Synthetic HDR Plugin Known Issues
From SarahWiki
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Edge pixels problem
Currently, the plugin doesn't modify the two rows of pixels nearest to the edge of the image. Sorry about this -- I'm working on a workaround for it, but it's quite tricky getting this to work without odd artifacts creeping in at the edges. This should go away in the beta version, so watch this space for an update.
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Limited 8-bit support, untested 32-bit support
The plugin supports 8-, 16- and 32-bit modes in both colour and grey scale. However, I've only really tested it in 16 bit mode so far. It works in 8-bit mode, but you'll probably have to use quite small values of Amount to get anything sensible out of it. It works fine in 16 bit mode, however, so I'd recommend using that if you aren't already when playing with the alpha version.
