Micro Gimbal for GH4, BMPCC, A7s - $699 USD

vladwolodarsky said:
Do you guys have any other wide angle lens ideas for flying an A7s on a Nebula 4000? I had aspirations of using video AF on the A7s but I heard the AF is s*%t.
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Lenses are an issue with the A7s. AF in general is too. I would try larger f-stops for deeper focus and calculate the moves around it. I dont have wide lenses for mine but do for the GH4. Might have to swap out cameras.
 
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focuspulling said:
I had that too; there's a simple plastic cable tie that slides away from the center axis over time, and keeps the rubbing cable cinched in place for most of the time (but needs checking every once in a while, unfortunately). Similarly as the brief manual notes, the cables going into each of the motors can get twisted to the point of possibly snapping, so that's another thing to check from time to time.
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That's three instances of cable rubbing reported on this thread.
 
Erik Naso said:
Lenses are an issue with the A7s. AF in general is too. I would try larger f-stops for deeper focus and calculate the moves around it. I dont have wide lenses for mine but do for the GH4. Might have to swap out cameras.
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Thanks Erik! I have an Olympus 24mm. It's not sexy, but'll probably start out with that one.
 
Hey, Erik, since you are working with their sample, why don't you be the brave soul to unscrew the battery compartment and show us what is inside.

They had told me the battery is replaceable, and gave me a link to a replacement battery, just wondering about that.

They also said they are coming out with a new external battery system that would be a better power solution.
 
Dugdale, your videos are super-informative (not only regarding the Nebula), I love your tests and the stream of consciousness around the Nebula 4000. It's really like having the toy in my hand, you answer every possible question I would have ("ah, I wish he would run now... geez, he just started running !"). :)
Looking forward to your next tests, so far looks very stable except for the roll, if you can get rid of that (thanks to DustyLense settings maybe ?) I would love to see the same walks/run again :)
I also wonder if attaching a little weight at the bottom of the Nebula (a 500g tripod for instance) would smooth out the up/down walk moves.
Thanks !
 
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awomias said:
Hey Kraut69, do you mind sharing that link to the replacement battery? Thanks!
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From sales@chkdntech.com on NOV 19 (but the battery linked does not look to be the correct internal battery replacement to me, more like an external battery) For now I am going to rig up an old Tekkeon battery, will have pictures in a week or so :


I suggest you waiting for 1-2 month,because we have professinal long time battery system with nebula 4000 lite outside.
This is spare battery link
http://shop.chdntech.com/nebula/nebula-stabilizer/battery-and-charger-for-nebula-5000.html
 
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in response to vladwolodarsky

I've been reading here and there where people think the AF on the A7S is "s*%t." Using a wide angle lens is certainly the preferred way to shoot with a small handheld gimbal, but I have been impressed with how the Sony 35mm f/2.8 has performed with this gimbal and the AF of the lens. While testing out the stabilizer I shot footage inside a BJJ school to try and get a feel for how the AF would work with the Nebula 4000 Lite. The AF is center point only while you have the camera in Movie mode, not Manual. I'm providing a few links of the footage I have so if you're interested you can clearly see the AF in action. I shot the majority of time in APS-C mode and in 1080 60p at 1/125sec. My reasons to shoot in APS-C was to get in closer to my subjects, avoid the look of wide angle, and in particular; eliminate rolling shutter as much as possible ...which the A7S notoriously suffers from. As a matter of fact, I used the Sony 35mm in Full Frame mode and could clearly get rolling shutter whereas in APS-C mode it was reduced considerably and pretty much unnoticeable. I also shot this footage with just the camera and stabilizer, no other attachments. It was difficult for me to frame my shots exactly the way I want, and being limited to center point AF made it even more challenging because of the way I normally compose my shots. I've since decided to shoot with my DP4 attached to the Nebula 4000 and came up with a suitable mounting solution I'm happy with.

footage 35mm at f/2.8 AF
http://youtu.be/hU02J4tVte8

various compilation test clips (all shots were AF)
http://youtu.be/olKTv5I--Qs

same clips in slow motion
http://youtu.be/m9HGJRav7jU
 
I thought about doing something like this and Erik's video did the trick. I took an old Dslr cage with handles, took off the top plate and mounted the gimbal. Just a quick test and the up and downs were in fact improved. And the whole package is still very light.
 
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