How to Make 4k Comps?

unknown_001
unknown_001 Posts: 148 Just Starting Out*
edited February 2018 in Post-production techniques

So for a while now I've been pretty frustrated about what should be a pretty simple task - creating 4k comps. I can't set a pixel value higher than the normal 1920 x 1080. Am I doing something wrong? Thanks in advance.

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