I have been using a Sunpak DigiFlash 3000 mounted on my D3100. Mounting and removing it has not been a problem until today. I mounted and screwed it on the way I usually do, but today it stuck and ...
I have the Canon Speedlite 580EXII for 3-4 years now, and I have used it with a 450D and more recently with a 60D. With both bodies, there was a very weird behavior where ETTL or even TTL will ...