Fuji X-20 compared to Nikon D50

Started Feb 28, 2013 | Discussions thread
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a l b e r t Senior Member • Posts: 1,452
Re: Fuji X-20 compared to Nikon D50

I agree with Mr Sincere. The X-trans sensor has really shown some major advancements in how well an APS-C sensor can compete with recent model FF sensors in low light. My Xpro1 puts my X100 to shame at 6400. It's entirely possible that the X-20's new X-trans sensor could out perform the 7 or 8 year old D50 in every area except for thin DOF.

Depends on which FF sensor you're talking about. X-Trans to a Canon 5D FF sensor, yes. It is not even close to a FF sensor in Nikon D3s. On D3s, ISO 1600 is like X-Trans ISO 400. My D3s puts my X-Pro1 to shame even at ISO 400.

The real advancement here is actually the core Sony sensor, using a 22um process and with A/D converters embedded on the sensor itself. What Fuji provides is merely a different CFA. With the extra 2 green pixels in a 6x6 grid, san-AA filter, the X-Trans gets you a slightly better luminance signal (hence slightly lower noise than a Sony Bayer sensor), but in return, the red and blue colors are more muted with higher ISO on the X-Trans. There is no free lunch.

Now, it depends on who makes the X20 sensor. I don't think it is by Sony, so it is likely to be an older generation design with the X-Trans CFA. This is why we do not see a significant high ISO improvement on the X20 sample photos so far.

In fact, X20 will need to go up to ISO 800 to achieve DR400%. A sensor's native DR is reduced with higher ISO. Where as X10 can do it with just ISO 100 in M size capture.

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