The Field of View command never “zoomed” the same was as the zoom tool works. I’m still on 2020, so I can’t go check quickly if it’s changed.
Here’s how I think SU works with the three “zooming” functions:
Conceptually, reduce taking a picture with a camera to a 2D plan view, and three variables:
- Angle of View (measured in degrees)
- Distance to Subject (measured in length)
- Field of View (measured in length)
I think each of the modes tries to hold one constant while changing the other two.
• The Zoom Tool without a modifier changes 2 while holding 1 constant & 3 changes as a consequence.
• The Zoom Tool with the shift key changes 1 while holding 2 constant & 3 changes as a consequence.
• The Field of View tool tries to hold 3 constant while changing 1 and 2 simultaneously.
It’s hard to tell about Field of View, because SU has to make an assumption about what the subject is to hold that part of the picture frame relatively constant. I’m not sure, but that’s what it seems like it’s doing to me.