Originally posted by dcshooter Mine worked quite well out of the box, but I did end up doing excanonfd's spring mod, which definitely helps keep the mount stable when the screw is loosened.
Handles my A* 600mm with ease.
I'm hoping it will allow me to use my recently acquired SMC Pentax-M M42 500mm. That thing is like an anvil! Right after I got it, I just HAD to try it out, so I mounted it on my Beike BK03 ball head and HOLY SMOKES! A very BAD idea! There was a very gently breeze and the thing wobbled all over the place. I did manage to get a couple of test shots that came out quite sharp, so I'm anxious for the gimbal to arrive.
On a side note, I need to "semi-permanently" attach the M42 - K mount adapter to the lens. Which "color" of Locktite would you recommend?