Seiko lens is the most professional lens used in security monitoring field. Now it has been sold in domestic market for many years. AVENIR Seiko focuses on creating a famous monitoring lens brand in the security industry. It devotes more than two decades to the research and development and production of surveillance lenses. At the end of the 1990s. Created the "0358 phenomenon" known to the industry.
True and false Seiko lens recognition method
Spiral groove
True Seiko: First rotate the front group to FAR, observe the inside of the front barrel, and see three spiral grooves
Imitation Seiko: First rotate the front group to FAR, observe the inside of the front barrel, and only see one spiral groove
2. Screw interface
True Seiko: Press down forcefully to rotate around 330 degrees around. The appearance is glossy and imitation Seiko: Non-rotating, rough appearance 3. Lens
Seiko: Glass lenses, the color of the first lens, are yellow, red, and violet at different angles. The color is darker, and there is no visible reflection of the human figure and objects.
Imitation Seiko: plastic lenses, the first lens color, under different angles: pink, light blue, lighter colors, can see the obvious shadows and objects of the reflective
4. Front lens
True Seiko: Uniform Black
Imitation Seiko: There are more white and white circles
5. Shell
True Seiko: No box at the body tag
Imitation Seiko: There is a box on the body label
6. Imaging
True Seiko: The edge of the image outline on the monitor is clear and the image is translucent
Imitation Seiko: The edge of the image outline is trailing, the image is whitish, the center is clearly blurred or the surrounding clear center is blurred
7. Tune
True Seiko: Use 1 long lever, 1 short lever
Imitation Seiko: Use two length-like levers
8. Front and back covers
Seiko: The front cover has "36" digits and the back cover is marked with "25.5" digits
Imitation Seiko: No number is marked
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