User blog comment:SamwiseFilmore/ImageMagick/@comment-25330335-20151216185202

I got it!

-scale

That is the option to use. It does it without Interpolation nicely. I should have all the asset for B25 converted and in dropbox by this evening.

 SamwiseFilmore (Admin) (Fill My Mailbox) 18:52, December 16, 2015 (UTC)