Traditional Culture Encyclopedia - Photography major - Iphone has the difference between telephoto and telephoto-free.
Iphone has the difference between telephoto and telephoto-free.
A long focal length lens refers to a photographic lens whose focal length is longer than that of a standard lens. Telefocal lenses are divided into ordinary telephoto lenses and ultra-telephoto lenses. The focal length of ordinary telephoto lens is close to that of standard lens, while the focal length of ultra telephoto lens is much larger than that of standard lens. Take 135 camera as an example, the photographic lens with a focal length of 85 mm -300 mm is a normal telephoto lens, and the lens with a focal length of more than 300 mm is a super telephoto lens.
Shooting with a long focal length lens has the following characteristics:
Small angle of view
Therefore, the spatial range of the shooting scene is also small, and the shot image is larger than the standard lens at the same shooting distance, which is suitable for shooting the details of the distant scene and shooting the subjects that are not easy to get close to.
Short depth of field
So you can highlight the subject in a messy environment. However, it brings some difficulties to accurate focus adjustment. If the focus is slightly inaccurate when shooting, the subject will be blurred.
Poor perspective effect
This kind of lens has obvious characteristics of compressing space depth and exaggerating background. When using a long focal length lens, it is usually used to shoot distant scenes. Due to the absorption of air and the influence of diffuse light, the contrast of the captured image is small, and the dust particle extinction is serious, so it is not easy to achieve very accurate focusing.
When shooting with a telephoto lens over 300mm, it is difficult to focus all colors of light on one point, resulting in sub-spectral problems. Based on the above situation, sometimes the image quality of the shot works is not high.
- Previous article:Novice photographer, let me ask you a question.
- Next article:If you are in debt now, do you have a life plan for yourself?
- Related articles
- How to match the copywriting of "Will you still love me tomorrow"
- When will the Fan Bingbing version of The Legend of Wu Mei Niang be broadcast and how many episodes will it be updated?
- Brief introduction of He Jiong, the host of Hunan Satellite TV?
- What should I pay attention to when traveling to Sanya? What preparations should I make to travel to Sanya?
- How to draw a stick figure couple?
- What is zoning risk?
- What about Nantong Bai Shirui photoelectric instrument co., ltd?
- What's delicious in nanjing xinjiekou?
- What's the difference between guest films and sample films?
- Why don't all the beautiful women in life have partners?