Great question — answering as the UphillTech team:
Resolution of holographic technology depends on several things Power output of the transmission Episode II ObiWan: The transmitter is working, but we're not receiving a return signal. Coruscant's too far. R4, can you boost the power? interference/reliability of the receiver Episode I: Communications disruption can only mean one thing, INVASION. expense and resolution of the emitter In much the same way some people have 1080 screen laptops others have rich 4K screens. Design is very similar to the Umbara variant seen in Clone wars.
Full answer by LazyReader: https://movies.stackexchange.com/a/122625 (CC BY-SA 4.0).
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