First, review the attached photo "original.jpg"; It is in portrait orientation. I wanted to crop it so that it is in landscape orientation. I cropped it, and produced "cropped.jpg".
The jAlbum cropping tool offers a pre-determined list of cropping dimensions. Since this is a portrait image, it offered portrait dimensions. 9:16 was available, but 16:9 was not offered. I could have dragged the borders manually, but I wanted 16:9 exactly.
Since I could not accomplish this crop with jAlbum; I used The GIMP instead.
So, I request that the cropping tool's Predefined Ratios should always include both portrait and landscape ratios. I suggest that:
The list of ratios should first list the ratios that match the original orientation, followed by other ratios.
Alternatively, allow the user to manually enter his required ratio.
Even better, allow the user to choose landscape or portrait (this would default to the image orientation), and then offer the matching ratios.