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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

Motion mount vs ND glass

Nick, from my contact person in support my understanding is that as long as your under ND4, there shouldn't be any bokeh issues when using wide aperture lenses. If you need to go above ND4 you need to attach a traditional ND filter on the front to bring it down and then adjust with the MM. It does depend on the specific lens as your approaching ND4 but thats the general rule. See my thread from a couple months ago

http://www.reduser.net/forum/showthread.php?148492-Motion-Mount-Clarification&highlight=


Nick Morrison said:
I think this needs some clarity. You can't shoot wide open on FAST APERTURE glass on a motion mount. Ie no 1.2/1.4 or f2 WIDE OPEN. But you can go wide open at 2.8 or f4. We do it all the time. No issues.

We use Motion Mount for EXTERIOR WORK, at an f4 / 5.6 / f8. Works amazing. VERY CLEAN.
Click to expand...
 
I think the MM will really shine on Helium, since the lack of ND0 is a bit less important here. On the other hand, with Dragon you could swap the OLPF to get back a little more light compared to the STH-OLPF.

Totally wish we would see a 2nd-generation MM soon, there is room for improvements here and there. And hey, there is no MM for VV-sized sensors yet. :)
 
If anyone has a MM and new Helium, would be cool to see some footage or hear some feedback on how it is working for you.
 
Chad this makes sense.

When we're in Global Shutter mode (which limits you to 4 stop ND anyway), we've had no issues of any kind, at any aperture.

The Motion Mount is amazing tech.

Chad Lancaster said:
Nick, from my contact person in support my understanding is that as long as your under ND4, there shouldn't be any bokeh issues when using wide aperture lenses. If you need to go above ND4 you need to attach a traditional ND filter on the front to bring it down and then adjust with the MM. It does depend on the specific lens as your approaching ND4 but thats the general rule. See my thread from a couple months ago

http://www.reduser.net/forum/showthread.php?148492-Motion-Mount-Clarification&highlight=
Click to expand...
 
WesG said:
Would be great to see a MkII version on the MM which will also work for VV
Click to expand...

It would be a VV motion mount, as it would need to be sized to fit the VV sensor I would imagine it would not fit in the cavity of the cameras with smaller sensors.
 
I guess like many toys, the motion mount is great when you know what to use it for and its limitations. I had a recent shoot where I was operating in the water and the DP wanted to talk shop about the gear and I was trying to explain that I would not be eating up shooting time by swapping filters as my motion mount is essentially internal ND. I know that is misleading in the sense that it is not a physical ND sliding into place like on Amira and Mini and then it was hard to explain, kind of because I am not a tech guy, that the motion mount is electronic and kind of controls the shutter. Then this opened up a can of worms about whether it maintained 180deg or will it cause strobing etc to which I tried to explain (without really know why or how) that it does maintain a 180deg shutter vibe but just bloody trust me itll be great ha ha

So, can one of you tech guys explain in simple kindergarten language how and why the motion mount ND works?
 
Lee Kelly said:
So, can one of you tech guys explain in simple kindergarten language how and why the motion mount ND works?
Click to expand...



Not a lot of info out there since RED picked up the technology that they then built on, but you may pick up some clues from this clip captured at Createasphere in 2011:

https://www.youtube.com/watch?v=g2s5_pZqjPU

About the only "reveal" I remember Jarred mentioning is that RED is using optical glass versus the polymer Tessive was utilizing.
 
Lee Kelly said:
I guess like many toys, the motion mount is great when you know what to use it for and its limitations. I had a recent shoot where I was operating in the water and the DP wanted to talk shop about the gear and I was trying to explain that I would not be eating up shooting time by swapping filters as my motion mount is essentially internal ND. I know that is misleading in the sense that it is not a physical ND sliding into place like on Amira and Mini and then it was hard to explain, kind of because I am not a tech guy, that the motion mount is electronic and kind of controls the shutter. Then this opened up a can of worms about whether it maintained 180deg or will it cause strobing etc to which I tried to explain (without really know why or how) that it does maintain a 180deg shutter vibe but just bloody trust me itll be great ha ha

So, can one of you tech guys explain in simple kindergarten language how and why the motion mount ND works?
Click to expand...

This thread sparked my curiosity on the subject of LCD shutters, which appears to be the technology behind the Motion Mount. From my brief research is sounds like the tech has some limitations such as high shutter speeds, light transmission, and polarization. From what I read, it's difficult to get a LCD shutter to go above 1/160s, but I could be totally wrong about this... Since the Helium sensor is undoubtedly more sensitive, I doubt light transmission would be a issue. Personally, I'd just like to see a more powerful Motion Mount with less artefacts. Hopefully, the technology allows for that.
 
Does the ND within the MM have a polarizing effect compared to variable NDs? Right now that's my only hesitation. I don't want to dull the highlights on skin tones. Thank you for any responses
 
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