What is the use of telephoto lens?
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What is the use of telephoto lens?
The telephoto lens (usually with a focal length greater than 50mm) is an indispensable tool in photography, whose core function is to break through distance limitations and achieve unique visual effects through optical properties. The following are its main uses and characteristics:
1、 Core functions and application scenarios
Zoom in and zoom in on the subject being photographed
Suitable for capturing distant objects that cannot be approached, such as wildlife, sports events, or the moon. For example, a telephoto lens (over 300mm) can clearly magnify details of flying birds or the moon's surface.
Simplify the composition by cropping the cluttered background, highlight the subject, and make it suitable for beginners to quickly enhance the overall effect.
Space compression sensation
A telephoto lens can shorten the visual distance between distant and close shots in a picture, making the layers more compact. For example, when shooting scenery, mountains and foreground reefs can form a tight composition.
Background blurring (shallow depth of field)
Due to its long focal length and shallow depth of field, telephoto lens can greatly blur the background, highlighting close ups of portraits, flowers, or animals. For example, when shooting portraits, it is more natural to separate the character from the background.
2、 Typical application areas
Portrait photography: shooting from a distance to avoid tension and reduce perspective distortion, making facial proportions more natural.
Ecological and Sports Photography: Safely capturing wild animals (such as birds) or capturing sports dynamics, relying on the telephoto capability of ultra long focus lenses.
Landscape photography: Select local details (such as mountain peaks, textures, or clouds) to enhance the impact of the image.
Mobile photography: The portable telephoto function can compress the depth of field and capture close-up or creative perspectives.
3、 Precautions for use
Anti shake requirement: Slight shaking can easily cause blurring, and it needs to be paired with a tripod or activated with anti shake function.
Light control: telephoto lens are easily affected by light attenuation, and in low light environments, it is necessary to increase ISO or use large aperture lenses.
Precise focus: Shallow depth of field requires accurate focus, especially when capturing fast-moving subjects.
Summary: The telephoto lens expands the creative boundaries of photography through its optical properties. Both professional photographers and enthusiasts can use its zoom in, compression, and blurring effects to achieve more artistic visual expression.