• Shenzhen ThreeNH Technology Co., Ltd.
    Eider Granada
    The product and the service was excelent. it came to colombia without many problems (just aduana problems)..supplier 100% recomenmed
  • Shenzhen ThreeNH Technology Co., Ltd.
    Josiah Hall
    Everything was delivered in perfect condition. After assembly, I confirmed operation. Thank you for this product.
  • Shenzhen ThreeNH Technology Co., Ltd.
    Mihai Paunescu
    Everything went as expected and the product arrived in good condition. 3NH is a good supplier and I will definitely use them in the future.
Contact Person : Melorae
Phone Number : 13925280965
Whatsapp : +8613925280965

Star Target Back Focus Test Chart SineImage Optical focus YE0220 For Camera Lenses

Place of Origin Shenzhen, China
Brand Name SineImage
Certification CE&RoHS&TUV&FCC&ISO9001
Model Number YE0220
Minimum Order Quantity 1pc
Price 200 usd
Packaging Details Standard Export Package
Delivery Time within 3-5 working days after payment confirmed
Payment Terms T/T,Paypal
Supply Ability 1000pcs/month

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Whatsapp:0086 18588475571

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Product Details
Brand SineImage Usage Transmission Characteristics Of 8K Camera
OEM Yes Light Source Can Be Equiped With Light Box
D 0.75 Transmission 18%
Model TE278
High Light

camera resolution chart

,

camera lens test chart

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Product Description

SineImage YE0220 Back Focus Test Chart for Camera Lenses

 

Model YE0220
Type Reflectance/Transparent
Format Custom Designs
Ratio 4:3
Material Film or HD photographic paper
 
The Sineimage YE0220 back focus test chart is designed for adjustment of camera lenses and checking back focal distance. It consists of a large Siemens star in the center an four smaller ones positioned in the corners of the test chart.
 
With the aid of a low transmission filter and by means of low level lighting make sure that the camera is not over modulated with the aperture in the open position.
 
a) Optical focus: Adjust focus at shortest focal length.
 
b) Back focal distance (lens): Adjust focus at shortest focal length by regulating lens mechanically with adjustment screw and optimize alternatively with a).
 
c) Back focal distance (pick-up tubes): If focus varies from channel to channel between greatest and shortest focal length, the individual pick-up tubes must be adjusted mechanically in the optical axis.
 
1. Select white channel. Set optical focus at greatest focal length. With shortest focal length and divergent f ocus adjust the pick-up tube in W-channel until optimum focus is achieved. If necessary optimize by alternating with optical focus adjustment.
 
2. With unchanged optical focus adjustment and shortest focal length adjust the red and blue pick-up tube until optimum focus is achieved. Image focus (focus adjustment) is maintained at all focal lengths (zoomin) and constant distance from object by means of back focal distance adjustment.
 

SineImage YE0220 Back Focus Test Chart for Camera Lenses

 

Remark: We support Any customized test charts only if you have high resolution image and size.

 

Frequently Asked Questions:

 

1. Are you a trader or a manufacturer?
Answer: We 3nh is a manufacturer, we research and develop, design and produce, market and sell color measuring instruments, gloss meters and camera test charts. Our company and factory are located in Shenzhen which is famous for manufacturing. Welcome to visit us!
2. What's your main market.
Answer: We sell to the global market.
3. How long is your delivery time?
Answer: Generally it is 3-7 working days after the payment confirmed.
4. What is your payment terms?
Answer: The payment term is 100% T/T in advance.
5. What's your minimum order quantity (MOQ)?
Answer: Our MOQ is 1 set. If you order more than 3 sets, we can provide discount.

 

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