These matte black 4-hole Skeleton 30mm Riflescope Rings from Weaver feature no-strip/slip Torx mounting screws. The rings accommodate scopes with a 30mm main tube and provide a saddle height of 0.250".

Saddle Height: 0.250"    Aircraft Aluminum, Matte Black Finish    "Cross-Lock" Mounting Design    No Strip / Slip Torx Screws    Made in USA

Related Questions and Answers

Q: 1. Does this have the focus problems of the 35mm? I have a Sigma 35mm Art, and the focus is completely unreliable, despite repeated calibration and servicing. When it's on, it's magic, but it's completely unreliable.

A: We have not received any negative feedback regarding focus issues with this particular lens.

Q: 2. Does this fit the Nikon Z Mount version of lens?

A: Yes, the Sigma Lens Hood for 30mm f/1.4 DC DN Contemporary Lens fits onto the Sigma 30mm f/1.4 DC DN Contemporary Lens (Nikon Z).

Q: 3. Does this lens have image stabilization?

A: no. At least no need.

Q: 4. Is this lens compatible with the Canon C-100?

A: It should be, the EF mounts generally work well across the Canon family, however your auto-focus capabilities might not work as fluidly as the DSLR line of cameras.

Q: 5. Is this a bad choice if you're more into landscapes than portraits?

A: wider for landscapes but great little lens and very pleased with the few pictures I've used it for so far.

Q: 6. Is this compatible with Nikon D750? What is it's focal length on full frame Nikon?

A: The lens will work on a Nikon D750 as a 30mm. The lens is made for Crop Sensor cameras and is close to a 50mm perspective on those cameras. I would not recommend this lens for a D750 since it is a full frame camera. You are better off with Nikon 35mm 1.8G or Sigma 35mm 1.4 Art lens.

Q: 7. Would the field of view on a crop frame camera be different than a full frame 30 mm lense on a crop frame camera?

A: This lens is designed for a crop sensor camera, but you still need to multiply the focal length with the crop factor (1.6x) to figure out the 35mm equivalent focal length. So with that in mind, the effective focal length of the Sigma 30mm f/1.4 DC HSM Art Lens for Canon EF is 48mm.

Q: 8. Will this fit my Nikon D90 camera?

A: Yes, the Sigma 30mm f/1.4 is compatible with the Nikon D90.

Q: 9. More specifically, will it work with my 7D Mark II?

A: While I do not see the beginning of your inquiry (all I see above is More specifically, will it work with my 7D Mark II? ), if you are referring to the Olympus M.Zuiko Digital ED 30mm f/3.5 Macro Lens (B&H # OL3035ED) listed above, then no, this lens is not compatible for use on the Canon EOS 7D Mark II DSLR camera, nor is there a lens adapter to connect the lens to the Canon 7D Mark II DSLR camera.

Q: 10. I am a beginner. Is the lens cap included with the lens? Do I need to buy a separate cap?

A: Both front and rear lens caps are included.