Dragons are a new challenge for me, and I have no experience outside South Africa, but here goes:
1. Tramea limbata FERRUGINOUS GLIDER
2. Palpopleura portia PORTIA WIDOW
3. Trithemis arteriosa RED-VEINED DROPWING
4. Orthetrum sp. - There are several Skimmers that look similar
Vic Roberts, my wife and and I once saw similar behaviour by a White-necked Raven (one of a group of at least 10) at the Giants Castle Hide (KZN, South Africa). We watched the bird hang from the branch of a tree growing out of the cliff face. I must check with Vic to see if he got any...
I download the photos, and open them in Irfanview and then look in properties (Image - information); or in Windows photo viewer (File - Properties - Details). I remember a thread that mentioned a browser add-on that could do it from the browser, but never followed it up.
I'm no expert, but this is probably Lygodactylus capensis capensis
Common Dwarf Gecko (Gekkonidae). It is the most commonly recorded gecko in the Virtual Museum of the Southern African Reptile Conservation Assessment (SARCA; http://adu.org.za/).
Beautiful! - and certainly unusual to get a shot like this. I am fortunate to get these in my garden, but have never had an opportunity to take a photo like this - well done! We do, however, often have the pleasure of experiencing their considerable vocal talent.