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Full user review
"A comprehensive viewer-***-editor"
Handles a very wide range of formats. Intuitive, logically structured. Flexible, with a number of tools and some nifty touches.
Speed of rendering. No curves function.
To be highly recommended. Overall, compares well to FastStone, which is my benchmark. Capable of displaying even .xcf (GIMP). Its Contact Sheet facility is a useful delight while working on projects and/or series.
Note to CNET editors: I would write more but for the grey typeface on grey background while formulating the review. Get it sorted, or I will not be bothered again.