I have been reading the review of the Canon EOS 1300D by The Digital Picture and I came across this
As with the T5, the T6 image details in the color block comparisons are very slightly smaller than those from some of the other 18 megapixel DSLR samples. This is because the T6's Live View display does not provide quite a 100% view, causing the test target to be framed slightly wider than other models.
What exactly being "widened" mean? Why does that happen?