3 in 1 Pocket Size 18% Grey Card Board White Balance Card Black with Neck Strap for Digital Photography Photometric

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Product Overview

Description



Product Description


Product Name
3 in 1 Pocket-Size 18% Grey Card Board White Balance Card Black with Neck Strap for Digital Photography Photometric
Type
Others
Material
PUC
Color
Black, White, Grey
Weight
34g
Warranty
1 year
Payment
L/C, T/T, D/A, D/P, West Union, Money Gram
Packaging
PE bag or customized packaging


Specifications:
We know that if an object is absolutely black, its reflectivity is 0. If it is absolutely white, its reflectivity is 100%.
Virtually all objects are between these two extremes. If a gray tone reflects 18% of the light, it is 18% gray. If you mix the
light, dark, and midtones of all objects in nature, it comes18% of the ash.


  • Product performance description


Therefore, the design of the photometric system in the camera is to reproduce this 18% gray brightness. Regardless of whether you meter the metering system to an object of any hue, it always "thinks" that the subject is in a medium gray tone and provides
exposure data for the gray tones in the reproduction. That is to say, you measure the camera against the white snow, and the
exposure data is to restore the white snow to gray, to measure the light against the black object, and the exposure data obtained
is also to restore the object to gray. At this time, exposure compensation is required.
If the metering object happens to be a mid-gray tone with an 18% reflectance, including a mid-gray tone of 18% for all scenes in the metering range, the recommended exposure combination for the metering reading will produce an accurate exposure. That is, it can maximize the brightness level of the scene. However, most of the subjects are unlikely to have an 18% reflectivity. At this time, the 18% gray plate can be placed under the same illumination conditions as the subject, and then the photometric system in the camera is used to align the gray plate. Metering gives accurate exposure data.
Determine exposure values, determine light ratios, determine color balance and density, determine macro and reticle exposure, and
set white balance for digital cameras and cameras.
The 18% gray card is professional color correction, which is a necessity for people with strict exposure requirements. It works
better with the light meter. It is an ideal accessory for portraits, flowers, remake and other photography.





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Company Profile




About Us:

HANGZHOU SUPERB I/E Co.,Ltd., founded in 2003, is dedicated to become a reliable one-stop company which supply quality, innovative and fashionable camera & photography accessories at affordable prices both online and offline.
We have our own factories and R&D dept.
We provide not only full range of camera accessory products but also OEM/ODM service.
We are here looking forward to cooperating with your esteemed company in the nearest future!


FAQ


Q1:. How to order?
A1: Most of prices in our Alibaba store are accurate, you can place order directly. If your quantity is big enough or any special requirements on products, please send your inquiry through message or email, we will quote new prices. If the quotation accepted, we will make Performa Invoice or Trade Assurance contract (alibaba’s template) for your final confirmation, when payment released,we will arrange the shipment at our earliest.

Q2. Can I get free samples?
A2: Of course, the samples whose unit price is below USD15 are free for customer, but you need to pay for the express courier fee.

Q3. How do you ship the goods to us?
A3: We can arrange the shipment by sea, by air, by express courier or by airmail, depending on your order volume or timelines. For
small order, express courier will be faster but it is relatively costly, post airmail is cheaper but will take at least 2 weeks.

Q4. Can you offer OEM/printing logo on samples?
A4: Yes, we can offer OEM/printing logo on samples, but the quantity should meet our MOQ,

Q5: What kind of payment terms can you accept?
A5: We prefer payment through Alibaba, which has Trade Assurance backed by alibaba. If not through Alibaba, we accept T/T, L/C,Paypal , Western Union , Escrow, etc, which could be negotiable.

Q6. What is the Warranty for your products?
A6: One year warranty for all products. If any quality problems on our side occurred during this period, we will take back and make the replacement. The shipping cost is on our account.



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