I have a very large MrSID file. When I import it into Didger 5, the resolution is poor. Why?

To save on loading and processing time, it was necessary to design Didger to automatically reduce the resolution of very large MrSID files, even when choosing a Pixel Reduction of 1/1 during import. If the SID file is larger than 8192 x 8192 pixels, then Didger will automatically scale it down by halving the number of pixels until the largest dimension is under 8192 pixels. 

For example, your SID file is 28000 x 14000 pixels. Divide that in half to get 14000 x 7000 pixels. Since the largest dimension is still over 8192 pixels, divide it again to get the pixel dimensions of 7000 x 3500 pixels (with a Pixel Reduction of 1/1).

There is currently not a way to change this. If you would like to add your vote for more user control over the maximum pixel dimensions when importing MrSID files, please email


Updated: April 30, 2018

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