Thank you for your comments
Mitch640, You're right, bacterial flagellum is usually not visible in the light microscope due to size below the limit of resolution but for some large species (e.g.Spirillum volutans) flagellum can be seen if we use contrasting methods like phase contrast, DF or DIC. It happened to me to see (very rarely) bacterial flagellum using DF or DIC.
Marek, of course. Please check PM.
I'm very curious results with your camera.
New video, this time
Spirillum in Darkfield:
http://www.youtube.com/watch?v=R99T08Fj ... re=related
