I want to make a freeze time effect (also known as a bullet-time effect) in blender. so the camera is moving, but everything in the frame stands still. I already have a smoke simulation and I want to pause it on one frame. while the smoke simulation is paused the camera should move around the smoke. Does anyone have an idea how doing that? Thank you for your answer. (I am in cycles)
I haven't tested this.
Use key frames - set key frames for your main objects up to the point that you want to transition into "bullet-time". At the point, have no more animation/key frames for these objects.
However, continue the animation, setting the keyframes for the camera. Assuming that the camera was not moving in the first place, your first camera keyframe would be when everything else stops moving. You can then move and rotate your camera around the scene. IF the camera is moving in the first place - still move and rotate.