I've never paid attention to those tiny spiders on my window screens until I became fascinated with the macro photos on this forum.
So, yesterday I saw a tiny spider (about 1.2mm wide) and decided to move him to the table and see what he looks like up close. To my surprise, he was a jumper. I never thought they were that small.
I used a 5D with a 50mm 1.4 and complete set on Kenko tubes for these. I should have reversed my 50 1.8 at the end to get a bit closer, these are pretty heavy crops.
A 100% crop of his face:
Here he is on the window screen to show how tiny he really is:
BTW, my wife was pretty disgusted by it, but my kids loved it.