vibration on the final camera imaging. Nikon VR anti-shake system can reduce the safety shutter by 3 steps.

The safety shutter of the camera is based on the reciprocal of the focal length of the lens. For example, when the focal length is 50mm, the safety shutter is 1/50s. If the shutter speed is lower than this, it is theoretically easier to produce jitter. From this we can understand that the longer the focal length, the shorter the safety shutter. If the focal length of a telephoto lens reaches 300mm, its safety shutter is 1/300s. If the lighting conditions are not ideal when shooting, then it is very Difficult to reach the safety shutter, hand-held shooting jitter is difficult to avoid. VR vibration reduction technology can reduce the 2-3 speed shutter speed, so it is more conducive to taking clear pictures without the use of tripods and other equipment when the lighting conditions are not ideal. Therefore, compared to professional high-end SLR lenses, the popularity of VR anti-shake technology in home digital cameras is imperative. Especially in telephoto digital cameras, the anti-shake function becomes more important.

Anti-shake generation (VR) and second generation (VR II), generation can reduce the three-level shutter, such as the use of 50mm lens, no VR to have 1/60 to clear, open VR generation, drop three shutter, is 1 / 15 seconds to make it clear, the second generation down four shutter, cheaper lens only VR switch, a better lens mode selection, a normal mode, a chase mode, suitable for shooting animals, cars and so on.

low voltage electric appliances is a kind of equipment that can manually or automatically connect and disconnect the circuit,according to the requirements of the outside . In order to realize the circuit or non-electric object switching, control, protection, detection, transformation and adjustment. Korlen electrical appliances can provide the perfect(quality and service) products with good safety: AC Contactor,Thermal Relay,Manual Motor Startor etc.


AC contactor:

pe

KNC1-09

KNC1-12

KNC1-18

KNC1-25

KNC1-32

KNC1-40

KNC1-50

KNC1-65

KNC1-80

KNC1-95

Pick-up voltage
50/60Hz(V)

(0.85~
1.1)Us

(0.85~
1.1) Us

(0.85~
1.1)Us

(0.85~
1.1)Us

(0.85~
1.1)Us

(0.85~
1.1)Us

(0.85~
1.1)Us

(0.85
~1.1)Us

(0.85~
1.1)Us

(0.85~
1.1)Us

Release voltage
50/60Hz(v)

(0.2~
0.75)Us

(0.2~
0.75)Us

(0.2~
0.75)Us

(0.2~
0.75)Us

(0.2~
0.75)Us

(0.2~
0.75)Us

(0.2~
0.75)Us

(0.2~
0.75)Us

(0.2~
0.75)Us

(0.2~
0.75)Us

Coil power

50Hz

60Hz
 

Pick-up(VA)

70

70

110

110

110

200

200

200

200

200

Holding(VA)

8

8

11

11

11

20

20

20

20

20

Pick-up(VA)

80

80

115

115

115

200

200

200

200

200

Holding(VA)

8

8

11

11

11

20

20

20

20

20

Power
consumption
(W)

1.8~2.7

1.8~2.7

3~4

3~4

3~4

6~10

6~10

6~10

6~10

6~


Low Voltage Transformer


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Low Voltage Transformer

Low Voltage Transformer,Low Voltage Motors,Relay & Contactor

Wenzhou Korlen Electric Appliances Co., Ltd. , http://www.korlenelectric.com