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Lightdow 85mm F1.8 Medium Telephoto Portrait Full Frame E Mount Lens for Sony A9 A7R A7S A7 NEX-7 NEX-6 NEX-5 A6500 A6300 A6000

Planoconvex Lens Diameter 5mm 5.5mm 5.9mm 9.8mm 6mm 10mm 12mm Optical K9 Experimental lens

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10-100pcs LED Lens 1W 3W 5W High Power 15mm Waterproof 20 45 90 Degree Angle Lens For DIY Washwall Light Lamp Convex Reflector

1 Set 44mm LED Lens Optical Glass 60 120 Degree + 50mm Reflector Collimator + Fixed Bracket for 20W 30W 50W 100W COB LED Chip

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6mm 8mm 10mm 12mm 13mm 14mm 15mm 16 20mm 25 30 32 35 40mm Mini Optical Glass Lens Optics Plano Convex Condenser LED No Edge Lens