Low mode-Don Juan-Running- Vibrations
Posted 02 May 2014 - 04:57 AM
I couldn't help but notice a sharp vibration on every step..
I am using a GPI Pro Cinelive rig, pro titan arm, satchler monitor arm, cinetrobic gen 2 and was shooting to epic/master primes
Is this a normal occurrence and I should of been pushing for grip to help move me around? I wasn't aware of the shot requirement until the day
I did just the day before dismantle and carefully rebuild each component..
I've noticed a similar vibration in my shot when going to low mode on my rig.. In regular high mode, no vibrations
Posted 02 May 2014 - 01:56 PM
As far as the sled...it's an aluminum post so it's sometimes hard to track down things like this especislly since you checked and made sure everything was tight.
Posted 02 May 2014 - 07:26 PM
Posted 02 May 2014 - 08:06 PM
I will second Aaron's statement. I did some lowmode stuff with an Epic from a rental house that had an external battery/power solution (which is wonderful), but they way they had it mounted was not very secure. Hence some vibration ensued.
Posted 03 May 2014 - 05:12 AM
Justin, what top-stage are you using ? Is it a Donkey Box II or III ?
Posted 03 May 2014 - 05:06 PM
I am going to assume there are some weaker components when it comes to vibrations, the db3 is solid as.
the sachtler monitor arm & cinetronic yoke, potentially the pro mdr mount (especially upside down) and also the epic lens mount when I tap my rig built I can see a bit of wobble in those components
Picture of setup below, minus the battery on the monitor
ImageUploadedByTapatalk1399154556.035590.jpg 135.18KB 29 downloads
Posted 03 May 2014 - 05:55 PM
Chris Fawcett had a quick fix to solve this low-mode high vibration problem. He uses tether lines from low mode camera plate running up to top of inverted sled! Using tension to counteract and nullify high frequency Vibrations! Simple fix but it works!
I've been fighting this low mode vibration problem for years! First noticed it with Pro Superpost. Problem is you don't see vibrations till you go to Dailies!
Posted 03 May 2014 - 06:18 PM
I would try to put the monitor into the "normal" low mode position, even putting it on the outer post, this spreads out the masses more over the length of the post and makes for a better visibility...depending on the shot, you can also reverse the camera orientation, for a leading type shot
PS, nice shade sails...
Posted 04 May 2014 - 04:22 AM
Justin, indeed, since you're on a db3, it ain't the topstage.