# Setup camera for slice view.
**URL:** https://discourse.vtk.org/t/setup-camera-for-slice-view/13394
**Category:** Web
**Created:** [February 26, 2024, 9:17pm UTC](https://discourse.vtk.org/t/setup-camera-for-slice-view/13394 "2024-02-26T21:17:59Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@burak94t](https://discourse.vtk.org/u/burak94t)
#### Post date: [February 26, 2024, 9:17pm UTC](https://discourse.vtk.org/t/setup-camera-for-slice-view/13394/1 "2024-02-26T21:17:59Z")
I’m trying to use the code from the paintwidget example, but when I try different dicoms, slices are upside-down sometimes.
How we should setup camera’s viewUp or directionOfProjection, etc from the imageData?
Thanks a lot.
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### Author:  [@finetjul](https://discourse.vtk.org/u/finetjul)
#### Post date: [February 27, 2024, 7:21am UTC](https://discourse.vtk.org/t/setup-camera-for-slice-view/13394/2 "2024-02-27T07:21:38Z")
you can modify the imagedata `direction`. However I suggest you preserve the original direction and modify the camera instead. There are functions such as `setViewUp`, `setPosition`, `setFocalPoint`
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### Author:  [@burak94t](https://discourse.vtk.org/u/burak94t)
#### Post date: [February 27, 2024, 4:02pm UTC](https://discourse.vtk.org/t/setup-camera-for-slice-view/13394/3 "2024-02-27T16:02:30Z")
Thanks but how I can calculate the values for the camera?
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### Author:  [@finetjul](https://discourse.vtk.org/u/finetjul)
#### Post date: [February 27, 2024, 4:49pm UTC](https://discourse.vtk.org/t/setup-camera-for-slice-view/13394/4 "2024-02-27T16:49:22Z")
you need to look at your imagedata origin, dimensions, scaling and orientation.