Please dont make yourself look dumb.
Where is this AWFUL noise you talk about in the unzoomed pic…this is the largest pic they show on the site of that shot. There is NOTHING you can tell from this size. Stop trying to sound like you know anything. Once again at ISO1600 those are perfectly acceptable for any 8x10 print and you will never see the noise at that small of a print.
Sounds like you need to read up more on exposure and understand shadows and how they effect noise.