The 28.5mm Push-On Lens Cap from Schneider is a simple, soft plastic slip-on style cap designed to protect the front or rear elements of a lens when not in use. The cap fits lenses that have a front or rear ring with an outside diameter of 28.5mm; this size differs from the threaded filter ring diameter of a lens.

Soft Plastic, Slip-On Design    For Lenses with 28.5mm Outside Diameter    Protects Lens Elements When Not in Use

Related Questions and Answers

Q: 1. What is the angle of view?

A: I believe it is 61.93 degrees.

Q: 2. Does this lens have a metal lens mount?

A: The Sony E 20mm f/2.8 Lens has a metal lens mount.

Q: 3. Does it work for Sony 300mm Prime? Im sure others are here wonderin....

A: The Don Zeck C3 Lens Cap for the Canon 200mm f/2.0 IS, 300mm f/2.8 IS, 400mm f/4 DO IS is incompatible with the Sony FE 300mm f/2.8 GM OSS Lens (Sony E). Don Zeck does make the Don Zeck S40 Lens Cap for the Sony 400mm f/2.8 GM Lens, BH #DOS40, and the Don Zeck S60 Lens Cap for the Sony 600mm f/4.0 GM OSS Lens, BH #DOS60.

Q: 4. Is this lens weather sealed?

A: No, the Leica Summicron-M 50mm f/2 Lens is not weather sealed.

Q: 5. Will there be a lens hood available in the future? The lens appears to not have any mean to attach one...

A: At this time I do not see any hoods that will work with out giving some vignette. And Hasselblad has not as of today given information of making one.

Q: 6. Does it work with a full-frame camera?

A: Yes, it works on all M-Mount cameras, both film (Voigtlanders, Leica M7 or similar) and digital (Leica M9, M240, etc). It also works with adaptors on other mounts, I've tried with the Sony E-mount with Full Frame A7-series, and no problems. I don't know if they work with adapter in DSLR cameras due the flange distance to the sensor.

Q: 7. Will this fit Sony 14mm f1.8?

A: No, Sigma LC954-01 Lens Cap Cover for 14mm f/1.8 DG HSM Art Lens won't fit Sony FE 14mm f/1.8 GM Lens. This cap is design for Sigma 14mm f/1.8 DG HSM Art Lens. The diameter is 96mm, your Sony lens has a diameter of 83mm.

Q: 8. Does pairing this lens with a Leica CL provide for autofocus?

A: This is a manual focus lens.

Q: 9. Is this lens OSS/stabilized?

A: No, it does not.

Q: 10. Would this work on a Sony NEX 3N? Also, how does it compare to the SEL35F18?

A: Just to correct: better check what camera you have. The Nex 3 3c etc. are APS C cameras, not four thirds; there was a 5n which is a 16megapixel aps c camera. The lens will fit all of these cameras, but the APS C camera sensors are only half the size of the image the lens is designed to produce so a lot of the image is wasted. The Sony Zeiss 24mm f1.8 is a wonderful little lens, designed for the APS- Emounts. I have it and love it. But remember as you figure the field of view, that an APS C camera gets coverage out of a lens comparable to a full frame camera with a focal length of 1.5 more. i.e. a 24 mm aps c lens has the same field of view as a 36 mm full frame.