Viewfinder is an Addon that Helps provides Utility and Camera Related Tools. It Helps With Managing Cameras In Your Scene
You can Preview Your Camera inside your Viewport Visually
Note: Cycles Render will not show in Camera Preview
If you Use Left Click Select, it Might Make Gizmo Unclickable, to fix this problem, Make Sure to Change Your
Preferences-> Keymap-> Activate Gizmo Event
Change it from “Drag” to “Press” to fix this problem
List your camera in the side panel, simplify the process of managing multiple camera in the scene.
With each Camera Item Listed, You can Do the Following.
You can Create New Camera From View which is a more Intuitive Way of Adding New Camera and Bind Camera to Timeline Marker at Current Frame When you Create The Camera
Create A “Camera Booth” where it have Camera In Angles from Many Views
Can Be useful if you Want to Render For 2.5D Sprite Render, or if You want to Quickly Render Your Model From Multiple Angles.
Bind Camera to Timeline Markers and Increment their Frame on Selected Cameras
Create Camera on Curve and Apply Clamped to Constraint on the Selected Curves
Create Empty Target for Selected Camera and Apply Track to or Damped Track Constraint.
Create Camera and A Empty with Track to Or Damped Track Constraint Applied. While You can do this manually easily, this could saves a few clicks,