I’ve run into a problem with the Canon 5D Mk2 and the Jaybilizer camera stabilizer.
I had two customers that are using the 5D and had sent me good reports, However, I have found that they had to add significant ( 1.5 lbs) counterweights over the washers that are shipped with the Jaybilizer.
I was able to do some hands on testing today and need to share the results.
First is that I discovered that we need to under sling the counterweights to lower the center of gravity and to provide mechanical advantage for the weights. Otherwise the weight of the camera and stabilizer becomes unmanageable.

Please look carefully at the attached photographs and notice that I had to reverse the bottom 3 1/2″ screw so that is pointed downwards. I then added 4 large (2 1/2″ Dia. (62mm)) washers in addition to the ten of the 1 1/2″ ( 37mm) washers for a total weight of 14 Oz. or 400 grams.
I then mounted the “kickstand” beneath the counterweights and affixed it using the wing nut.
For side to side counterweight, I loosened the gimbal handle screw and moved the aluminum rod as far to the left as possible and added 9 – 1 1/2″ washers to the plastic knob screw.
Note that you will have to purchase the 4 or 5 large 2 1/2″ washers in addition to the 25- 1 1/2″ washers that ship with the Jaybilizer.
This is a temporary work around to allow you to shoot with the 5D. I’m working on engineering a more elegant solution and will ship current 5D/Jaybilizer owners the upgrade your Jaybilizer at no charge as soon as it is available.
In the meantime I am not recommending using the Jaybizer 3000 with the Canon 5Dmk2.