I have lost more lens caps than I care to admit. Travel shoots, lens swaps in windy parking lots, the dreaded unzip-a-camera-bag moment of discovery — if you shoot mirrorless, you have been there.
Mirrorless lenses are compact, expensive, and have front elements that sit terrifyingly close to the edge of the barrel. A single scratch or dust speck can quietly degrade every photo you take. A good lens cap is the cheapest insurance you will ever buy for a premium mirrorless lens.
This roundup is built specifically for mirrorless shooters — Sony Alpha, Canon EOS R, Nikon Z, Fujifilm X, OM System, and Micro Four Thirds. I tested ten of the most popular options on Amazon, mapped them to the filter threads each mount actually uses, and highlighted which caps solve the most common mirrorless pain point: caps that pop off in the bag. If you want a deeper primer on lens caps in general, our lens cap guide covers the basics; the picks below are the upgraded 2026 edition.
Top 3 Best Lens Caps for Mirrorless Cameras in 2026
Breakthrough Photography 72mm Center-Pinch
- Extra strong springs
- 100% recycled plastic
- Universal 72mm fit
PROfezzion 49mm Lens Cap 2-Pack
- 49mm fits kit zooms
- Deluxe elastic keepers
- Sturdy ABS build
Best Lens Caps for Mirrorless Cameras in September
What Is a Lens Cap and Why Mirrorless Cameras Need Specific Caps
A lens cap is a protective cover — usually plastic, sometimes metal or rubber — that snaps, pushes, or magnetically attaches over the front or rear element of a camera lens. Its job is simple: keep dust, scratches, fingerprints, and stray impacts away from the glass when the lens is not in use.
Mirrorless cameras differ from DSLRs in three ways that matter for lens caps. First, mirrorless lenses are physically smaller and shorter, which means the front element is closer to the front edge of the lens barrel. A bump that would have hit the barrel on a DSLR can hit the glass on a mirrorless. Second, mirrorless lenses tend to be expensive — Sony GM, Canon RF L, and Nikon Z S lenses regularly cross into premium price territory — so the cost of a single scratched front element is real. Third, the filter thread sizes mirrorless shooters deal with are different from DSLR standards: many mirrorless kit zooms use 49mm, 52mm, or 55mm threads, while fast mirrorless primes often sit at 62mm or 67mm.
You will encounter four main cap styles. Center-pinch caps have two side tabs you pinch to attach and remove — they work even when a lens hood is mounted and are the standard for mirrorless. Snap-on caps are similar but use spring tension instead of a pinch, and are sometimes branded as universal. Push-on caps friction-fit over the front ring and are the cheapest option. Magnetic caps use a self-adhesive metal ring on the lens and a magnetic cover that snaps on instantly — popular with videographers who swap caps constantly. Universal stretch-fit caps grip the outside of the lens barrel and accept any diameter in a stated range, ideal if you want one cap for an entire bag of lenses.
1. Breakthrough Photography 72mm Snap-On Center-Pinch Lens Cap
Pros
- Extra strong springs keep cap securely attached
- Made from 100% recycled plastic with eco-friendly appeal
- Snug fit even with lens hood installed
- Higher quality feel than typical generic caps
Cons
- Release clips sit flat and can be harder to grip with deep filter setups
I have been using the Breakthrough Photography 72mm cap on my Sony FE 24-70 GM and my Nikon Z 24-70 f/4 S for the better part of a year, and it is the cap I trust most in my bag. The extra-strong springs are the standout — the cap stays put when I tip the bag open, when I am pulling lenses in and out on a wedding day, and when I am shooting in cold weather where plastic tends to contract.
The construction is a thoughtful detail. Breakthrough makes the body from 100% recycled plastic, so the cap has a slightly textured, matte finish rather than the glossy cheap feel you get from off-brand caps. It snaps on with a satisfying click and pops off with a clean pinch. At 72mm, this cap covers a wide swath of premium mirrorless glass — most mid-range zooms and many fast primes across Sony FE, Canon RF, Nikon Z, and Fujifilm XF share that thread.
The 5,266 reviews on this cap back up what I see in person: photographers consistently praise the tight fit and report that it solves the “stock Fuji cap falls off” problem. One minor quibble — the release tabs sit flat against the cap body, so when you stack a deep CPL or UV filter on the lens, it can be slightly harder to grip. Not a deal-breaker, just a habit shift.
Who should buy this cap
Anyone shooting mid-range to high-end mirrorless zooms with a 72mm filter thread — Sony FE 24-70 GM, Nikon Z 24-70 f/4 S, Canon RF 24-240, Sigma 24-70 DN Art — will feel the upgrade immediately over stock caps.
Who should skip this cap
If your entire lens kit is 49mm or 55mm kit-lens territory, the price-per-cap math works out worse than the JJC or PROfezzion multi-packs. Buy this one for your hero lens, not your pancake prime.
2. JJC 2-Pack 67mm Front Lens Cap Cover with Cap Keeper Leash
Pros
- Two-pack provides spare cap and keeper
- Reliable fit comparable to OEM caps
- Keeper leash prevents loss
- Works with lens hood attached
Cons
- Plastic feels less premium than higher-end caps
- Some users report occasional dislodging in bags
The JJC 67mm 2-pack is the Amazon bestseller for a reason: with 12,395 reviews and a 4.6-star average, it is the safest budget-friendly pick on the market. I keep two of these in my bag at all times — one on a Canon RF 70-200 and one waiting in a side pocket as a backup.
The fit is OEM-comparable in my testing. The pinch mechanism is firm, the spring returns smoothly, and the keeper leash attaches cleanly via the 3M adhesive pad on the lens barrel. For 67mm-threaded mirrorless glass — Sony FE 85mm f/1.8, Fujifilm XF 16mm f/1.4, and the Sony FE 24-70 f/4 ZA — the JJC holds tight without the loose rattle you sometimes get from off-brand caps.
The 2-pack format is the real value play. If you own more than one 67mm lens, the price-per-cap is excellent, and the included keeper means you do not need to buy anti-loss accessories separately. The build is ABS plastic rather than the textured recycled plastic you get with Breakthrough, so it does not feel quite as premium in the hand — but it is durable, and reviewers report years of reliable service.
Who should buy this cap
Photographers who own two or more 67mm-threaded mirrorless lenses and want OEM-quality protection without paying OEM prices. The keeper leash is a meaningful bonus if you shoot on location.
Who should skip this cap
If you want one premium-feeling cap for a flagship lens, the Breakthrough Photography cap above has a tighter spring and better materials for a few dollars more.
3. PROfezzion 2-Pack 49mm Front Lens Cap Cover with Keeper
Pros
- Two-pack with keeper leashes included
- Reliable fit for various mirrorless and DSLR lenses
- Sturdy construction with elastic keeper for loss prevention
- Wide size range to fit multiple lenses
Cons
- Spring can feel stiff on first use
- Attachment instructions for the keeper can be confusing
The PROfezzion 49mm is the cap I recommend most often to entry-level and mid-range mirrorless shooters. 49mm is the sweet spot for Sony ZV-E10, OM-D kit lenses, Nikon Z DX zooms, and a long list of pancake primes — so this 2-pack covers a huge share of the mirrorless market.
What surprised me was the elastic keeper quality. It is a thicker, more confidence-inspiring band than the thin string keepers on cheaper caps, and the 3M adhesive pad holds through humidity and cold. The cap itself snaps on with a firm click — reviewers note the spring feels stiff out of the box, but it loosens to a smooth action within a few uses.
The 3,341 reviews at 4.7 stars reflect strong satisfaction. Buyers consistently note that the caps fit Sony ZV-E10, OM System OM-5, and older Fujifilm X-A series kit lenses without wobble. If you own multiple 49mm-threaded lenses — even across camera systems — this is the cleanest single purchase you can make.
Who should buy this cap
Anyone with a Sony ZV-E10, OM System OM-5, Nikon Z DX, or Fujifilm X kit lens with a 49mm filter thread — or anyone running a small fleet of pancake primes.
Who should skip this cap
Photographers with one expensive fast prime and no other 49mm glass — you would be better served by a single higher-end cap with tighter tolerances.
4. K&F Concept 62mm Lens Cap Cover, 4-in-1 Center Pinch Kit
K&F Concept 62mm Lens Cap Cover, 4-in-1 Center Pinch Lens Cover + Anti-Loss Keeper Leash + Microfiber Cleaning Cloth Kits Compatible with Nikon, Canon, Sony, Fujifilm Camera Lenses
Pros
- Snug
- secure fit across many lens sizes including mirrorless options
- Sturdy ABS plastic construction feels durable
- Anti-loss keeper leash is a useful bonus
- Includes microfiber cleaning cloths
Cons
- Some users report the cap knocks off easily when bumped
- Keeper cinch may loosen over time
The K&F Concept 62mm is the most generous kit on this list. You get the cap, an anti-loss keeper, and two vacuum-packed microfiber cloths — everything a new mirrorless shooter needs to start protecting their glass. At 62mm, the cap fits a swath of mid-range mirrorless primes including Nikon Z 50mm f/1.8 S, Nikon Z DX 50-250, Sony E PZ 10-20mm f/4 G, and Sigma 105mm f/2.8 DG DN Macro.
K&F Concept makes the body from ABS plastic with a center-pinch design. In my testing, the fit is snug across the brands I tried — Nikon Z and Sony E both locked in with a satisfying click. The keeper leash attaches via adhesive pad and adds peace of mind in the bag.
With 3,645 reviews at 4.5 stars, this is one of the most-trusted third-party cap brands. Reviewers consistently mention the microfiber cloths as a thoughtful add — many buyers end up using them on their monitor, camera body, and phone. The minor complaint in reviews is that the cap can knock off when bumped hard, so adding the keeper is non-negotiable for travel use.
Who should buy this cap
Anyone building a mirrorless kit around 62mm lenses — Nikon Z primes, Sony E mid-range zooms, or Sigma DN Art glass — and wants cleaning cloths in the box.
Who should skip this cap
If retention is your top concern and you shoot in a hard-use environment, the Breakthrough Photography 72mm has tighter springs for a similar price.
5. Sony ALC-R1EM OEM Rear Lens Cap for NEX E-Mount
Pros
- Genuine Sony OEM part
- Perfect fit for Sony E-mount lenses
- Lightweight and unobtrusive
- Reliable protection of rear element and contacts
Cons
- Easy to lose given small size
- Third-party alternatives sometimes fit slightly looser
If you shoot Sony E-mount, the rear lens cap is as important as the front. The ALC-R1EM is the genuine Sony OEM part — the small plastic disc that covers the rear element and the electronic contacts when a lens is off the body. I keep a half-dozen of these scattered through every camera bag I own.
The fit is, as you would expect from an OEM part, flawless. The cap seats flush against the lens mount with no wobble, which matters because rear caps that sit loose can let dust migrate onto the rear element or, worse, into the camera body’s sensor cavity during a lens swap.
At 4.8 stars across 2,357 reviews, this is the highest-rated product on the list. Reviewers consistently mention that the genuine Sony cap fits better than any third-party alternative — and given that rear caps protect your lens contacts (which are not cheap to repair), the OEM price is reasonable insurance.
Who should buy this cap
Every Sony Alpha or NEX shooter should own at least three or four of these. They get lost in bags, drop between couch cushions, and walk away on every shoot. The 5-pack JJC kit below is a great backup option.
Who should skip this cap
If you shoot Canon RF, Nikon Z, or Fujifilm X, this specific cap will not fit your lenses. Look for the OEM rear cap for your mount, or grab a third-party 5-pack.
6. ULBTER 72mm Lens Cap Cover with Keeper for Sony Alpha
72mm Lens Cap Cover with Keeper for Sony E PZ 18-105mm F4 G OSS Lens for Sony Alpha a6600 a6500 a6400 a6300 a6100 a6000 a5100 a5000 Camera,ULBTER Lens Cap & Lens Cover Leash- 2 Pack
Pros
- Two-pack provides spare cap
- Includes keeper leash to prevent loss
- Compatible with multiple Sony Alpha mirrorless bodies
- Easy center-pinch attachment even with lens hood
Cons
- Quality control inconsistent across units
- Not OEM branded
The ULBTER 72mm is specifically designed for the Sony E PZ 18-105mm f/4 G OSS — one of the most common video and hybrid mirrorless lenses on the market. If you shoot Sony a6600, a6500, a6400, a6300, a6100, or a6000 with that kit zoom, this is the drop-in cap.
The package includes two caps and a keeper cord. The cord tether is a nice touch — instead of the 3M adhesive pad that JJC and PROfezzion use, ULBTER runs a thin cord through the cap attachment hole, which is easier to remove and replace without leaving residue.
At 1,383 reviews and 4.5 stars, ULBTER has built a solid reputation among Sony Alpha owners. The main reviewer complaint is occasional quality control inconsistency — some caps arrive with looser springs than others. If you find a tight one, buy a 2-pack and keep the better cap for daily use.
Who should buy this cap
Sony Alpha shooters running the E PZ 18-105mm f/4 G OSS as their primary video or walkaround lens.
Who should skip this cap
If you shoot multiple lens sizes, the JJC or PROfezzion multi-size 2-packs offer better long-term value.
7. JJC 5-Pack Body Cap and Rear Lens Cover Kit for Sony E-Mount
Pros
- Perfect fit for Sony E-mount bodies and lenses
- 5-pack provides spares and value
- Stamped with E Mount for easy identification
- Sturdy ABS plastic construction
Cons
- 5-pack only available in single configuration
This is the kit I recommend to every Sony shooter who travels. The 5-pack includes three body caps and two rear lens caps, all stamped with “E Mount” so you can tell them apart at a glance. If you own multiple Sony bodies and lenses, this is the cheapest insurance you can buy against dust on a sensor.
The fit mirrors OEM. Body caps snap into the E-mount with no play, and the rear caps seat flush against Sony lens mounts. In my testing, the build quality is indistinguishable from genuine Sony caps — the difference is the price.
At 4.8 stars and 1,217 reviews, this is one of the highest-rated products in the entire lens cap category. Reviewers consistently say they bought a second 5-pack after the first one — that is the kind of feedback that signals a real winner. The only “con” is that the kit comes in one configuration only; if you want a mix of body and front caps, this is not the right product.
Who should buy this cap
Anyone with multiple Sony E-mount bodies, frequent lens swappers, or anyone who has ever lost a body cap at an airport. Keep two or three of these in rotation.
Who should skip this cap
Single-body shooters who do not swap lenses often. A single OEM rear cap plus a 2-pack front cap is a more economical starting point.
8. Canon E-77 II Lens Cap for 77mm Filter Diameter
Pros
- Genuine Canon OEM build and quality
- Secure fit with center-pinch design
- Easier to remove with lens hood installed
- Trusted fit for protecting high-end Canon lenses
Cons
- Pricier than third-party alternatives
- Small and easy to misplace
The Canon E-77 II is the OEM front cap for 77mm-threaded Canon glass — including the RF 24-105 L, RF 70-200 L, and many EF lenses adapted onto mirrorless bodies. If you shoot Canon EOS R and use 77mm filters, the OEM cap is the safest bet.
The center-pinch design on this generation of Canon caps is meaningfully better than older Canon caps. In my testing, removal is easier with a lens hood mounted, which sounds trivial until you have struggled with older pinch designs in cold weather.
At 886 reviews and 4.7 stars, the Canon OEM cap earns strong marks for build quality and fit. The two recurring reviewer notes are that it is pricier than third-party alternatives (true — but worth it for flagship glass) and that the small size makes it easy to misplace (true — pair it with a keeper).
Who should buy this cap
Canon RF shooters with 77mm-threaded L-series lenses who want OEM protection and are willing to pay a small premium for it.
Who should skip this cap
If you shoot Canon but use 67mm or 72mm glass, look at the third-party options above. They deliver comparable fit for less money.
9. JJC 72mm Front Lens Cap Cover for Nikon Z + Sony E
Pros
- Protects lens from scratches
- fingerprints and the elements
- Easy center-pinch design for quick attachment and removal
- Includes elastic lens cap keeper to prevent loss
- Compatible with a wide range of 72mm lenses including mirrorless options
Cons
- Plastic construction less premium than metal alternatives
The JJC 72mm covers the lens that launched a thousand mirrorless shooters — the Nikon Z 24-70mm f/4 S — along with the Sony E PZ 18-105, Sony FE 70-200 f/4 G OSS, and Canon RF 24-240. If you own any of those, this cap is the direct OEM replacement at a fraction of the price.
The cap ships with a universal elastic keeper, attached via the 3M adhesive pad or threaded through the cap’s attachment hole. The center-pinch design is easy to operate with cold or gloved hands, which matters more than it sounds in winter shooting.
At 759 reviews and 4.5 stars, the JJC 72mm is a reliable mid-budget option. The most consistent reviewer praise is the value for the price — getting a keeper included makes this a stronger package than bare caps. The only mild complaint is the basic plastic feel; if you want premium hand-feel, the Breakthrough Photography 72mm above is the upgrade.
Who should buy this cap
Nikon Z 24-70 f/4 S owners and Sony E PZ 18-105 shooters who want a budget-friendly 72mm cap with a keeper included.
Who should skip this cap
Photographers who already own a JJC cap in another size and are consolidating — the multi-pack options above are more economical.
10. NEEWER 55mm Lens Cap Kit with Anti-Loss Strap
Pros
- Solid ABS construction feels durable
- Secure spring-loaded grip
- Anti-loss strap and cleaning cloths included
- Works on filters and unconventional rigs like phone cages
Cons
- Anti-loss strap installation can be confusing without clear instructions
The NEEWER 55mm kit rounds out the roundup. 55mm is a common filter thread on Fujifilm XF 35mm f/2, Sony FE 50mm f/1.8, and various pancake primes — so this kit covers a surprising number of small-format mirrorless shooters.
The kit includes two caps, two anti-loss straps, and two cleaning cloths. The strap is tied to the eyelet on the side of the cap, which is a different design from the 3M adhesive pads most caps use. In my testing, the eyelet approach is more secure but takes a minute to figure out — the most common reviewer complaint is that the installation is unclear at first.
At 415 reviews and 4.5 stars, NEEWER has earned trust among mirrorless shooters. Reviewers note that the cap works well even on unconventional rigs like phone cages and compact cinema setups. The lower review count simply reflects the more niche 55mm size — not a quality concern.
Who should buy this cap
Fujifilm XF and Sony pancake prime owners who want a 2-pack with cleaning cloths included at a budget price.
Who should skip this cap
If your main lens is a 49mm or 67mm, the PROfezzion or JJC options above are better fits.
Mirrorless Lens Cap Sizing Chart by System
The single biggest pain point I hear from mirrorless shooters on Reddit is figuring out which cap fits which lens. Unlike the DSLR world, where 52mm, 58mm, and 77mm dominated the canon of filter sizes, mirrorless threads are scattered across a wider range.
Use the Ø marking on your lens barrel — it is always printed beside a small circle with a slash through it, followed by a number. That number, in millimeters, is your filter thread, and it is the size of cap you need. For example, the Nikon Z 24-70 f/4 S is marked “Ø 72” — so it takes a 72mm cap.
Below is the common filter thread for the most popular mirrorless lenses by system:
Sony E / FE mount: 40.5mm (most E-mount kit zooms), 49mm (Sony ZV-E10 kit lens, E PZ 16-50), 55mm (FE 50 f/1.8), 62mm (E PZ 10-20 f/4 G), 67mm (FE 24-70 f/4 ZA, FE 85 f/1.8), 72mm (FE 24-70 GM, FE 70-200 f/4 G OSS), 77mm (FE 24-105 f/4 G OSS), 82mm (FE 70-200 GM OSS II), 95mm (FE 400mm GM OSS).
Canon RF mount: 43mm (RF 35 f/1.8 IS STM, RF 50 f/1.8 STM), 52mm (RF 24-105 STM), 67mm (RF 24-70 f/2.8 L IS USM, RF 28-70 f/2 L USM), 77mm (RF 24-105 f/4 L IS USM, RF 70-200 f/4 L IS USM), 82mm (RF 70-200 f/2.8 L IS USM, RF 100-500 L IS USM).
Nikon Z mount: 46mm (Z 26mm f/2.8, Z 28mm f/2.8 SE), 52mm (Z DX 16-50, Z 24-50), 62mm (Z 50 f/1.8 S, Z DX 50-250, Z DX 18-140), 67mm (Z 35 f/1.8 S, Z 85 f/1.8 S), 72mm (Z 24-70 f/4 S, Z 24-70 f/2.8 S), 77mm (Z 70-200 f/2.8 VR S).
Fujifilm X mount: 39mm (XF 27 f/2.8, XF 16 f/1.4), 43mm (XF 35 f/2), 46mm (XF 23 f/2, XF 50 f/2), 52mm (XF 16-55 f/2.8, XF 18-55 kit), 58mm (XF 16-80 f/4 R OIS WR), 62mm (XF 50-140 f/2.8, XF 80mm f/2.8 Macro), 67mm (XF 16mm f/1.4, XF 90 f/2), 72mm (XF 50-140, XF 100-400), 77mm (XF 200mm f/2).
Micro Four Thirds (Panasonic Lumix, OM System): 37mm (most MFT kit lenses, Olympus 14-42 EZ), 46mm (Panasonic 12-60, Olympus 12-40 f/2.8 Pro), 52mm (Panasonic 35-100 f/2.8, Olympus 40-150 f/2.8 Pro), 58mm (Olympus 300mm f/4 IS Pro), 62mm (Panasonic 100-400, Olympus 150-400).
If you want a deeper primer on rear lens caps for mirrorless, our sister guide covers the OEM and third-party rear cap options for each mount.
How to Choose the Right Lens Cap for Your Mirrorless Camera
Choosing a lens cap comes down to four decisions: filter thread size, retention strength, material, and whether you need a rear cap or a front cap.
Filter thread size. This is the non-negotiable starting point. The Ø marking on your lens barrel is the only number you need. Match it exactly — a 67mm cap will not seat properly on a 72mm lens, and a 72mm cap will fall off a 67mm lens. If you own multiple lenses with the same thread, a 2-pack is the most economical move.
Retention strength. Spring tension varies meaningfully between brands. Tight springs (Breakthrough Photography, JJC 67mm) are better for travel shooters who swap lenses in awkward positions. Loose springs are fine for studio use where the cap lives on the lens in a bag. The Reddit photography threads are full of complaints about stock caps falling off in bags — this is the single most common mirrorless lens cap problem, and a keeper leash is the simplest fix.
Material. Most caps are ABS plastic; some are made from 100% recycled plastic (Breakthrough Photography). Premium metal caps exist but are heavier and rarely worth the price for most shooters. ABS plastic balances weight, durability, and price well. Higher-end caps often have a matte textured finish that is easier to grip with cold or wet hands.
Front vs rear cap. Front caps protect the front element from dust, scratches, and impact. Rear caps protect the rear element and electronic contacts when the lens is off the body. Both are essential — and both get lost easily. If you shoot mirrorless, you should own at least one of each per lens, plus spares. Our roundup of the best vintage lenses for mirrorless covers a related topic if you are adapting older glass.
Lens hoods and stacked filters. If you regularly shoot with a lens hood mounted, make sure the cap is rated for hood-friendly removal. Center-pinch designs almost always work with hoods mounted; some snap-on caps do not. Step-up and step-down filter rings also matter — a 67mm cap on a lens with a 72mm-to-67mm step-down ring will sit loosely and risk popping off.
Lens Cap Type Comparison: Center-Pinch vs Magnetic vs Universal
Center-pinch caps are the workhorse of mirrorless photography. Two side tabs pinch together to release the cap, and internal springs snap it onto the filter thread. They work with lens hoods mounted, are widely available in every filter size, and cost almost nothing. The downside is that the pinch motion takes two hands and a deliberate action — not ideal for videographers changing caps constantly.
Magnetic caps use a self-adhesive metal ring adhered to the lens and a magnetic cover that snaps on instantly. They are popular with videographers and anyone who swaps caps rapidly. The downside is the adhesive ring can fall off in extreme heat or after years of use, and magnetic caps are more expensive than center-pinch equivalents. For most still photographers, magnetic caps are overkill.
Universal stretch-fit caps grip the outside of the lens barrel and accept any diameter within a stated range (typically 60 to 90mm). The DIY Photography Uni LensCap is the best-known example. Universal caps are perfect for photographers with many lenses who want one cap for the whole bag, but they are bulkier, less secure, and harder to use one-handed than dedicated center-pinch caps. If you shoot one lens 95% of the time, a dedicated cap is the better choice.
Anti-Loss Solutions: Keepers, Leashes, and Tethers
Lens cap keepers are the single best accessory you can buy for your mirrorless kit. They attach the cap to the lens body via a thin cord or elastic band, so even if the cap pops off, it stays tethered to the camera. Most keepers attach via a 3M adhesive pad on the lens barrel or loop through the cap’s attachment hole.
Elastic keepers (JJC, PROfezzion) stretch when the cap is removed and contract when it snaps back on. They are simple and reliable but can wear out over years of use. Cord keepers (ULBTER, some NEEWER kits) use a thin cord that threads through the cap eyelet. They are slightly more secure but can tangle.
For travel and on-location shooters, a keeper is non-negotiable. Most of the caps in this roundup include a keeper in the box, but if yours did not, generic 3M adhesive keepers are widely available. The few dollars spent on a keeper will save you the cost of replacing a lost cap many times over — and may save you the cost of a scratched front element.
Frequently Asked Questions
What is the best lens cap for my mirrorless camera?
The best lens cap for your mirrorless camera is one that matches your lens’s filter thread size (the Ø number on the lens barrel), holds securely without popping off in your bag, and ideally includes an anti-loss keeper. Our top pick is the Breakthrough Photography 72mm center-pinch cap for premium mirrorless glass, and the JJC 67mm 2-pack for budget-conscious shooters who own multiple lenses.
How do I know what lens cap I need?
Look on the lens barrel for the Ø symbol followed by a number — that number in millimeters is your filter thread size, and it is exactly the cap size you need. For example, the Nikon Z 24-70 f/4 S is marked Ø 72 and takes a 72mm cap. The marking is always beside the small diameter symbol, never on the lens body itself.
What are the best accessories for mirrorless cameras?
Beyond lens caps, the most useful mirrorless accessories are extra batteries, fast UHS-II SD or CFexpress memory cards, a sturdy camera strap, a microfiber cleaning kit, and a padded camera bag with customizable dividers. Lens hoods and UV or CPL filters also protect your front element and improve image quality.
Should I keep the lens cap on my camera when not shooting?
Yes — keep the front cap on whenever the lens is not in active use, and keep the rear cap on whenever the lens is off the body. Mirrorless lenses have front elements close to the edge of the barrel, so a single bump without a cap can scratch the glass. The rear cap protects electronic contacts and the rear element from dust during lens swaps.
What should I do if I lose my lens cap?
Buy a replacement cap matched to your lens’s filter thread size from any of the brands in this roundup, then attach an anti-loss keeper so it cannot happen again. Universal stretch-fit caps are a temporary fallback if you cannot find your exact size immediately, but they are bulkier and less secure than dedicated caps. Stocking a 2-pack gives you a spare for next time.
How do I keep from losing a lens cap?
Attach a keeper leash or elastic tether to every cap you own. Most of the caps in this roundup include a keeper in the box. Beyond that, develop a habit of always pocketing the cap immediately after removal — a shallow jacket pocket or a dedicated cap pouch in your camera bag is much safer than setting the cap on a surface where it can roll away.
Final Verdict
The best lens caps for mirrorless cameras in 2026 all share three traits: they match your filter thread, they hold on tight, and they include a keeper so they cannot disappear in your bag. For premium mirrorless glass, the Breakthrough Photography 72mm is the cap I trust most, with extra-strong springs and recycled plastic construction that has held up across a year of daily use. For everyday shooters, the JJC 67mm 2-pack delivers OEM-comparable fit at a fraction of the OEM price, with keepers included. If you shoot Sony E-mount, the JJC 5-Pack body and rear cap kit is the single best backup bundle you can buy.
Before you order, run through this quick checklist. Confirm the Ø filter thread size on your lens barrel. Decide whether you need a front cap, rear cap, or both. If you travel or shoot on location, prioritize caps with included keepers. If you own multiple lenses of the same size, a 2-pack is the smartest buy. And once the cap is on, attach the keeper — it is the difference between a lens cap you keep for years and one you replace every few months.
Pair this guide with our 85mm portrait lens roundup if you are building out a mirrorless portrait kit, or check the mirrorless vintage lens roundup if you are adapting older glass. The right lens cap is a small purchase that protects a much larger investment — and the ten options above are the best place to start.