How to get the camera Focal Length

[pfk]

Hi

How can I get the Focal Length (set via the Navigation Wheel "Increase/Decrease Focal Length" menu item) from the API pls?

Thanks

Paul

[rosalesduquej]

Hi Paul,

So I don't see anything that can be access from the API to that item. The ony thing I can suggest will be taking a look at the View3D class, but definetly more work will need to be done on your side to achieve what you are trying to do. Here is a post related to the View3D class I'm talking about. 

https://forums.autodesk.com/t5/revit-api/how-to-change-camera/td-p/5942690 

Check it out and maybe Can give you an idea on how to solve what you are trying to do. I see the link in that post does not work so use this one instead but read the post also. 

http://help.autodesk.com/view/RVT/2016/ENU/?guid=GUID-A7FA8DBC-830E-482D-9B66-147399524442

Cheers,

[pfk]

Hi Jaime

Thanks for the link.

I did some testing, and changing the Revit focal length (via Increase/Decrease Focal Length) does not change any of the View3D properties that I can see.  It does not change the Origin, Outline, Cropbox, UpDirection, ViewDirection, RightDirection or SectionBox.  So I am perplexed - I do not understand how to obtain the Focal Length.

Paul