I have some video side project coming up, and just got the d7100. I'm a novice with both the camera and DSLR video shooting in general. Any tips you can provide would be helpful! I noticed when I rack focus, my adjustments are shaky and are noticed when playing back test footage. Any thoughts on this? I'm using the kit lens, the nikkor 18-105mm( I believe; I don't have my camera on me currently). The lens is set to MF, and the switch on the camera body is set to MF. This is correct to do, right? Since I do not have a follow focus, I rack with my hand. I think my ******* tripod (it's light and very cheap) is adding to the shakiness as it does not serve as a heavy, study foundation. Thanks, all, for any insight and tips you have for an amateur such as myself.