A close-up can make a molecular structure easier to inspect—but changing the view can also make a carefully framed scene feel disorienting. If the camera’s point of focus shifts while you zoom, visual effects tied to that point, such as fog or depth of field, may change too. For a closer view that keeps the target point fixed, SAMSON’s Zoom camera animation offers a straightforward option.
The key distinction is simple: Zoom camera changes the camera’s position between its start and end frames, while leaving its target point unchanged. In practical terms, the view moves closer to or farther from the existing center of attention instead of aiming at a new one. That can be useful when you want to reveal molecular detail without changing the camera target that supports the rest of your composition.
Build a zoom between two frames
Start by choosing the animation’s start frame in the Animator’s Track view. At that frame, orient the view and camera to establish the composition you want viewers to see first. Then double-click Zoom camera in the Animator’s Animation panel and choose the end frame for the animation.
This order matters: the camera view you set at the start frame becomes the starting composition. Before adding the effect, take a moment to check that the relevant part of the molecular system is positioned as intended. You can move the animation’s start and end frames later, so you do not need to treat the first timing choice as permanent.
When a fixed target is useful
Consider a scene where you have already placed the target point at the center of a region you want to examine. A Zoom camera animation can bring that region closer while preserving the target point. This is especially relevant if you want to avoid changing the target used by effects such as fog or depth of field.
If, instead, you want the camera to aim at different points at the beginning and end of an animation, compare Zoom camera with Dolly camera. The documented difference is that Dolly camera can have different target points for its start and end frames. For a camera move that is not specifically a zoom, see Move camera.
Check the camera settings
By default, camera animations apply to the active camera. The animation’s target point is defined by that camera’s current target position, which is essentially the center of the view. If you need the animation to apply differently, inspect it and adjust Apply to active camera.
Camera positioning may behave differently depending on whether the grid is on or off. The Keep camera upwards option controls whether the animation’s behavior depends on that grid state: when checked, it does. If a result looks different from what you expect, check the grid state and inspect this option before changing the framing.
You can also adjust how the camera’s parameters transition between frames by changing the Easing curve. For finer control over the camera’s target point and positions, use the animation controllers; the camera-position adjustment guide explains that workflow.
A useful final check is to play the animation and confirm three things: the intended region stays central, the target remains where you expect, and the transition feels appropriate at its chosen duration. If the target itself needs to travel, choose an animation designed for changing target points rather than relying on a fixed-target zoom.
For the full instructions and available properties, see the Zoom camera documentation.
Note: SAMSON and all SAMSON Extensions are free for non-commercial use. Get SAMSON.