Blend settings between keyframes
The blend feature is where the real power of the Timelapse+ STUDIO plugin is at. This interpolates the develop settings between each keyframe, making for smooth transitions and animations. It also automatically smooths out any camera settings changes for flicker-free exposure ramping.
Local adjustments such as brushes, gradients, masks and even the clone tool are smoothly blended between keyframes. If a local adjustment is present on a single keyframe but not on the adjacent keyframes, it will be copied to the adjacent keyframes with the corrections set to zero, then interpolated between, resulting in it fading in/out, with the full strength of the correction peaking at the original keyframe where it was created.
Local adjustments and the crop can also be animated. If you use the Previous button, Synchronize, or copy/paste local adjustments, they will be recognized as being connected, so any changes, including changes to the position, will be interpolated between keyframes. For example, if you start with the first keyframe, add a gradient, then copy that gradient to the second keyframe and change it's position or anything else about it, those changes will be animated between the first and second keyframe. This can be useful if you want local corrections in a certain area that's moving across the frame in a motion control sequence.
Click the "File" menu (upper-left corner of Lightroom),
then "Plug-in Extras", then "#3: Blend settings between keyframes". It's ok if the current view in Lightroom is still filtered for just the keyframes -- it will change it to show all the images. It will then analyze the current sequence and display the settings across the keyframes.
Press "Blend Keyframes" to interpolate the keyframes across the entire sequence. Any changes to the develop settings for images that are not keyframes will be overwritten (but still in the history). Once this is complete, the sequence is ready to be exported.