Sea Tidbits: objective lens diameter (front) lens frame the inside diameter (mm) of the effective aperture. Larger diameter of the objective lens, an image having a high resolving power and the brighter the image. However, the large objective lens diameter will cause an increase in the weight of binoculars Celestron telescope stores, so the general operation of the maximum should not exceed 50mm. Taiyuan sea breeze Electronics Co., Ltd. The company was established in 2002, specializes in wholesale sales telescopes, binoculars, outdoor equipment. Company in good faith Celestron telescope how, customer-oriented purpose grow Shanxi telescope first brands thirteen years. Taiyuan sea breeze Analysis: Some people will feel binoculars large diameter coating quality even worse it does not matter Celestron telescope, its diameter can compensate for the loss of light. In actual fact, binoculars interior mirror each surface reflected light will form stray light, reducing scene contrast, make like blurred shadows of objects when viewed in daylight, this phenomenon is particularly evident. Disappeared in the blinding brilliance in goal in the poor coating quality binoculars with a coating of good quality binoculars is very easy to see. How Celestron telescope-like, sea Electronics (certified), Gujiao Celestron telescope provided by the sea breeze Electronics Co., Ltd., Taiyuan. Taiyuan sea breeze Electronics Co., Ltd. (www.tyhfdq.com) is Taiyuan, binoculars leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. E-leadership in the sea breeze with the staff warmly welcome all inquiries negotiations to create a better future for electronic sea.