Pictures, as they come out of cameras these days, are huge. You can make decent pictures that come in at under 100kB, if you talk to your photo editor software correctly. That gives you ten pictures per post, which is quite a bit to wade through without commentary.
Alternately, you can post the pictures to some hosting site and post links here.
There's also a photo gallery, and it appears that you can just upload pictures to it. Then you can grab the image address and post a link here -- like this one, posted by Elwyn Aud and captioned as Bob Dixon's
Crystal: