Panasonic has officially barged into the full-frame mirrorless fight by launching two new cameras. The S1 is a 24.2-megapixel camera mainly targeting video shooters, while the 47.3-megapixel S1R is for portrait, landscape and other types of high-resolution photography. They looked promising when we saw them at Photokina last year, but there was still a lot we didn't know. Now we not only have the full picture, but I've had a chance to handle the cameras for the better part of a day.

Source: Youtube