A long focal length lens is a photographic lens that is longer than the focal length of a standard lens. Long focal length lens can be divided into ordinary telephoto lens and super telephoto lens. The focal length of ordinary telephoto lens is close to that of standard lens, while that of super telephoto lens is much larger than that of standard lens. Taking 135 camera as an example, the camera lens with a lens focal length of 85 mm - 300 mm is an ordinary telephoto lens, and those above 300 mm are ultra telephoto lenses. Tesoo, being a professional company of lens, is specialized in lens manufacturing and able to provide qualified products as well as perfect services for customers. If you want to see more long focal length lens such as panorama optical lens 25mm, our websites have many related documents and you can download them. If you want to buy long focal length lens, please contact us.
The sensor size of 8mm lens is 1/2.7'' and 1/3''. TTL: 7.49/22.89mm. EFL: 8.0mm. F.NO: 2.0/2.6. MBFL: 1.74/7.12mm.
The sensor size of 10mm camera lens is 1/2'' to 1/3''. TTL: 15.02-22.5mm. EFL: 10-16mm. F.NO: 2.0/4.0/4.8/6.0. MBFL: 2.89-6.30mm.
The sensor size of 10.5mm lens is 1/2'' and 1/2.5''. TTL: 15.02mm. EFL: 10.50mm. F.NO: 4. MBFL: 5.06mm.
The sensor size of 12mm camera lens is 1/1.7'' to 1/3''. TTL: 15.02-50.4mm. EFL: 8-16mm. F.NO: 1.0/2.0/4.0/4.8/6.0. MBFL: 2.89-7.78mm.
The sensor size of 16mm camera lens is 1/2'' to 1/3''. TTL: 15.02-22.5mm. EFL: 10-16mm. F.NO: 2.0/4.0/4.8/6.0. MBFL: 2.89-6.30mm.
The sensor size of 25mm camera lens is 1/1.1" to 1/2.3''. TTL: 95.45-110.55mm. EFL: 8-70mm. F.NO: 1.4-16.
The sensor size of the 35mm camera lens is 1.1",1" to 2/3". TTL: 95.45-110.55mm. EFL: 8-70mm. F.NO: 1.2-16.
A long focal length lens is a photographic lens that is longer than the focal length of a standard lens. The long focal length lens such as a 12mm camera lens can capture a detail of a distant scene and become a close-up lens, resulting in the screen effect that the distant scene is moved closer. In science and education films, the use of telephoto lens can absorb wild animals in a hidden distance to avoid animals being disturbed, so as to make the picture look natural and true.
The focal length of the lens is a very important index of the lens. The length of the lens focal length determines the size of the subject imaging on the imaging medium (film or CCD, etc.), that is, the scale equivalent to the object and image. When shooting the same subject at the same distance, the image formed by the long focal length of the lens is large, and the image formed by the short focal length of the lens is small. The focal length of the camera lens varies greatly depending on the purpose. The 16mm camera lens is a popular kind among these lenses.
The focal length of wide-angle lens is between 28-45mm, and that of ultra wide-angle lens is more than 24mm or shorter. The feature of wide-angle lens is to push the scene to the distance, near, far and small, with the advantages of deep scene and wide shooting range.
The focal length of the middle focus lens is between 50-135mm. It is characterized by easy to make a large aperture, which is suitable for taking portraits and scenery.
The focal length of long focal length lens is more than 200mm, which can be divided into long focal length and ultra long focal length. The focal length of long focal length lens is within 200-300mm, and that of ultra long focal length lens is more than 400mm. Long focal length lens are the favorite of sports, entertainment and other journalists. It can easily capture the target from a long distance. It is the best choice for shooting wild animals such as birds.
The imaging of long focal length lens has the characteristics of obviously compressing the space depth distance and exaggerating the background. Long focal length lens are generally used to shoot distant scenes. Due to the absorption of air and the influence of diffuse scattered light, it is not easy to achieve very accurate focusing because of the small contrast of the captured image and the serious extinction of dust particles.
The picture taken by the long focal length lens has the visual effect of drawing the distant object closer, just as people observe the distant object with a telescope in life. Due to the modeling characteristics of long focal length lens, small objects 10 meters away seem to be in front of you. It is difficult to accurately judge the actual distance between the scene and the camera when watching the picture taken by this lens.