These lenses meet the standards for our company lenses. However, the drive sound may be heard to some degree, depending on the combination of the zoom speed settings on the camera and on the lens. Check the following to reduce the drive sound.
- Slow the zoom speed.
- Use an external microphone.
NOTE: An external microphone is placed at a greater distance from the lens thus the drive sound can be reduced considerably.
- Test record before the actual use.