A molecular scene can be clear from one viewpoint and confusing from another. When you animate a camera move, the challenge is not only getting closer to a region of interest: the point the camera looks toward matters too. If that target shifts, the viewer may lose their visual bearings just as an important part of the structure comes into focus.
In SAMSON, the Dolly camera animation moves the camera’s position and its target point between a start and end frame. That makes it useful when you want the view to travel through a scene while also changing what it is centered on. It can also help when working with effects such as fog or depth of field, whose appearance can depend on the target point.
Build the move from the view you want to preserve
- Choose the start frame. In the Animator’s Track view, select where the camera move should begin.
- Set the starting view. Orient the view as you want it to appear at that frame. This gives the animation its initial camera position and target.
- Add the effect. Double-click Dolly camera in the Animator’s Animation panel.
- Choose the end frame. Set the duration of the move by placing the animation’s end frame where you need it. You can move the start and end frames later, so you do not have to get the timing perfect on the first pass.
A helpful way to plan the shot is to decide what the viewer should notice at the beginning and at the end. For example: begin with the larger molecular arrangement, then finish with a particular region centered in the view. The dolly animation can change both the camera position and the target point across that transition, rather than requiring one fixed target for the whole move.
Dolly or zoom?
Use Dolly camera when the target point needs to change during the move. The Zoom camera animation, by comparison, can have only one target point. If your intended shot should keep the same center of attention while changing the view, Zoom camera may be the more relevant option. If the camera should re-aim as it moves, Dolly camera gives you the option to adjust both positions and targets.
Check the animation’s settings
By default, camera animations apply to the active camera. The target point is defined from that camera’s current target position, which is essentially the current center of the view. If you need different behavior, inspect the animation and review Apply to active camera.
Also consider the Keep camera upwards option. Camera positions can be defined differently depending on whether the grid is on or off; when this option is checked, the animation’s behavior depends on the grid state. If a move looks different from what you expected, check the grid and this setting before rebuilding the animation.
The Easing curve controls how camera parameters are interpolated between frames. You can also adjust the camera’s positions and target points with the animation controllers. These controls are useful when the start and end views are right, but the path between them needs refinement.
For molecular presentations, a good camera move should make the structure easier to follow, not ask the audience to work out where the view went. Set the endpoints around the visual story you want to tell, then review the target point and interpolation together.
For setup details, see the Dolly camera documentation.
Note: SAMSON and all SAMSON Extensions are free for non-commercial use. Get SAMSON.