To get a sense of the smaller sense of the RX1, we’ve lined up the other cameras we have on hand: a pure-bred professional DSLR, the Nikon D3, and a recent mirrorless camera, the A Fujifilm X-Pro 1. I’ve chosen lenses that are similar focal-length: the 18mm f/2 on the X-Pro1 (27mm equivalent) and the Nikkor 35mm f/1.4G on the D3.
If the continual advancements in the miniaturization of photography doesn’t astound you, perhaps the rapid progress in sensor technology would. From left to right: 24 megapixels, 18 megapixels and 12 megapixels.
Out of these two thought, only the Nikon D3 and the Sony RX1 have comparable sensors: both have 35mm Full-Frame CMOS sensors. Despite the Fujifilm being of a similar size to the Sony, the Fujifilm’s sensor is nearly 60% smaller than either camera, which is reflected in the compact optics in the 18mm.
For those considering between Fuji’s X-Pro1 and the RX1, here is a size comparison of the bodies width-wise:
Cameras compared height-wise:
The X-Pro1 is a bit taller than the RX-1, one of the reasons of which is its hybrid viewfinder, which offers both an optical and electronic view. Although shorter, the RX1 includes no viewfinder at all (although available at a considerable sum.)