I came to this hobby from an RC flying background rather than a photography background and have been learning a lot lately. I've taken some photos that I'm very happy with, but now have questions about capturing larger images. I used Lightroom and have merged three photos horizontally, but is it possible to also somehow merge vertically? So three original images wide by three original images high for a total of 9 images merged? Also, I've read merging more photos gives higher pixel density and for some reason I can't wrap my mind around that. If I want to just capture a pano, am I going to get a higher resolution image by panning 5-10 degrees between each image and then merge 18 photos into a single pano versus merging 3 images? Let's say they both cover approximately 150 degree field of view. Last question for now: when capturing a pano I have been hovering and panning so all images are captured from that center point. Am I better off to "roll/slide" along the area I'm trying to capture? Example would be a shoreline...Is there benefit of moving along the shoreline taking overlapping images rather than staying in one spot and panning? Thank you!