Best KFCONCEPT Lens Adapters

This K&F Concept 2-pack step-up ring adapter converts 55mm lenses to accept 67mm filters like ND, CPL, and UV. Its durable brass construction ensures smooth, long-lasting performance for photographers expanding filter options.

• Effortlessly adapt 55mm lenses to popular 67mm filters for versatile shooting
• Durable brass build resists deformation for reliable, long-term use
• Smooth threading prevents scratches and ensures secure filter attachment
• Two-pack plus microfiber cloth provides value and easy maintenance
• Unlock ND, CPL, and UV filters without replacing your lens collection

Exceptional durability from brass construction. Precise fit for seamless lens-to-filter conversion. Includes extras like cleaning cloth for convenience.

Requires exact 55mm lens thread confirmation before purchase. Fixed 67mm filter side limits to matching accessories. May feel snug on some lenses needing careful threading.

This K&F Concept adapter mounts Nikon AI Nikkor F lenses onto Sony E-mount mirrorless cameras like A6000, A6400, and A7 series. Its all-metal anodized construction and infinity focus deliver reliable manual performance for photographers expanding lens options affordably.

• Unlock Nikon F lenses on Sony E-mount cameras for expanded creative options
• Infinity focus ensures sharp landscapes and portraits at any distance
• All-metal anodized build withstands daily use without wear
• Anti-rotation square design installs and releases effortlessly
• Matte interior eliminates flare for cleaner images

Durable hardened aluminum construction. Supports infinity focus and manual exposure. Broad Sony E-mount compatibility including A7 and A6000 lines.

No autofocus or electronic aperture control. Requires manual stop-down metering. Camera menu adjustment needed for shutter release.

This K&F Concept metal filter holder kit includes 8 adapter rings from 49mm to 82mm for versatile lens compatibility and supports 100mm square filters up to 2mm thick. Its aviation aluminum construction offers superior strength and impact resistance, making it ideal for landscape photographers using wide-angle lenses over 18mm.

• Universal fit with 8 adapter rings (49-82mm) for seamless use across most DSLR and mirrorless lenses
• Ultra-durable aviation aluminum build withstands impacts and ensures long-term reliability in the field
• Holds up to two 100mm square filters simultaneously for stacked effects like ND and GND
• Arc-shaped design with clips prevents vignetting on wide-angle lenses over 18mm
• Precision CNC-machined black sandblasted finish for professional handling and corrosion resistance

Extensive adapter range covers popular lens sizes from 49mm to 82mm. High-strength aluminum alloy resists distortion and compression. Compatible with standard 100mm x 2mm square filter systems.

Limited to lenses with focal lengths greater than 18mm to avoid vignetting. Requires exact 100mm width and 2mm thickness filters. Adapters must be swapped for different lens sizes.

This K&F Concept adapter mounts Canon FD/FL 35mm SLR lenses onto Canon EOS EF/EF-S cameras, guaranteeing infinity focus with precision brass and aluminum construction. It's perfect for photographers reviving vintage primes on modern bodies like EOS 5D, 7D, or Rebels without buying new lenses.

• Revive irreplaceable Canon FD/FL prime lenses on modern EOS cameras, saving thousands on new glass
• Guaranteed infinity focus for sharp distant shots without cropping your vintage collection
• Precision-machined brass and aluminum build ensures rock-solid fit and durability over plastic adapters
• Compact black design integrates seamlessly with DSLRs like EOS 5D, 7D, Rebels, and cinema cams
• Supports full manual control for creative exposure in aperture priority or manual modes

Infinity focus and beyond for versatile shooting distances. High-quality metal construction prevents wobble and wear. Affordable way to extend lens compatibility across EOS lineup.

Manual focus and aperture only—no autofocus or electronic control. Requires camera setting change to ignore 'no lens' error. Diaphragm must be adjusted manually on the lens.

This manual focus adapter connects M42 screw mount lenses to Sony E-mount cameras, enabling precise infinity focus and smooth compatibility. Buy it if you want to revive vintage M42 lenses on Sony Alpha or NEX bodies.

• Revives vintage M42 lenses on Sony E-mount cameras for endless creative possibilities
• Precision craftsmanship ensures smooth mounting and adjustable focus to infinity
• Matte black interior minimizes glare and reflections for sharper images
• Durable copper and aluminum build allows easy installation without excessive force
• Supports manual control on full-frame or APS-C Sony models like Alpha a7 series and NEX

High-tolerance precision for seamless lens-camera connection. Infinity focus adjustment compensates for temperature shifts. Wide compatibility with Sony E-mount including a7, a9, and NEX series.

No electronic contacts or autofocus support. Manual diaphragm and exposure control required. Possible vignetting when using APS-C lenses on full-frame sensors.

This manual lens mount adapter connects Canon EF/EF-S lenses to Micro Four Thirds cameras like Olympus PEN and Panasonic Lumix models. Its precision metal construction ensures a tight fit and infinity focus, making it ideal for photographers adapting DSLR glass to mirrorless bodies.

• Unlock Canon EF/EF-S lenses on Olympus and Panasonic MFT cameras for expanded creative options
• Durable brass and aluminum build provides a secure, light-tight seal that lasts
• Infinity focus capability delivers sharp images from landscapes to portraits
• Anti-rotation square design simplifies installation and prevents slippage
• Precision CNC machining ensures flawless fit without wobble or play

Perfect infinity focus for versatile shooting distances. High-quality metal construction outperforms plastic adapters. Broad compatibility with popular Olympus PEN, OM-D, and Panasonic Lumix models.

Manual operation only; no autofocus or electronic aperture control. Canon STM lenses incompatible due to motor power needs. Aperture defaults to smallest f-stop without manual ring transfer.

This K&F Concept adapter enables Canon EF/EF-S lenses on EOS R mount cameras like R5, R6, and RP with full auto focus and electronic aperture control. Its gold-plated contacts deliver reliable EXIF transmission and image stabilization, perfect for photographers expanding lens options on mirrorless bodies.

• Unlock fast, accurate auto focus for sharp images on Canon EOS R cameras
• Control aperture electronically for seamless exposure adjustments
• Supports image stabilization to capture steady shots in low light
• Transmit full EXIF data for precise metadata and lens info
• Broad compatibility with EOS R6, R5, RP, R50 and more models

Rapid auto focus and detection via gold-plated contacts. Full IS support for stable, blur-free images. EXIF signal transmission for complete photo metadata.

Vignetting possible with full-frame lenses on crop-sensor cameras. Poor contact if not fully seated on camera or lens. Requires mount verification before purchase.

This K&F Concept set includes 11 metal step-down rings from 82mm to 26mm, allowing smaller filters on larger lenses. Its superfine polished construction ensures precise threading and durability for photographers needing broad filter compatibility.

• Unlocks smaller filters for larger lenses across 11 sizes from 82mm to 26mm
• Precision metal build with superfine polishing for flawless threading
• Maximizes existing filter collection without buying duplicates
• Durable construction withstands field use and frequent swaps
• Seamless compatibility with lens hoods, filters, and attachments

Comprehensive 11-piece range covers most popular lens sizes. High-quality metal resists wear and ensures secure fit. Polished edges prevent scratches and vignetting.

Step-down only, no step-up functionality. Thin profile may wobble with very heavy filters. Specific sizes may not cover all niche threads.

This K&F Concept 18-piece metal filter ring adapter set includes 9 step-up rings (37-82mm) and 9 step-down rings for versatile lens compatibility. Its aviation aluminum build delivers tight, wobble-free connections, perfect for photographers using filters across multiple lenses.

• Versatile 18-piece kit adapts lenses from 37mm to 82mm for seamless filter use
• Ultra-secure fit eliminates wobbling and cross-threading for reliable performance
• Aviation aluminum construction withstands impacts and daily wear
• Easily converts lens threads for filters, hoods, flashes, and converters
• Compact design attaches solidly with minimal chemical residues

Comprehensive size range covers most common lens threads. Durable, high-strength material for long-term reliability. Tight connections ensure stability during shoots.

Limited to specific step-up/down size pairs, may not cover all lenses. All-black finish offers no color options. Carrying 18 rings can add bulk to your kit.

This K&F Concept 82mm filter combines variable ND2-32 neutral density and CPL polarizing functions in one lens for controlling light and reducing reflections. Its self-locking frame eliminates X-cross artifacts, making it ideal for photographers and videographers shooting landscapes or water scenes.

• Dual ND and CPL action reduces light and glare while boosting color saturation and contrast
• Self-locking frame prevents X-cross shadows for clean images at any stop from ND2 to ND32
• Premium AGC glass with 24-layer coatings delivers sharp, color-neutral results rain or shine
• Putter design enables precise, tool-assisted adjustments perfect for video shooters
• Infinite rotation between 1-5 stops for seamless exposure control without repositioning

Versatile 2-in-1 filter saves space and money. Eliminates common variable ND cross patterns. Superior optical clarity with no color shift.

Requires oversized 95mm lens cap, not standard 82mm. Limited to 1-5 stop range (ND2-32). Lens thread size must be verified before purchase.