The Kaiser 40mm Push-On Lens Cap is designed to fit any camera, enlarger lens, binocular, tele-, micro-, or spotting scope lens. It is for lenses having a front or rear ring with an outside diameter of 40mm. The cap should fit snuggly but not so tight that it is hard to remove.
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Key Features
- Designed for 40mm Outer Diameter
- Push-On Design
- Protects Front Element of Lens
- Spare or Replacement Item
The Kaiser 40mm Push-On Lens Cap is designed to fit any camera, enlarger lens, binocular, tele-, micro-, or spotting scope lens. It is for lenses having a front or rear ring with an outside diameter of 40mm. The cap should fit snuggly but not so tight that it is hard to remove.
More DetailsKaiser Push-On Lens Cap Overview
Kaiser Push-On Lens Cap Specs
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Packaging Info
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Kaiser Push-On Lens Cap Reviews
51mm Lens Cap
By George
Rated 5 out of 5
Date: 2026-02-26
I ordered it for a new scope I had gotten, and this size is hard to find. It fits the objective lenses as it should and looks to be of good material. I am very happy with the cap.
Binoculars caps
By John
Rated 5 out of 5
Date: 2025-08-11
Perfect fit and delivered in a timely manner.
See any errors on this page?
does it fit a Pentax da 40mm lens?
does it fit a Pentax da 40mm lens?
I don't know about Pentax lenses. I use it to cover my Leica 50mm Summicron and my 135mm Elmar lenses. Both have 39 mm B&W clear filters attached. The caps fit nicely over the filters that have a 40mm OD but a 39mm threat. The caps fit on both lenses and, therefore, should cover any lens that has a similar outside diameter.
Date published: 2020-11-04
will this fit a rollei 35s?
will this fit a rollei 35s?
This Kaiser 40mm Push-On Lens Cap is not compatible with the Rollei 35S.
Date published: 2022-02-01
Does anyone happen to know whether this Kaiser ...
Does anyone happen to know whether this Kaiser 85mm Push-On Lens Cap will work well as a lens cap for the Tiffen 82mm variable ND filter?
Kaiser makes a 82mm Tiffen 82mm variable ND filter version for use with 82mm filters.
Date published: 2019-06-13
Will this cap fit a Sony RX100M7?
Will this cap fit a Sony RX100M7?
No
Date published: 2020-09-01
question
How well this Kaiser push on cap fits on a B+W CPL Slim MRC filter 77mm. Any other suggestions besides the original B+W (Schneider) push onThank you
I really like these lens covers, as an alternative to push-on caps:OP/TECH USA Hood Hat, SmallB&H # OPHHS35B Mfr # 8001112This will be the correct size for a 77mm.
Date published: 2022-05-01
Can you please verify if this cap will fit on a ...
Can you please verify if this cap will fit on a 80mm hasselblad lenses?
If the focal length is 80mm, it doesn't mean the cap/filter size is 80mm. It depends on which version of 80mm lens it is. Typically a push on lens cap should be about 2-3mm larger than that of the filter size. For example is the lens has a 77mm filter thread, a 80mm push on cap should work. The older Hassy lenses took Bay 60 filters, that would be about 60mm in diameter , so a 63mm push on cap would probably work.
Date published: 2019-09-25
Will it fit OK with a step up ring? I'm planning ...
Will it fit OK with a step up ring? I'm planning to use these with some lenses that have step-up rings to 82mm.
Yes - I use these85mm caps on 82mm step up rings and also on a few lenses with 82mm filter threads.
Date published: 2021-12-02
can this be used on a fujifilm fujinon 135mm f5.6 ...
can this be used on a fujifilm fujinon 135mm f5.6 rear lens?
I completely concur with Gaston. The best way is to measure the rear mount and even then i would order multiple sizes just to make sure you get the correct one and then just return the others that do not fit perfectly.
Date published: 2019-11-15