Yes, you are correct - its not within the same frame of reference but observing from one frame to another.
Lets say you're watching a DVD; the main characters are walking having a conversation. Now fast seek - they speed up and talk faster. If the characters were conscious entities then within their world nothing has changed, but from your viewpoint everything is going faster.
One difference with the physical world is the effect is symmetrical - so if you were observing the movement of crew on a fast moving spaceship from far away you would see them seeming to move very slowly; conversely they would see the same slowing down when observing you.
But in each case you are correct that "slower" and "faster" are not in operation within the "same time" but only when viewing into one time "bubble" (DVD) from another.
The "bubble-to-bubble slowing down" itself is not some marking off against a universal time axis either (which is at the root of the difficulty in understanding I think), but - if we remember that time is subordinate to the constancy of speed of light then to maintain this constancy, the measurements of time and space in different frames must adjust relative to each other as the frames speed up and slow down.
It is this latter waxing and waning that produces the effect "slower" reflected between two different frames of reference.
Yes, you are correct - its not within the same frame of reference but observing from one frame to another.
Lets say you're watching a DVD; the main characters are walking having a conversation. Now fast seek - they speed up and talk faster. If the characters were conscious entities then within their world nothing has changed, but from your viewpoint everything is going faster.
One difference with the physical world is the effect is symmetrical - so if you were observing the movement of crew on a fast moving spaceship from far away you would see them seeming to move very slowly; conversely they would see the same slowing down when observing you.
But in each case you are correct that "slower" and "faster" are not in operation within the "same time" but only when viewing into one time "bubble" (DVD) from another.
The "bubble-to-bubble slowing down" itself is not some marking off against a universal time axis either (which is at the root of the difficulty in understanding I think), but - if we remember that time is subordinate to the constancy of speed of light then to maintain this constancy, the measurements of time and space in different frames must adjust relative to each other as the frames speed up and slow down.
It is this latter waxing and waning that produces the effect "slower" reflected between two different frames of reference.