I need zoom factor instead of mm

Aug 16, 2014 at 5:43 AM
if i zoom with scroll or other keys position of camera will change which is linear changing
I need zoom factor is there any built in zoom factor or something which i can use?
there is some explanation about zoom factor and zoom in mm in this link:
Aug 18, 2014 at 11:22 AM
This is an interesting idea. Do I understand correctly - zooming should be done linearly in angle of view (fov) or focal length?
I have added the feature in the issue tracker: https://helixtoolkit.codeplex.com/workitem/10068
Aug 20, 2014 at 4:00 PM