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How does the new layout used in Fujifilm X-Pro1 sensor improve image quality?

Photography Asked by Imre on September 8, 2020

One of the allegedly big advantages of Fujifilm X-Pro1 is its new color filter array layout, which does not require anti-aliasing filter in front of it. In theory, this could mean notable improvement in perceived sharpness and details. Also, Moirè effect should be avoided with the reduced repetitiveness in filter pattern.

Are there any image comparisons available taken with the X-Pro vs a conventional Bayer sensor DSLR with similar specs (APS-C around 16MP), showing how these advantages work out in reality?

One Answer

In contrast to the standard 2x2 bayer pattern the X-Pro 1's sensor uses a 6x6 pattern (see this link for images)

R,G,R,G,R,G        G,B,G,G,R,G
G,B,G,B,G,B        R,G,R,B,G,B
R,G,R,G,R,G        G,B,G,G,R,G
G,B,G,B,G,B        G,R,G,G,B,G
R,G,R,G,R,G        B,G,B,R,G,R
G,B,G,B,G,B        G,R,G,G,B,G

The new pattern results in every horizontal and vertical line being covered by all three photosite colours, the lack of which is the main source of moire in bayer pattern sensors. They combat this by using an anti-aliasing filter to (slightly) blur the image to ensure that all lines will hit all three colours. The lack of this blurring in the image that hits the X-Pro 1's sensor results in the potential for increased sharpness and image quality, which seems to be born out in reviews, see here and here

dpreview allows you to compare the X-Pro 1 to a wide range of cameras (shooting the same test scene) here.

Correct answer by Steven Cunningham on September 8, 2020

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