For the hell of it - camera resolution

I had posted this image earlier today - taken at Port Townsend's Fort Warden park with a freighter passing in back of the lighthouse.

Just for fun, I went back to the original camera file and cropped a section out to see:

Handheld, braced well against a fence post. Shutter was 250 and ISO 160. Native camera JPG file - have not looked at the RAW data as yet but expecting less of a staircase effect on the straight lines. This is a noticeable glitch with JPG files.