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.
A big SLR isn't the only way to get a full frame sensor. The Sony Cyber-shot DSC-RX1R II is a small compact with a fixed 35mm f/2 Zeiss lens, but you pay for its size and top-notch glass. The Leica Q features a similar design, but its full frame sensor is married to a wider 28mm f/1.7 lens and its price crosses the $4,000 mark.