Lenses (2)

Videography Introduction

  • Instructor: Dr. Khaled Gamal

Types of Lenses

  • Categories of Camera Lenses:

    1. Wide-angle Lenses

    2. Normal Lens

    3. Telephoto Lenses

  • Each category has unique optical characteristics and is available in both prime and zoom formats.

Wide Angle Lenses

  • Focal Length:

    • Typically below 35 mm.

  • Characteristics:

    • Wider angle of vision, ideal for landscape and architecture photography.

    • Great depth of field; nearly everything in view is sharp.

    • Exaggerates foreground objects; not suitable for portraits.

    • Objects close to the lens appear larger; distant objects appear smaller.

    • Can distort lines, resulting in a curvy appearance.

Examples

  • NIKON 24MM f/1.4G

    • Displays sample images showcasing lens capabilities.

Wide Angle Lenses Overview

  • Available in both prime and zoom types. Typical wide-angle zoom ranges include:

    • 16-35mm

    • 14-24mm

Sub-categories of Wide Angle Lenses

  1. Ultra Wide-Angle Lenses:

    • Focus lengths below 24 mm, offering wider and more distorted images than typical wide lenses.

  2. Fish-eye Lenses:

    • Ultra-wide lenses (often below 14mm) that intentionally distort images by creating curved lines.

Examples

  • SONY FE 12-24MM F/4 G

    • Sample images showcasing this lens type.

Normal (Standard) Lens

  • Focal Length Range:

    • Typically between 35 and 70 mm; standard prime focal length is 50 mm.

  • Characteristics:

    • Represents a perspective similar to human vision.

    • Versatile for street photography, portraits, and photojournalism.

    • Large maximum apertures allow for shallower depth of field.

    • Minimal perspective distortions.

  • Example:

    • Canon 50mm

Telephoto Lenses

  • Focal Length:

    • Ranges from 85mm to 300mm.

  • Characteristics:

    • Narrower angle of view; brings distant subjects closer.

    • Shallow depth of field, ideal for portraits.

    • Common in sports and wildlife photography.

    • Compresses distance between faraway subjects, creating a flatter, two-dimensional effect.

Super-Telephoto Lenses

  • Focal Length:

    • Greater than 300mm.

  • Characteristics:

    • Heavy and expensive, suitable for capturing distant subjects (e.g., the moon).

Macro Lens

  • Functionality:

    • Allow focusing at very short distances for close-up photography of small subjects (flowers, insects, jewelry).

Focal Length Summary

  • Defines the angle of view and magnification of the lens.

  • Examples:

    • 16mm: Wide field of view

    • 24mm: Moderate wide angle

    • 50mm: Standard view

    • 200mm: Narrow view, good for distant subjects.

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