Large Diameter Plano Convex Lenses for Photographic Lighting and Soft Focus Effects

Custom Large Diameter Plano Convex Lenses for Photographic Lighting and Soft Focus Effects

Material & Core Properties:
These lenses are crafted from high-optical-quality glass, typically BK7 or optical crown glass, ensuring superior clarity and minimal distortion. Key properties include:

• Large Aperture Design: Diameters ranging from 80mm to over 150mm to capture and control broad light beams from studio strobes, LEDs, or Fresnel fixtures.

• Precision-Ground Surfaces: The convex spherical surface is accurately figured to provide controlled light convergence, while the plano (flat) surface ensures easy integration into filter holders or optical mounts.

• High Transmission & Anti-Reflective Coating: Available with multi-layer broadband AR coatings (e.g., MgF2) to maximize light throughput across the visible spectrum (400-700nm) and minimize internal flare and ghosting.

• Robust Construction: Housed in durable, black-anodized aluminum or brass retaining rings to withstand professional set environments.

Primary Function:
The plano-convex (PCX) optical design acts as a positive converging lens. Its core function in photography is to gather and focus a large field of incident light, thereby:

• Concentrating Light Output: Increasing the intensity and directionality of a light source for more efficient illumination.

• Creating Soft Focus Effects: When deliberately defocused or used off-axis, the lens produces characteristic spherical aberration, yielding ethereal halation, glowing highlights, and a dreamlike reduction in micro-contrast without losing overall image sharpness—a classic vintage aesthetic.

Key Applications:

• Studio Portrait & Fashion Photography: For crafting flattering, diffused "Hollywood-style" portraits with creamy bokeh and highlight bloom.

• Cinematography & Film Production: Essential in creating atmospheric, soft-focus flashbacks or romantic sequences; used in front of lenses or on dedicated "filter trays."

• Specialized Lighting Equipment: Integrated into professional spotlights, projector systems, and custom modifers to shape and focus beam patterns.

• Creative Visual Arts: Employed in experimental photography, music videos, and advertising to produce distinctive, emotive imagery.