This Teradek Pre-Marked Focus Ring 9.8' Metricfrom Teradek Pre-Marked Focus Ring 9.8' Metricfeatures metric measurements and is designed for use with the CTRL.1 lens controller unit for automatic calibration and RT lens mapping. It supports a minimum focus distance of 9.8' (3m). The pre-marked ring saves calibration time when swapping out lenses.

For CTRL.1 Lens Controller Unit    RT Lens Mapping    9.8' Minimum Focus    Markings in Metric Measurements

Auto-calibrate lenses to pre-marked focus rings

Save time on set from manually calibrating after every lens swap

Related Questions and Answers

Q: 1. Will this work with the ronin rsc2 focus motor? seeing a lot about the tilta gears not lining up nicely

A: The gearing present on the SmallRig Seamless Focus Gear Ring (75 to 77mm) should not have an issue with the use of the DJI Ronin Focus Motor for RS 2 and RSC 2 on the DJI RSC 2 Gimbal Stabilizer.

Q: 2. What is the correct size for the Sony FE 24-105mm f/4 G OSS Lens (it is listed incorrectly - I know because I purchased 2 and they are waaay too small)?

A: You should use the Tilta Seamless Focus Gear Ring (81 to 83mm).

Q: 3. I have a Sigma 18-50mm 2.8 lens, what would be the correct size for this lens?

A: The Tilta Seamless Focus Gear Ring (59 to 61mm) is the appropriate ring for the Sigma 18-50mm 2.8 lens.

Q: 4. Which one fits the new Sony 24-70 f2.8 mk ii?

A: Yes, the lens falls between 66 to 68mm and will work with the focus gear.

Q: 5. What is the correct size for the focus ring of the Sony 35mm f1.4 GM lens?

A: The 75 to 77mm illustrated in your link is the correct focus ring size.

Q: 6. What is the correct size for the Sony FE 50mm f/1.2 GM Lens focus ring?

A: You should use the 81 to 83mm Tilta Seamless Focus Gear Ring.

Q: 7. Are these compatible with the Arri SXU-1 (Single Axis Unit)?

A: Yes it is. This can be used with B&H # ARSXU1 as well.

Q: 8. will this 75-77 gear ring be compatible with the Tamron 70-200 G2 lense? Or should I look for the next size up?

A: The Tamron 70-200mm G2 lens has not been tested for gear size. Please measure your lens for the correct SmallRig Seamless Focus Gear Ring size. Please note this ruler should work with both Smallrig, and Tilta Seamless gear rings: https://bit.ly/4317M0x

Q: 9. What's the zoom ring size for rf 15-35 and rf 70-200?

A: Unfortunately, The new Canon RF lens models have not yet been tested by Tilta. Tilta provides the following ruler to help you measure your lenses for their Seamless rings. https://bit.ly/3oUrrgH

Q: 10. Will this fit the focus ring on Zeiss Milvus 25mm f1.4 Distagon EF?

A: Yes, the Tilta Seamless Focus Gear Ring (81 to 83mm) fits in the focus ring of the ZEISS Milvus 25mm f/1.4 ZE Lens for Canon EF which has a focus ring diameter of 82mm.