Andrea,
Thanks for your comprehensive reply. I am aware of the conversion to tif option and while unwieldily, it would work. However, that point is moot for me as I can no longer open CNX2 on my iMac because I was stupid enough to uninstall it in hopes of installing an earlier version to take advantage of a hack that would accommodate the 810. Now all I get is "cannot install" because my computer is not using system 10.7 or later when in fact I am using 10.12.1. I had saved all the old versions of CNX2 and none works. I do have CNX2 on my laptop but that turns the whole process of using the program into a solution that would put Rube Goldberg to shame.
So, no CNX2, to my great dismay.
I know about Irdient's detail tabbed sharpening options but it requires that you do the task prior to downsizing, which is just the opposite of what I want to do. Perhaps I can skip the detail tab, downsize, save and then go back to detail and do the sharpening. Then convert to jpeg. We'll see if that works (it seems that Rube Goldberg is rearing is ugly ahead again - Kilroy was here!).
Your suggestion about the detail enhancement is a good one, but first things first I'm afraid. I first have to figure out the process that works. It will happen but for me such things happen at a glacial pace.
As for Iridient tutorials, I think there are some on the Iridient website (and maybe on You Tube as well). However, being someone who suffers from ADD, learning via the web can make my teeth grind. By the way, how do you like Iridient?
Tom
PS The good news is the 810 seems to be a terrific camera. The biggest bonus is the dramatically enhanced Live View. For that alone, the upgrade of my four year D800 was worth it.