# Is there a way to set min/max zoom (parallelScales) for mouseManipulators?

**URL:** https://discourse.vtk.org/t/is-there-a-way-to-set-min-max-zoom-parallelscales-for-mousemanipulators/11517
**Category:** Support
**Created:** [May 22, 2023, 3:55pm UTC](https://discourse.vtk.org/t/is-there-a-way-to-set-min-max-zoom-parallelscales-for-mousemanipulators/11517 "2023-05-22T15:55:33Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![DavidO](https://discourse.vtk.org/user_avatar/discourse.vtk.org/davido/32/7120_2.png) [@DavidO](https://discourse.vtk.org/u/DavidO)
#### Post date: [May 22, 2023, 3:55pm UTC](https://discourse.vtk.org/t/is-there-a-way-to-set-min-max-zoom-parallelscales-for-mousemanipulators/11517/1 "2023-05-22T15:55:33Z")

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Sorry for the quick second post, but a separate question so makes sense for a separate thread.

I’d like to cap the zoomLevels permitted by vtkMouseCameraTrackballZoomToMouseManipulator in terms of a min and a max. Is this possible?

Thanks again!