Thread:War Pig1237/@comment-204.187.76.254-20160421170057/@comment-25101690-20160429145404

Since Minecraft has no LOD, zooming would mean simply cropping a part of the screen. That would not affect the performance at all. For example Optifine also has a zoom key.

Maybe you thought to load distant chunks when you look into this direction. That could have a huge effect on the performance. Loading chunks could mean generating new terrain, spawning and loading entities, and other things. What if you turn around yourself very quickly while using a telescope? It would have to load all distant chunks all around you. It would also probably cause a lot of bugs with chunks that don't get unloaded again and would possibly interfere with Fastcraft and Optifine.