Why do you people want this effect? it looks prehistoric to me and what makes the atmosphere is the actual design of the game if I look at the video.
Instead of storing the object’s location, getting camera location, interpolating the object to move to the desired position (which is camera location with some offset forward), then on drop interpolating back to the stored position, I would use a physics handle and real time physics interaction to actually pick up the object, which would look better and let you knock stuff around the room with the object, but that’s my opinion. You can still assign your movement keys, (id use mouse axes though) to rotate the object while held, and upon drop you just drop it, no reverse interpolation, or do it anyway, keep the room neat.
(I really hope its not the blur effect you all want to achieve, haven’t tried it yet, but something like a plane with post processing applied to it to appear behind the object - what, blur sheet?)
I found a good tutorial on the physics handle (skyrim style of object interaction) and improved a little with a few validation checks to not get errors, here it is, I hope it helps. BUT the easier way of just moving the object into view is not this.
