Posted February 4th, 2010
After a few unsuccessful tries at getting my Merlin/7D/Zeiss 12 combo balanced, I went out to visit the. experts at Steadycam USA in Glendale. Incredibly helpful nice folks out there. Dan spent an hour and a half with me. He balanced the rig in 5 minutes, then gave me a tutorial on how to move it. We spent the last half hour with me in vest/arm setup on a SteadyCam pilot. Great fun.
So this is the deal. It is far far easier than I had imagined. Forget about all the tables and measurements you find on the web which are like 10th grade physics class all over again. No need for that stuff. Get a light stand or a tripod out and mount an arm on it with an up facing stud. If you don’t have such a thing, Steadycam will sell you one for $45. I bought one. On your finger on a desk top, try to guess the approximate center of balance for the width and length of the camera. It will probably be just back of the lens, and towards the handle. Now take the mounting plate and line up the H hole over that point. Screw in the plate to the camera so that it more or less keeps that position. On mine it was either the M or N hole. It is helpful to put some gaff tape on the plate to give it some friction against the camera bottom. Weight the spare: middle position 1 finish, one standard; bottom position start weight, finish weight and 3 middle weights. Now put the plate on the Merlin and move it back and forth until it is in very rough balance. Don’t worry if it flops around, just put it somewhere that is about right. For me, it was back about to the -2 mark. Put the camera on the stand. Move the screws side to side and back and forth until you get close to static balance. Take the Merlin off the the stand and hold the handle at a 45 degree angle. Do a drop test. You want about 1 sec of drop time from side to bottom, but this is just a guide. The drop time will effect the technics you use to guide the camera in its moves, as you will see. The drop time is adjusted by moving the spare longer or shorter. The drop time adjustment has most likely messed up the static balance, so go back and redo the static balance. Then do another drop test, and back and forth until there is static balance and about 1 second of drop time. This sounds hard, I know, but it isn’t. I can do a new lens in about 5 minutes now after having about an hour of practice.
Now this is the tricky part, actually using the Merlin. One hand holds the handle, the other hand gently pinches the control tab. What worked best for me was to tap tap tap squeeze it gently to control the motion when in a dynamic move. The hard part I found is that the my right arm gets tired, which for some reason makes my left hand squeeze more on the tab. This is where the Pilot, with its vest and arm is great. I found after 10 minutes on it I was able to do a decent job. The weight is fully taken by the vest/arm rig so there was not the brain confusion of trying to support with one hand and control with the other. Maybe it was just me, I don’t know. The other down side is the monitor screen on the Canons is hard to see if I move my arm to the side or down low. I am looking into a very light weight monitor, but have not found one yet.
All in all, the Merlin is sort of great. It is not something I am going to use all the time, but for what it does, for the its relatively light weight and lack of bulk, it is a pretty great thing. Let me know if anyone has any questions, I would be glad to share what I learned.