Fader cap

The K&F 49mm XV40 Nano-X is a variable ND8 to ND128 filter designed to eliminate the common "X" cross issue. It is made with imported AGC glass and features 32-layer nanometer coatings for superior image quality, all within an ultra-slim frame to prevent vignetting. The K&F 49mm XV40 Nano-X Variable ND Filter is a professional-grade tool for photographers and videographers who need precise control over light. With a variable density range from ND8 to ND128, this filter allows you to adjust your exposure to adapt to different lighting conditions without having to change filters. Say goodbye to the common "X" cross issue, as K&F Concept has utilized cutting-edge technology to perfectly avoid this problem on wide-angle and telephoto lenses. The filter is crafted from high-quality imported AGC glass for exceptional color fidelity and sharpness, ensuring no color cast affects your images. The glass is protected by NANOTEC multi-layer nanometer coatings (32 layers in total), making the filter waterproof, scratch-resistant, and anti-glaring. The 7.4mm ultra-slim frame is designed to prevent vignetting, even with a wide-angle focal length as low as 32mm. The CNC non-slip design on the frame makes it easy to install and remove the filter. This filter is compatible with all 49mm lenses. For this 49mm filter, a lens cap or hood with a 52mm size is recommended. ND8~ND128 variable density range Imported AGC Glass for color neutrality No 'X' cross on wide-angle lenses NANOTEC 32-layer coatings (waterproof, scratch-resistant, anti-glaring) Ultra-slim 7.4mm frame to avoid vignetting CNC non-slip design for easy handling 49mm filter thread size Recommended 52mm lens cap/hood size

Variable nd filter made by importing AGC glass, first-class filter material balancing the color batter, with no color cast and no effect for the image clarity and sharpness. * 【Self-Lock Frame, No 'X’ cross】Say goodbye to the "X" cross on images, K&F Concept utilizes cutting-edge technology to perfectly avoid the common "X" issue of variable nd filter on wide-angle and telephoto lenses. * 【NANOTEC】K&F Concept optical engineers developed multi-layer nanometer coatings (total of 33), waterproof, scratch-resistant, and anti-glaring, protecting the valued lens and presenting high-quality photos. * 【Ultra Slim Frame Avoid Vignetting】7.4mm Ultra-slim frame design utmost avoid the wide-angle vignetting (support 33mm focal length no vignetting). CNC-non-slip design helps install and remove the filter easily. * 【NOTE】This filter kit is compatible with all 52mm lenses. Please verify your camera's lens thread size before ordering. The number is always preceded by a "ø" (diameter) symbol. For the 52mm nd filter, the lens cap/hood size should be 55mm.     ND-------Extend exposure time. Try an ND, or neutral density, filter. ND filters reduce the amount of light entering the lens. This makes it easier to achieve effects such as a shallower depth of field or blurred motion. • Neutral density can be adjusted from 3 to 7 stops(ND8/ND16/ND32/ND64/ND128), easy to create different neutral density by rotating the ring. • The front diameter is larger than the back diameter of this filter, which is specially designed to avoid vignetting at a wide-angle lens. • Allows the use of slow shutter speeds, with high-speed films or digital cameras, to record movement/image blur in subjects. • Decrease the depth of field by using wider apertures, which helps separate subjects from their background.   Double-Sided Multilayer Green Coating Both sides of the filter with enhanced coating, effectively reducing the reflection that came from both the ground and filter itself, double-sided polishing technology balances the light well, ensuring image HD quality. No "X" Cross on Images K&F utilizes cutting-edge technology you're going to say goodbye to this common issue with wide-angle lenses and variable ND filters. Hydrophobic& Scratch Resistant In addition to state-of-the-art MRC, our optical engineers developed new nano-coating layer technology, called nanotech, from the ground up to repel dirt, water, and other elements by beading rather than absorbing and smearing. To withstand extreme wind, salt water, dust, and other abrasive conditions and elements.   Photos Taken by Photographer Around the World by Using K&F Concept ND8-ND128 Variable Neutral Density Filter

K&F Concept 58mm Nano-X Variable ND8-ND128 Filter: AGC glass, 35-layer nano-coated, no "X" cross, ultra-slim 7.4mm frame for 3–7 stops of clean light control. Take full command of exposure with the K&F Concept 58mm Nano-X Variable ND8-ND128 Filter-delivering 3 to 7 stops of adjustable neutral density without the dreaded “X” cross, even on wide-angle or telephoto lenses. Crafted from imported Japanese AGC optical glass, it ensures zero color cast, maximum sharpness, and true tonal balance. Advanced 35-layer nanometer coatings provide robust waterproof, scratch-resistant, and anti-glare protection while maintaining optical purity. The self-locking 7.4mm ultra-slim CNC aluminum frame eliminates vignetting down to 35mm focal length and offers non-slip grip for fast, secure installation. Perfect for video run-and-gun, long-exposure landscapes, or wide-aperture portraits in bright light-pair with a 62mm lens cap/hood. Verify your lens thread (“ø58”) before purchase. Key Features Variable ND8–ND128 (3–7 Stops): Smooth, stepless light reduction for motion blur or shallow depth. No “X” Cross Technology: Self-lock frame prevents dark cross artifacts on wide/tele lenses. Japanese AGC Glass: High-clarity, no color shift, edge-to-edge sharpness. 35-Layer Nano Coating: Waterproof, anti-scratch, oil/dust repellent, minimal flare. Ultra-Slim 7.4mm CNC Frame: No vignetting from 35mm; easy install/remove. 58mm Thread / 62mm Cap Size: Fits all 58mm lenses; use 62mm accessories.

K&F Concept 55mm XV40 Nano-X Variable ND Filter (ND8–ND128) – Professional-grade variable neutral density filter made with premium imported AGC optical glass. Offers smooth 3–7 stop light reduction with no “X” cross, no color cast, and uncompromised sharpness. Features 34-layer Nano-X coating, waterproof and scratch-resistant surface, and a 7.4mm ultra-slim CNC frame for zero vignetting. The K&F Concept 55mm XV40 Nano-X Variable ND Filter (ND8–ND128) is designed for photographers and filmmakers seeking precise exposure control in a compact, high-quality filter. Built with imported Japanese AGC optical glass, this filter delivers unmatched image clarity, color fidelity, and contrast - without any color cast or image degradation. The advanced self-lock frame design completely eliminates the unwanted “X” cross pattern commonly found in variable ND filters, ensuring smooth and consistent results across wide-angle and telephoto lenses alike. Featuring 34 layers of Nano-X multi-resistant coating, the filter repels water, oil, and dust, while providing superior protection against scratches and reflections. This ensures clean, vivid, and high-contrast images in any shooting environment - from bright daylight to cinematic low-light scenes. The ultra-slim 7.4mm CNC aluminum frame minimizes vignetting (supports down to 34mm focal length) and provides a precise, non-slip grip for effortless installation and removal. This ND filter is perfect for long-exposure photography, video shooting, and achieving cinematic motion blur under bright lighting conditions. Key Features: 3–7 Stops Light Reduction (ND8–ND128) – Ideal for shooting in bright environments and creating motion blur or shallow depth-of-field effects. Imported AGC Optical Glass – Delivers exceptional clarity and true-to-life color reproduction. No “X” Cross Pattern – Innovative self-lock frame eliminates the common cross effect found in variable ND filters. 34-Layer Nano-X Coating – Waterproof, oil-resistant, anti-glare, and scratch-proof for long-lasting performance. Ultra-Slim 7.4mm Frame – Prevents vignetting on wide-angle lenses (supports up to 34mm focal length). CNC Precision Frame – Non-slip design for easy installation and removal. Universal 55mm Fit – Compatible with all 55mm thread lenses; use 58mm caps/hoods for this filter. Specifications: Filter Type: Variable ND (ND8–ND128) Light Reduction: 3–7 Stops Glass Material: Japanese AGC Optical Glass Coating: 34-Layer Nano-X Multi-Resistant Frame Material: CNC Aluminum Alloy Frame Thickness: 7.4mm Thread Size: 55mm Recommended Lens Cap Size: 58mm Water / Oil / Scratch Resistance: Yes Anti-Reflection: Yes Package Includes: 1 × K&F Concept 55mm XV40 Nano-X Variable ND Filter (ND8–ND128) 1 × Protective Storage Case

K&F Concept's ND Filter, crafted from professional optical glass with advanced Nano coating, ensures precise light reduction while preserving color balance. The ultra-slim design prevents vignetting, and its durable aviation aluminum frame guarantees a clear, high-quality photographic experience. * 【Material】ND Filter: Made by Completed Professional Optical Glasses instead of Optical Resin. filter reduces the intake of light without affecting the overall color balance. * 【NANOTEC】Our optical engineers developed new Nano coating layer technology， Waterproof, scratch-resistant, anti-reflective green coating, effectively prevent from oil, fingerprint, scratch, protect valued lens. * 【No "X" cross on images】Say goodbye to the "X" cross on images, K&F utilize cutting edge technology you're going to say goodbye to this common issue with wide angle lenses and variable ND filters. * 【Professional Design】Ultra slim rim design preventing wide angle vignetting. Extra tough aviation aluminum frame ensuring durability and jamming prevention. * 【NOTE】Please verify your camera's lens thread size first(usually marked somewhere on the lens barrel or the lens cap).This number is always preceded by a "Ø" symbol. i.e. Ø62 = 62mm lens thread size.

K&F Concept 82mm Nano-X Variable/Fader ND Filter, ND2-ND32, W/O Black cross + 3pcs clean cloth. ND Filter: Made by Completed Professional Optical Glasses instead of Optical Resin. filter reduces the intake of light without affecting the overall color balance.For this 82mm ND filter，the lens cap/hood should be 86mm. * 【Material】 ND Filter: Made by Completed Professional Optical Glasses instead of Optical Resin. filter reduces the intake of light without affecting the overall color balance.For this 82mm ND filter，the lens cap/hood should be 86mm. * 【No “X” cross on images】Say goodbye to the "X" cross on images, K&F utilize cutting edge technology you're going to say goodbye to this common issue with wide angle lenses and variable ND filters. * 【NANOTEC】Our optical engineers developed new Nano coating layer technology， Waterproof, scratch-resistant, anti-reflective green coating, effectively prevent from oil, fingerprint, scratch, protect valued lens. * 【Professional Design】Ultra slim rim design preventing wide angle vignetting. Extra tough aviation aluminum frame ensuring durability and jamming prevention. * 【NOTE】This Filter kit is compatible with all 82mm lenses. Please verify your camera's lens thread size(usually marked somewhere on the lens barrel or printed underneath the lens cap) before ordering. The number is always preceded by a "ø" (diameter) symbol. Variable ND2-32 No "X" Cross 5 Stops Adjustable Accurate Stop 8K PreviousNext Coatings Waterproof Scratch Resistant PreviousNext Frame Protection PreviousNext FILTER Reflectivity 0.2% Size 82mm Series Nano-X series Recommended Scenes Video Shooting/Landscape Photography Function No X cross/Light reduction effect Stops 0.3 to 1.5（1 to 5 Stops) Filter Material Japanese AGC Glass Multi-Coating 28 layers Waterproof √ Scratch-resistant √ HD √ Transmittance ∕ Antireflection √ Pattern √ Filter Thickness 7.3mm Shape Circle Ring Material Aviation aluminum alloy

Achieve optimal image quality with the K&F Concept Variable ND Filter. Crafted from imported AGC glass, this first-class filter material ensures color balance, clarity, and sharpness, free from color casts. Say farewell to the dreaded "X" cross issue, thanks to advanced technology that eliminates it, even on wide-angle and telephoto lenses. With 40 layers of multi-layer nanometer coatings, this filter is waterproof, scratch-resistant, and anti-glare, offering premium lens protection and superior photo quality. The ultra-slim 7.4mm frame design prevents wide-angle vignetting (supports a 40mm focal length with no vignetting), and the CNC non-slip design makes installation and removal a breeze. Compatible with 82mm lenses; verify your camera's lens thread size (preceded by the "ø" symbol) before ordering, and for the 82mm ND filter, ensure your lens cap/hood size is 86mm. * 【Imported AGC Glass】Variable nd filter made by importing AGC glass, first-class filter material balancing the color batter, with no color cast and no effect for the image clarity and sharpness. * 【Self-Lock Frame, No 'X’ cross】Say goodbye to the "X" cross on images, K&F Concept utilizes cutting-edge technology to perfectly avoid the common "X" issue of variable nd filter on wide-angle and telephoto lenses. * 【NANOTEC】K&F Concept optical engineers developed multi-layer nanometer coatings (total of 40), waterproof, scratch-resistant, and anti-glaring, protecting the valued lens and presenting high-quality photos. * 【Ultra Slim Frame Avoid Vignetting】7.4mm Ultra-slim frame design utmost avoid the wide-angle vignetting (support 40mm focal length no vignetting). CNC-non-slip design helps install and remove the filter easily. * 【NOTE】This filter kit is compatible with all 82mm lenses. Please verify your camera's lens thread size before ordering. The number is always preceded by a "ø" (diameter) symbol. For the 82mm nd filter, the lens cap/hood size should be 86mm.

K&F 58MM Nano-X Multifunctional CPL+Variable/Fader ND 2~32 filter * 【ND & CPL filter 2 in 1】One filter has both of CPL and varaible ND filter function,save your time to replace two filters; it can not only reduce the amount of light entering the lens but also darken skies, manage reflections at the same time. * 【No “X” cross on images】Say goodbye to the "X" cross on images, K&F utilize cutting edge technology you're going to say goodbye to this common issue with wide angle lenses and variable ND filters. * 【Material】Made by completed professional optical glasses, Multi-layer coating, only allows 0.7% light transmittance and waterproof, scratch-resistant, which could protect your valued lens. * 【Filter Frames】Filter Frames made by aluminum alloy, the serrated design of the edge of the frame makes it easy to install. There is 5 mark from Min to ND32 on frame, It is convenient for you to sure the ND filter stops. * 【Note】 Please verify your camera's lens thread size(usually marked somewhere on the lens barrel or printed underneath the lens cap) before ordering. The number is always preceded by a "ø" (diameter) symbol.

62mm ND2-ND32 (1-5 Stop) Variable ND Filter and CPL Circular Polarizing Filter 2 in 1 for Camera Lens No X Spot Weather Sealed     * 【ND & CPL filter 2 in 1】One filter has both of CPL and varaible ND filter function,save your time to replace two filters; it can not only reduce the amount of light entering the lens but also darken skies, manage reflections at the same time.    * 【No “X” cross on images】Say goodbye to the "X" cross on images, K&F utilize cutting edge technology you're going to say goodbye to this common issue with wide angle lenses and variable ND filters.    * 【Material】Made by completed professional optical glasses, Multi-layer coating, only allows 0.7% light transmittance and waterproof, scratch-resistant, which could protect your valued lens.    * 【Filter Frames】Filter Frames made by aluminum alloy, the serrated design of the edge of the frame makes it easy to install. There is 5 mark from Min to ND32 on frame, It is convenient for you to sure the ND filter stops.    * 【Note】 Please verify your camera's lens thread size(usually marked somewhere on the lens barrel or printed underneath the lens cap) before ordering. The number is always preceded by a "ø" (diameter) symbol.

The K&F 72MM Nano-X Multifunctional CPL + Variable ND 2-32 Filter combines ND and CPL features to reduce light, manage reflections, and enhance color contrast, all with no "X" cross artifacts. Experience ultimate versatility with the K&F 72MM Nano-X Multifunctional CPL + Variable ND 2-32 Filter. This 2-in-1 filter combines the functionality of both an ND filter (ND2-ND32) and a circular polarizer (CPL), making it easy to reduce light and manage reflections simultaneously. Perfect for landscape and outdoor photography, this filter helps you darken skies, enhance color contrast, and avoid the hassle of switching between filters. Key Features: ND & CPL 2-in-1 Filter: Combines a variable ND filter with 2 to 5 stops of light reduction (ND2-ND32) and a circular polarizer for glare reduction and color enhancement. No "X" Cross on Images: Advanced technology ensures there are no unwanted “X” cross patterns, commonly seen with wide-angle lenses and other variable ND filters. Professional Optical Glass: Made from high-quality optical glass with multi-layer coatings that allow 0.7% light transmittance. The filter is waterproof, scratch-resistant, and durable, providing long-lasting protection for your lens. Aluminum Frame: The filter features a lightweight yet sturdy aluminum frame with a serrated edge design for easy installation. Markings from ND2 to ND32 are clearly visible on the frame for accurate adjustment. Compatibility: Suitable for 72mm lens thread sizes. Ensure compatibility by checking the diameter symbol (ø) on your lens or lens cap before purchase. Specifications: Size: 72MM ND Stops: 2-5 (ND2 to ND32) Transmittance: 0.7%

K&F 86MM Nano-X Variable/Fader ND Filter, ND2~ND32, W/O Black Cross with 3pcs cleaning cloths. ND Filter: Made by Completed Professional Optical Glasses instead of Optical Resin. filter reduces the intake of light without affecting the overall color balance. For this 86mm ND filter, the lens cap/hood should be 95mm. * 【Material】 ND Filter: Made by Completed Professional Optical Glasses instead of Optical Resin. filter reduces the intake of light without affecting the overall color balance.For this 86mm ND filter，the lens cap/hood should be 95mm. * 【No “X” cross on images】Say goodbye to the "X" cross on images, K&F utilize cutting edge technology you're going to say goodbye to this common issue with wide angle lenses and variable ND filters. * 【NANOTEC】Our optical engineers developed new Nano coating layer technology， Waterproof, scratch-resistant, anti-reflective green coating, effectively prevent from oil, fingerprint, scratch, protect valued lens. * 【Professional Design】Ultra slim rim design preventing wide angle vignetting. Extra tough aviation aluminum frame ensuring durability and jamming prevention. * 【NOTE】This Filter kit is compatible with all 86mm lenses. Please verify your camera's lens thread size(usually marked somewhere on the lens barrel or printed underneath the lens cap) before ordering. The number is always preceded by a "ø" (diameter) symbol.   Variable ND2-32  No "X" Cross  5 Stops Adjustable  Accurate Stop  8K PreviousNext   Coatings  Waterproof  Scratch Resistant PreviousNext   Frame  Protection PreviousNext FILTER Reflectivity 0.2% Size 86mm Series Nano-X series Recommended Scenes Video Shooting/Landscape Photography Function No X cross/Light reduction effect Stops 0.3 to 1.5（1 to 5 Stops) Filter Material Japanese AGC Glass Multi-Coating 28 layers Waterproof √ Scratch-resistant √ HD √ Transmittance \ Antireflection √ Pattern   Filter Thickness 0.13in/3.3mm Shape Circular Ring Material Aviation aluminum alloy

K&F's 95mm ND Filter, made from professional optical glass, reduces light intake without impacting color balance. It eliminates the "X" cross issue common with wide-angle lenses and variable ND filters, thanks to cutting-edge technology. With a Nano coating layer for waterproofing, scratch-resistance, and anti-reflection, this filter protects your lens from oil, fingerprints, and scratches. Its professional design includes an ultra-slim rim to prevent vignetting and a durable aviation aluminum frame. Please ensure compatibility with your 95mm lens by checking your camera's thread size, typically marked on the lens barrel. * 【Material】 ND Filter: Made by Completed Professional Optical Glasses instead of Optical Resin. filter reduces the intake of light without affecting the overall color balance.For this 95mm ND filter，the lens cap/hood should be 105mm. Because of the update of the product's package, the new and the old version will be sent randomly. * 【No “X” cross on images】Say goodbye to the "X" cross on images, K&F utilize cutting edge technology you're going to say goodbye to this common issue with wide angle lenses and variable ND filters. * 【NANOTEC】Our optical engineers developed new Nano coating layer technology， Waterproof, scratch-resistant, anti-reflective green coating, effectively prevent from oil, fingerprint, scratch, protect valued lens. * 【Professional Design】Ultra slim rim design preventing wide angle vignetting. Extra tough aviation aluminum frame ensuring durability and jamming prevention. * 【NOTE】This Filter kit is compatible with all 95mm lenses. Please verify your camera's lens thread size(usually marked somewhere on the lens barrel or printed underneath the lens cap) before ordering. The number is always preceded by a "ø" (diameter) symbol.

ND Filter: Made by Completed Professional Optical Glasses instead of Optical Resin. filter reduces the intake of light without affecting the overall color balance.For this 105mm ND filter, the lens cap/hood should be 112mm. * 【Material】 ND Filter: Made by Completed Professional Optical Glasses instead of Optical Resin. filter reduces the intake of light without affecting the overall color balance.For this 105mm ND filter，the lens cap/hood should be 112mm. * 【No “X” cross on images】Say goodbye to the "X" cross on images, K&F utilize cutting edge technology you're going to say goodbye to this common issue with wide angle lenses and variable ND filters. * 【NANOTEC】Our optical engineers developed new Nano coating layer technology， Waterproof, scratch-resistant, anti-reflective green coating, effectively prevent from oil, fingerprint, scratch, protect valued lens. * 【Professional Design】Ultra slim rim design preventing wide angle vignetting. Extra tough aviation aluminum frame ensuring durability and jamming prevention. * 【NOTE】This Filter kit is compatible with all 105mm lenses. Please verify your camera's lens thread size(usually marked somewhere on the lens barrel or printed underneath the lens cap) before ordering. The number is always preceded by a "ø" (diameter) symbol. Variable ND2-32 No "X" Cross 5 Stops Adjustable Accurate Stop 8K PreviousNext Coatings Waterproof Scratch Resistant PreviousNext Frame Protection PreviousNext

The imported optical glass of the K&F Concept ND Filter, crafted from premium Japanese AGC glass and boasting 28 multi-layer coatings, is designed to deliver top-tier performance. These coatings significantly reduce reflections and glare while ensuring superior image quality. The filter is built to withstand the elements with its waterproof, scratch-resistant, hydrophobic, and oil-proof coatings applied to both sides. Its frame features a unique putter design that enables precise stop adjustment, facilitating seamless video shooting. Each stop, ranging from ND2 to ND400, is conveniently marked on the frame. Ideal for ultra-wide-angle applications, the filter's ultra-slim 7.4mm frame ensures there's no vignetting, even at a 16mm focal length. With compatibility for all 105mm lenses, photographers need to verify their camera's lens thread size before ordering, typically marked on the lens barrel or printed beneath the lens cap with a "ø" (diameter) symbol. This ND filter is an essential tool for enhancing photography and videography. * 【Import Optical Glass】Crafted from premium Japanese AGC optical glass with an astonishing 28 multi-layer coatings, this ND filter reduces reflections and glare, ensuring superior image quality. * 【Waterproof & Scratch Resistant】Equipped with multi-layer hydrophobic, oil-proof, and scratch-resistant coatings on both sides. * 【Putter Design for Precision】The frame is ingeniously designed as a putter, allowing you to accurately adjust the stop. Video shooting users can effortlessly adjust the stop with auxiliary tools. Every stop from ND2 to ND400 is conveniently marked on the frame, providing smooth 360° rotation for multi-scene applications. * 【No Vignetting】Designed for ultra-wide-angle applications, the ultra-slim frame measures only 7.4mm, ensuring no vignettes even at a 16mm focal length. * 【Choose Right Size】This ND filter is compatible with all 105mm lenses. Please verify your camera's lens thread size before ordering. Your camera's lens thread size will be marked somewhere on the lens barrel or printed underneath your lens cap. This number is always preceded by a "ø" (diameter) symbol.

The versatile K&F Concept ND & CPL Filter 2-in-1 offers convenience by combining the functions of a CPL and variable ND filter, eliminating the need to switch between two filters. This innovation not only reduces the amount of light entering your lens but also effectively darkens skies and manages reflections simultaneously. You can bid farewell to the common issue of "X" cross appearing in your images, thanks to K&F's cutting-edge technology, ensuring exceptional performance even with wide-angle lenses and variable ND filters. Crafted from professional optical glass, the filter features a multi-layer coating, allowing only 0.7% light transmittance while being waterproof and scratch-resistant, providing robust protection for your valuable lens. The aluminum alloy filter frames with serrated edges are designed for easy installation, and they feature convenient markings from Min to ND32 to help you precisely control the ND filter's effect. Before ordering, please remember to check your camera's lens thread size, which is typically marked on the lens barrel or printed underneath the lens cap, and is preceded by the "ø" (diameter) symbol. * 【ND & CPL Filter 2 in 1】One filter has both of CPL and varaible ND filter function,save your time to replace two filters; it can not only reduce the amount of light entering the lens but also darken skies, manage reflections at the same time. * 【No “X” Cross on Images】Say goodbye to the "X" cross on images, K&F utilize cutting edge technology you're going to say goodbye to this common issue with wide angle lenses and variable ND filters. * 【Material】Made by completed professional optical glasses, Multi-layer coating, only allows 0.7% light transmittance and waterproof, scratch-resistant, which could protect your valued lens. * 【Filter Frames】Filter Frames made by aluminum alloy, the serrated design of the edge of the frame makes it easy to install. There is 5 mark from Min to ND32 on frame, It is convenient for you to sure the ND filter stops. * 【Note】 Please verify your camera's lens thread size(usually marked somewhere on the lens barrel or printed underneath the lens cap) before ordering. The number is always preceded by a "ø" (diameter) symbol.