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 0.490".

Saddle Height: 0.490"    Aircraft Aluminum, Matte Black Finish    "Cross-Lock" Mounting Design    No Strip / Slip Torx Screws    Made in USA

Related Questions and Answers

Q: 1. Full frame

A: The Sigma 30mm f/1.4 DC HSM Art Lens for Canon EF is for crop frame cameras. It will fit a full frame camera but you might see vignetting on the edges unless you set the camera to crop mode.

Q: 2. I have sort of a general question. I'm a strictly natural light photographer. A fellow photographer friend said she would be worried that this wouldn't let in as much light as, say the 35mm Art, simply because the area of the front glass is not as large. I had never even thought of this consideration. Thoughts?

A: I have found that this lens works awesome in natural light. Outdoor face type portraits come out amazing.

Q: 3. Is there a compatible lens hood for this lens?

A: YesGeneral Brand 46mm Diameter Collapsible Rubber Lens HoodB&H #GBLH46 Fits Price $4.95I have one That I use Interchangeably with my M Zukio 17mm f1.8 Lens

Q: 4. Does it fit to Sigma 30mm F1.4 DC HSM Art Lens?

A: It does not, this is for the Contemporary model. For the Art model you will need BH #SILH68601. BH #SILH68601 is the Sigma Lens Hood for 30mm f/1.4 Art DC HSM Lens. https://bhpho.to/2YkBctE

Q: 5. What size is the replacement lens cap for the M.Zuiko 30mm f3.5 macro lens?

A: The Olympus M.Zuiko Digital ED 30mm f/3.5 Macro Lens adapts to all 46mm lens caps. Please review the following caps that we have available https://www.bhphotovideo.com/c/search?q=olympus%2046mm%20lens%20cap&sts=ma

Q: 6. Will this lens fit on the Canon 77D?

A: Yes.

Q: 7. Is the focusing faster and sharper than the Olympus 12-50 mm macro zoom?

A: Yes this lens has Olympus new MSC autofocus system provides quick, quiet, and precise focusing performance to benefit both still photo shooting and movie recording. It is definitely a lot faster in auto focus compare to Olympus kit lens M.ZUIKO ED 12-50mm f/3.5-6.3 EZ Micro 4/3 .

Q: 8. Are there any issues using the lens with the Lumix GX-85?

A: No, there are not. The Olympus M.Zuiko Digital ED 30mm f/3.5 Macro Lens would be compatible for use with the Panasonic Lumix DMC-GX85 Mirrorless Micro Four Thirds Digital Camera.

Q: 9. Can i use this lense on Canon 1300d

A: Yes, absolutely. I believe that the Sigma 18-35 f/1.8 HSM Art lens has better contrast and sharpness, but the 30 f/1.8 is a good and inexpensive choice for APS-C sensors. Have used it for years.

Q: 10. Just would like you to confirm that this lens fit a D5100?

A: Yes, this is a Sigma HSM type lens which has the required built-in motor to autofocus with the D5100 and similar Nikon cameras.