• The only reference lens engineered by Panasonic Lumix — an optical masterpiece built with zero compromises, widely regarded as the benchmark against which all other L-mount lenses are judged.
• Excellent condition, fully tested, and working flawlessly.
• Certified by Leica to meet the highest optical standards—arguably one of the sharpest 50mm prime lenses ever engineered.
• Optics are pristine: completely clean, clear, and free from scratches, fungus, haze, or dust.
• Lens Firmware fully updated to Version 2.0 — unlocks advanced focus-ring customisation and ensures 100% seamless phase-hybrid autofocus tracking and tracking stability with the newest L-mount bodies (including S5II, S5IIX, S9, S1II, S1IIE, and S1IIR).
• Suppressed focus breathing makes this an incredible choice for both high-end portraiture and professional cinematography.
• Lightly used and reluctantly sold, as I primarily spend my time shooting at longer focal lengths (85mm and 135mm).

• High-end buyers are often aware that some early-batch Panasonic Pro lenses developed internal cement delamination/haze. To provide absolute transparency and peace of mind, please review the specific manufacturing details and real-world test images included in this listing gallery:
• Serial Number: XF9DB101750 (Cleanly laser-etched into the rear metal L-mount flange).
• Production Date: April 2019 (Verified via Panasonic’s production code matrix: 3rd digit '9' for 2019, 4th digit 'D' for April).
• Real-World Test Image 1 (Cavalier Spaniel Portrait): Shot wide open at f/1.4. Note the bitingly sharp micro-contrast on the fur and deep, rich black levels—proving the internal glass elements are completely clear and free of any contrast-reducing factory haze.
• Real-World Test Image 2 (Bottle & Fine Text): Complex reflection and fine text test. Notice how the small lettering remains crisp and the specular highlights on the glass bottle are perfectly clean with zero milky blooming or internal light scattering.
• This is a flawless, healthy, and highly reliable copy of this legendary lens.

Please note: No original outer retail box is included. The lens will be heavily bubble-wrapped and safely packed inside a rigid shipping box.

• Genuine Lumix Front Lens Cap
• Genuine Lumix Rear Lens Cap
• Genuine Lumix Sun Hood
• Original Lumix Protective Carry Pouch

Fits all Full-Frame Leica L-Mount Alliance camera systems, including:

• Panasonic Lumix: S1, S1R, S1H, S5, S5II, S5IIX, S9, S1II, S1IIE, S1IIR
• Leica: SL, SL2, SL3
• Sigma: FP, FP L

• Fast worldwide shipping available via the eBay Global Shipping Programme.
• Fully tracked, signed for, and comprehensively insured in transit.

To assist with global search visibility, this genuine item is compatible with and relates to the following technical photographic search terms:

• Camera Systems & Bodies: Panasonic Lumix S1, S1R, S1H, S5, S5II, S5IIX, S9, BS1H, Leica SL, SL2, SL3, CL, TL, Sigma FP, FPL, L Mount Alliance, Full Frame Mirrorless.
• Technical Specs & Optics: Panasonic S-X50, 50mm f1.4, f/1.4 ASPH, Reference Lens, Optical Benchmark, Certified by Leica, Linear Motor, Contrast AF, Phase Hybrid AF, Firmware 2.0, 11 Blade Diaphragm, Weather Sealed, Professional Portrait Lens, Low Light Videography, Prime Lens.
• Alternative Search Terms: Lumix 50mm Pro, Leica L Mount Glass, Sigma Art Alternative, Cine Lens Alternative, L-Mount 50mm Prime, S Pro Series Optics.
• Photography Styles: Portraiture, Street Photography, Wedding Photography, Cinematography, Commercial Studio, High Resolution Sensor, Bokeh King, Bokeh Monster.