If you upload to a half decent image host, for example
www.imgbb.com you don't have to resize your photos and lose quality.
All you do upload into your albums, select what you want to post here, and grab thumbnail links to include within your post.
These thumbnailed images won't be limited by the forums data or size requirements as they won't be hosted here, what you see here is grabbed from the host, using their bandwidth instead of the forums. If people want to see the full image, they simply click on it and it'll load in a new window directly to the host site.