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Newbie - setting up gh1

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#1 David Preutz

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Posted 21 February 2011 - 09:54 AM

Hello All
I've been through the dvd, manual & user cookbook settings a number of times and seem to be reasonably close but, no cigar yet:-)). However, I appear to be miles away from any user cookbook settings on my GH1 &, although I'm getting a slow drop time it still seems to be very pendulummy. The user settings I've tried seem to be way off. Perhaps I'm way off in my understanding & handling.
My Settings:- GH1 with 14mm pancake: weighs 500g. Front= finish: Bottom= finish & start: Mount Hole= H: Platform= -0.25 Caliper distance = 230mm: Z turns -7 from closed although -8 gives it a lovely slow drop.

Presumably the idea is to be carrying the least amount of weights required to balance the camera to zero & then fine trim to get level, then fine tune Z to get the drop? Does it seem to someone more knowledgable, that I do not have enough mass (ie weights) on the Merlin to give it some sort of bulk to steady it a bit?
I look forward to hearing back from you & cracking it.
Many thanks David
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#2 David Preutz

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Posted 25 February 2011 - 10:46 AM

I think I might have cracked this. Although, one thing I would say is that the GH1 with a 14mm pancake on only comes in at 480 grms. meaning very little weight is required to balance thing up, so the whole rig is very light & does tend to sway a bit. Probably not aided by my inexperience. However, balancing the rig up with other heavier lenses has proved far more satisfactory (Body & lenses ranging in combined weight from 815 to 1000 grms.) Therefore, it seems to me adding something to bulk up the body & pancake weight would improve things considerably.
Any ideas out there what to add? A aluminium tripod plate ain't that heavy and, I would imaging one doesn't want to raise the camera's CG too much.
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#3 Sam Morgan Moore

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Posted 27 February 2011 - 05:25 AM

A simple thing to add is a hotshoe mic because it is quite distant from the gimbal the additional stability is of significance

(my understanding is inertia is driven by the SQUARE of the mass times distance from the gimbal)

Some Rails will lift the camera and have some mass

Becuase the camera is very compact unlike a 'long' video camera I think rotational inertia is low

You can maybe configure with more mass at the front and close the spar to compensate maybe

I have done things with rails and adding a little mass at the rear of the rails to add rotatinional inertia

I think adding a plate is not such a bad idea to lift the camera a little, spreading the mass from the gimbal, it could also aid a transition to sticks or handheld rig


Edited by Sam Morgan Moore, 27 February 2011 - 05:28 AM.

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