The two photos, while they look sharp in the thumbnails, are even less sharp when expanded than the photos submitted via computer. As you and I have been discussing, the photo quality on the new forum is significantly inferior (in my opinion) to the photo quality on the old forum. In some cases I have included the same photo file with a post to the new forum that I used in a post to the old forum, and the quality when the thumbnail is clicked on and expanded on the new forum is very poor in comparison to the result of expanding the same photo on the old forum.
My guess is that the new forum software considerably compresses and thus degrades the photos included in posts regardless of the resolution of the file attached to the post. I suppose this makes sense in terms of keeping the data volume down on the server but the price is a significantly degraded image quality. Photo quality reproduction is one area in which John Baker's original forum was noticeably superior.
But.... this is a boating forum, not a photography forum, so in that sense photo quality could be considered a secondary priority.