1 Proterozoic: this eon refers to the time from the lower Cambrian boundary, 541.0 Â± 1.0 Ma, back through 2500 Ma. 2  As originally used, it was a synonym for Precambrian and hence included everything prior to the Cambrian boundary.
Canon's 50-megapixel EOS 5DS is the highest-resolution full-frame DSLR ever. If you thought the megapixel wars were over, think again: Canon's latest DSLRs cram just over 50 of them into a full-frame sensor.
Most popular smartphone screen resolutions in 2015. The first 4K (2160 x 3840) smartphone, the ZTE Star 3, is reportedly on the way, and thus perhaps 4K will become the new standard for mobile device screen resolution. However, lower resolutions are currently the most popular in the smartphone world.