X20

Its hard not to wonder how much extra clarity and low light capability the X-Trans sensor will bring to the new x20. In that vein a little spreadsheet seemed a good idea, based on the difference x-trans brought to the x-pro1 and x-e1 - aps-c to full frame, an effective multiplying of the sensor area by 2.35 (marked in blue).

Doing the same for the x20 X-Trans sensor gives us something ahead of the 1" sensor (x2.12) and behind the 4/3 sensor (x3.87 marked in red).

When considering the low light capability of the X-Trans x20 one is likely to see a similar or better benefit. The excellent lens on the x20, same as the existing x10 is likely to play a significant role in leveling against the current 4/3 cameras - most of which are supplied with f3.5-5.6 lenses.

Using a simple exposure calculator we can see that the x20 lens has an aperture benefit of between 1.5 and 2ev over most supplied 4/3 lenses, the x20 also has a greater focal range than most with its 28-112mm.

The aperture benefit makes a tremendous difference when shooting in lower light. Taking 2 other camera/lens combinations, the Nikon v2 (1" sensor) and the Lumix Gf5 (4/3" sensor) with their standard lenses - using the x20 ev benefit above we can see the difference demanded in terms of iso.

Even though the standard lenses on the V2 and Gf5 have a shorter focal length, the x20 lens still out performs both in low light, long and short ends of the focal range. Add the X-Trans benefit mentioned earlier and the x20 will surely be a clear price performance leader against 1" and 4/3" sensor cameras.