Model No: AA05 Metal Cap Sets
Metal Filter Stack Cap Sets for Pentax Sony Leica Zeiss Fujifilm Lens
This Filter case protect filters from dust and scratches while they are not being used
Simply screw the filters together, then screw these stack caps on the top and bottom.
Great for storing filters.
Material: Aluminum.
Satin smooth finishing
Simply screw the filters together, then screw these stack caps on the top and bottom.
Great for storing filters.
Material: Aluminum.
Satin smooth finishing
Quantity :
Filters are essential tools for creative photography, but storing them safely between shoots is a constant headache. The plastic pouches they come with wear out, and generic filter cases are bulky.
What if we could protect our filters in a way that's durable, organized, and as sleek as the gear itself? Say hello to our series of Metal Lens Filter Stack Caps—the simple, elegant solution that turns a standard filter into its own protective case.
Think of these as sturdy, metal “ caps” for your filters. Instead of leaving your valuable 77mm ND filter naked in your bag, you screw one of these metal caps onto its front and back threads. Instantly, your filter is encased in a rugged, shock-absorbing metal shell that guards against dust, moisture, and impacts. It’s the perfect home for your glass, keeping your collection neat, safe, and ready to go.
Find Your Perfect Fit: Quick Size Guide
Here’s the complete list to help you match your gear. Simply find your filter’s thread size:
| P/N | Description | Compatible Device |
|---|---|---|
| NP3392 | Metal Lens Filter Stack Cap for 34mm | 34mm Filter |
| NP3360 | Metal Lens Filter Stack Cap for 37mm | 37mm Filter |
| NP3337 | Metal Cap Set for M39; Black | 39mm Filter |
| NP3338 | Metal Cap Set for M39; Silver | 39mm Filter |
| NP3314 | Metal Lens Filter Stack Cap for 40.5mm | 40.5mm Filter |
| NP3339 | Metal Cap Set for M42; Black | 42mm Filter |
| NP3340 | Metal Cap Set for M42; Silver | 42mm Filter |
| NP3319 | Metal Lens Filter Stack Cap for 43mm | 43mm Filter |
| NP3370 | Metal Lens Filter Stack Cap for 46mm | 46mm Filter |
| NP3301 | Metal Lens Filter Stack Cap for 49mm | 49mm Filter |
| NP3302 | Metal Lens Filter Stack Cap for 52mm | 52mm Filter |
| NP3303 | Metal Lens Filter Stack Cap for 55mm | 55mm Filter |
| NP3304 | Metal Lens Filter Stack Cap for 58mm | 58mm Filter |
| NP3305 | Metal Lens Filter Stack Cap for 62mm | 62mm Filter |
| NP3306 | Metal Lens Filter Stack Cap for 67mm | 67mm Filter |
| NP3307 | Metal Lens Filter Stack Cap for 72mm | 72mm Filter |
| NP3308 | Metal Lens Filter Stack Cap for 77mm | 77mm Filter |
| NP3309 | Metal Lens Filter Stack Cap for 82mm | 82mm Filter |
| NP3317 | Metal Lens Filter Stack Cap for 86mm | 86mm Filter |
| NP3318 | Metal Lens Filter Stack Cap for 95mm | 95mm Filter |
But What exactly is a “Filter Stack Cap,” and how do I use it?
It’s super simple! A Filter Stack Cap is a durable metal cap that screws onto the front threads of your filter. Most of our models (like NP3301 for 49mm) are designed to attach directly to a single filter, transforming it into a sealed, protected unit. For special thread types like M39 or M42, we offer complete Metal Cap Sets (like NP3339) that include both a front and rear cap, creating a perfect little protective capsule for your filter.
It’s super simple! A Filter Stack Cap is a durable metal cap that screws onto the front threads of your filter. Most of our models (like NP3301 for 49mm) are designed to attach directly to a single filter, transforming it into a sealed, protected unit. For special thread types like M39 or M42, we offer complete Metal Cap Sets (like NP3339) that include both a front and rear cap, creating a perfect little protective capsule for your filter.
Why metal? Aren’t plastic caps cheaper?
Absolutely, plastic is cheaper—but it’s also far less protective. Our machined aluminum caps offer superior crush resistance and durability. If your camera bag gets squeezed in an overhead compartment or takes a bump, metal provides a rigid shield that plastic simply can’t match. It also feels premium, protects the filter’s delicate front and rear glass surfaces, and won’t crack or warp over time.
Absolutely, plastic is cheaper—but it’s also far less protective. Our machined aluminum caps offer superior crush resistance and durability. If your camera bag gets squeezed in an overhead compartment or takes a bump, metal provides a rigid shield that plastic simply can’t match. It also feels premium, protects the filter’s delicate front and rear glass surfaces, and won’t crack or warp over time.
If we have filters in many sizes. Is there any one for it?
We’ve got them covered! Our range is one of the most comprehensive available. Whether you’re using a small 34mm filter on a compact lens or a large 95mm filter for a professional wide-angle, we have a cap for it. Check your filter’s thread size (it’s always marked on the rim, e.g., “Ø77mm”) and find its match in our list below.
We’ve got them covered! Our range is one of the most comprehensive available. Whether you’re using a small 34mm filter on a compact lens or a large 95mm filter for a professional wide-angle, we have a cap for it. Check your filter’s thread size (it’s always marked on the rim, e.g., “Ø77mm”) and find its match in our list below.
Can we stack multiple filters with these caps?
While the primary purpose is protection and storage, these caps are designed with standard filter threads. This means you can potentially screw a filter with a Stack Cap attached onto the front of another filter for transport. However, for actual shooting, it’s best to remove the protective cap to avoid vignetting (dark corners) and maintain optimal image quality.
While the primary purpose is protection and storage, these caps are designed with standard filter threads. This means you can potentially screw a filter with a Stack Cap attached onto the front of another filter for transport. However, for actual shooting, it’s best to remove the protective cap to avoid vignetting (dark corners) and maintain optimal image quality.
Will these fit any brand of filter?
Yes! As long as the diameter matches, these caps are universally compatible. They work with filters from NiSi, Hoya, Tiffen, B+W, LingoFoto, and any other brand that uses standard metric front filter threads. The M39 and M42 sets are perfect for specific vintage or specialized filter threads.
Yes! As long as the diameter matches, these caps are universally compatible. They work with filters from NiSi, Hoya, Tiffen, B+W, LingoFoto, and any other brand that uses standard metric front filter threads. The M39 and M42 sets are perfect for specific vintage or specialized filter threads.
If you invest in high-quality filters, protecting that investment is a no-brainer. These caps are a small price to pay for peace of mind. They also help organize your bag—no more digging through loose pouches!
