Client mod that overrides server render limits or keeps chunks loaded?

Here's the problem: I need to take good screenshots for a server, with shaders. The problem is, the server's render distance is a bit too short and limits what can be done. This can't be increased for everyone due to the large number of people on the server. What I'd like to know is, is there a client mod that either completely overrides the server's render limit, or keeps chunks loaded when you simply move farther away from them? So you have to fly around to load the chunks, but your client simply keeps them so you can view farther?