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.
Canon's 20.2-megapixel EOS 7D Mark II is one of the fastest, best-performing DSLRs we have seen. With a $1,800 retail price (body only), it is also one of the most expensive cameras using an APS-C size sensor rather than the larger full-frame sensors that are usually the mark of a professional camera. The 7D Mark II captures images at a top-notch speed of 10 frames per second.