What does the x100s deliver above or different to the x100

[willie_901]

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I do wonder, however, would your Fuji have focused the same if your baby had been black?

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In this light I think the FUJIFILM AF would have been equally effective if the dog had black fur.

In much lower light levels less exposure (signal-to-noise ratio) subject radiance becomes more important for every camera's AF system. So, at some point a dog with dark fur in motion must have a higher focus failure rate than dog with light fur.

 

[willie_901]

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Numbers, mft charts, yada yada yada, is all fine and dandy. I use what allows me to make pretty pictures. ...

Increased technical performance increases image information content. Making "petty pictures" and using data with more information content are not mutually exclusive.

At the same time, image rendering aesthetics are have significant subjective elements. Clearly these are important.