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Meniscus Znse Lens supplier introduces how to buy lenses
Posted on:
2023-03-16
Meniscus Znse Lens supplier tells you the commonly used inspection methods when purchasing lenses.
The lens is represented by a lens symbol (two V-shaped signs at both ends of a line segment), the main optical axis is drawn, the optical center and the focal point are marked according to two refracted rays of the three special rays of the lens (generally used as the optical center) The characteristics of the image formed by the lens (such as virtual reality, size, upside down, etc.)
Here are some quick inspection methods commonly used by experts when purchasing lenses in photographic equipment stores:
1. At first glance, a good lens looks like looking at the bottom of clear water; deep and dark with no internal reflections. This is because the lens processing is fine. The absence of reflections is one of the most important indicators of a good lens, as stray reflections can detract from the quality of a photo.
2. Take a closer look. Set the focus as close as possible (if you have a zoom lens, zoom out to the maximum zoom stop), then tilt the lens slightly to reflect the light in the room. Count the colors you can see. If there are three colors, or less than three colors, it means that the manufacturer saves some costly and time-consuming multi-layer coating process, which is very necessary for high-quality light transmission and color balance.
Our company is a professional Meniscus Znse Lens supplier, please contact us if necessary.
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