LEICA SUMMICRON-C SET : 18-25-35-50-75-100mm

Leica Summicron-C Set :
Leica Summicron-C 18mm T2.0
Leica Summicron-C 25mm T2.0
Leica Summicron-C 35mm T2.0
Leica Summicron-C 50mm T2.0
Leica Summicron-C 75mm T2.0
Leica Summicron-C 100mm T2.0

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The Leica Summicron-C lenses are a series of compact, high-quality prime lenses designed for cinematography. These lenses offer excellent optical performance and are known for their precise construction and compact design. The series includes the following focal lengths: 18mm, 25mm, 35mm, 50mm, 75mm, and 100mm.

1. Optical Design and Construction

• Lens Mount: PL Mount (positive lock), with options for other mounts (e.g., EF or LPL) available via adapters.
• Optical Formula: The lenses use advanced optical designs to minimize chromatic aberrations, distortion, and other optical defects, offering superior clarity and color accuracy.
• Aperture Blades: 12-blade aperture for smooth, rounded bokeh.
• Focus Mechanism: Precise, consistent focus mechanism with smooth operation, designed for follow-focus systems.
• Minimum Focus Distance: Each lens has a different minimum focus distance, usually ranging from 0.3 meters (for the 18mm) to 0.85 meters (for the 100mm).
• Weight: Approximately 1.4–1.8 kg (3–4 lbs) per lens, depending on the focal length.

2. Focal Lengths and Aperture

• 18mm: Maximum aperture f/2.0
• 25mm: Maximum aperture f/2.0
• 35mm: Maximum aperture f/2.0
• 50mm: Maximum aperture f/2.0
• 75mm: Maximum aperture f/2.0
• 100mm: Maximum aperture f/2.0

All lenses in the Summicron-C series have a maximum aperture of f/2.0, which is considered fast for cinematographic lenses, allowing for more control over depth of field and low-light performance.

3. Image Quality and Performance

• Color Rendition: Known for its true-to-life color rendition, which is neutral and balanced, with a slight warmth. This is ideal for filmmakers who require high-quality, accurate color reproduction.
• Sharpness: Extremely sharp across the frame, even at wide apertures, with minimal optical distortions.
• Contrast and Resolution: High contrast and excellent resolution, providing detailed, crisp images.

4. Focus and Aperture

• Focus Scale: The lenses feature both feet and meters focus markings on the focus ring, providing versatility for both US and international cinematographers.
• Focus Throw: The focus throw is long (about 300 degrees of rotation), providing very precise manual focusing, which is ideal for cinematic applications.
• Aperture Control: The aperture ring is clickless, enabling smooth adjustments for iris control, which is crucial in video production.

5. Other Features

• Front Diameter: 95mm, which is standard across all lenses in the Summicron-C series, allowing for compatibility with common filter sizes and matte boxes.
• Filter Thread: The filter thread size for all lenses is 95mm.
• Compact and Lightweight Design: The design focuses on compactness without sacrificing optical performance, which is especially useful for handheld filming or gimbal work.

6. Usage

• Primarily designed for cinematography and motion picture production, these lenses excel in both studio and on-location shoots, offering a high degree of reliability and quality.
• Suitable for documentary filmmaking, narrative features, commercials, and other professional film and video applications.
• Cinematic Look: The Summicron-C lenses are designed to offer a distinct, cinematic look with a beautiful bokeh and sharp subject isolation.

Conclusion

The Leica Summicron-C series lenses are some of the most highly regarded lenses in the cinematography world due to their optical quality, build, and performance in high-end productions. Each lens in the series has been specifically designed to meet the needs of filmmakers, offering outstanding image quality, durability, and ease of use for both focus-pulling and lens changes.