I have used ACR to upsample to 4113x6144 by years, because my camera is a little older and doesn't shoot at the capabilities I need.
This past week it has stopped working and limits the upsampling to basically nothing, it keeps it at 10.0 MP and is shrinking my images now. I have to print 12x18 for a class I am in and I just noticed this problem. Does anyone know how to get my ACR back?
The newer ACR version has a different way to specify the output size, either during Save Image or Workflow Options but your enlargement size should still be available within the constraints of the aspect ratio of your images. If you're only getting smaller than native options then check to make sure the Don't Enlarge checkbox is checked. If this doesn't look like your Workflow Options panel then please post a screenshot of yours:
Ok I see now. I was used to selecting from preset sizes. Does this setting stay the same for all images or do I have to go in and change the enlargement every time?
This is a "sticky" setting so you don't need to it every time.