Movietube JR - New 35 Adapter from Kinomatik

Movietube jr tested

Movietube jr tested

I'm new to this forum stuff but being a movietube jr user is a good reason to start.

First off: I'm a switcher. I used the Letus extreme and I was rather disappointed by the vignetting and the (in my opinion) rather low quality of the image. The screen itself had shades in it that wouldn't go away even if the screen vibrated. Furthermore I was totally unnerved by the rather complex focus adjusting.

In comes the movietube jr: Ruggedly manufactured (same as the Letus, which was one of the reason I switched, since I acquired a Zacuto rig adapted to the Letus), the jr is a purely optical system. People seem to forget that its prize is so high because of the high precision optical innerings!

The first thing that struck me is that the image output by the adapter is in circle shape. My camera is set to 33.8 Zoom, the circle covers the whole image and there is no, and i mean noone whatsoever vignetting!!!

Apparently the optics of the hvx200 are not always well centered, so that might require more zoom to cover the whole sensor area... I hear a zoom of 36 is normal.

Next thing: the Canon lens mount. Not as neatly resolved as on the letus and the Canon choice seemed odd and annoying, since I looooove my Nikon lenses, I tried a Nikon adapter and it worked perfectly well. I guess for future improvements a modular lens mount system might be a good idea. But for now this little workaround works.

The handling: Imagine switching your camera to infinity focus and you're all set, no fussing around. That's what I call easy to use! Losing focus on the Letus adapter on set was a real pain and waste of time.
Not to forget: No mechanical & electronic parts that can break or even be forgotten to be switched on!

Finally: The image quality
No comparing to the letus extreme. The image quality is superb. I'm using Nikon 35mm prime lenses and I'll be shooting a test video in the near future where anyone can check out the quality themselves.
The bouquet is unique, very soft but you'll see....
Sometimes I'd like to remove the adapter (for steadicam use in tight spaces e.g.) and keep the same image quality, not a problem with the movietube jr but try that with the Letus Extreme....

One last thing that almost never gets mentionned in these kinds of forums is customer service:
Kinomatik was very responsive and helpful when it came to adjusting the adapter.
Letus was too, once I got a hold of Hien, which is not an easy task...I'm not sure if my emails got lost or if he's just too busy. (Once I had Zacuto get him to contact me back)

My conclusion: Both adapters have their advantages but are not in the same league. My comparing them might not seem fair, since now Letus has its Ultimate model. Back when I switched (mid-may) I only had that choice. I have absolutely no regrets. My letus is available on ebay....
 
Last edited:
Yeah, I used this at Cinegear and all I could see was grain at WIDE OPEN apertures. Several other DVXusers were there and they said the same thing. It's unusable IMO.
 
What is the whole deal with the "Static" screen? I can't find any internal details. Curious if it can support high shutters, skies, and fast motion.
 
High Shutters - It should at wide open apertures.

Skies - It should at wide open Apertures

Fast Motion - It should at wide open apertures.

Does it? From what I saw at Cinegear output to a monitor it was grainy for days at wide open apertures. I want to say that maybe it was a defective unit? But how defective can a non-moving parts peripheral get?

The G35, the "other" static solution, looks like a much better choice. You could clearly see that wide open in their newest test footage the grain wasn't showing up.
 
Grainy movietube picture?

Grainy movietube picture?

I'm always working with wide open apertures to get that dof feeling and I never noticed any grains.

This WE I'll be shooting action sequences with high shutter speeds and in broad daylight on the movietube jr. I'll get back to you for the results.

Before I forget:
One thing that totally annoyed me on my Letus was the following: Light sources in the field of view made horrible dust specks appear, even though the lenses were clean! That is something that the movietube handles very effectively.
 
Just for the record, static adapters have no limitations with shutter speed but the ground glass pattern becomes visible once closing the lens down to f5.6 and beyond.
 
I'm always working with wide open apertures to get that dof feeling and I never noticed any grains.

This WE I'll be shooting action sequences with high shutter speeds and in broad daylight on the movietube jr. I'll get back to you for the results.

Before I forget:
One thing that totally annoyed me on my Letus was the following: Light sources in the field of view made horrible dust specks appear, even though the lenses were clean! That is something that the movietube handles very effectively.

I can respect all of what you said. The Extreme had some dust issues that got corrected and the Ultimate hasn't had any dust issues since I got it. at least not any that weren't caused by myself from dismantling it, and even then it was a breeze to get rid of the dust. But when the dust was in the Extreme boy did it irk me. Can't deny that.

As far as the Movietube and it's wide open apertures: a lot of us actually do not shoot with wide open apertures because still/SLR lenses are garbage wide open. Some Cinema Primes are no different, so shooting wide open adds anomalies that a lot of us do not want. Naturally if that's fine with you then hells to the yeah, shoot it up. But for a lot of us shooting wide open all the time isn't ideal.
 
I think satic is the holy grail IMHO. I think their wax screen is the right way, just I wish we could get it further along in the mainstream. It seems like a good path. For one thing even if dust was an issue, you could still have a slight vibration system similar to some Digital still cameras to remove its appearance.

I just got footage from a static DIY with home made wax screen that is some of the sharpest footage I have seen. Smooth with out any grain what so ever....


Just for the record, static adapters have no limitations with shutter speed but the ground glass pattern becomes visible once closing the lens down to f5.6 and beyond.
 
The white area glow is:

If you search and find the video shoot by Philip in down town Vegas with the Letus Ultimate, you will notice where ever there is a big highlight area (like a big guy white shirt) there is a spill on the dark neighboring areas its like a glow effect, its not the common "promist" look, its a glow.

Its being generated by the light energy that falls to the tiny GG and spils the surroundings, normally this is not existing.

I don't thing that their is a GG that fixes that.

Hi Evangelos

Don't use my shorts for examples of failings of adaptors as they are heavily graded using all sorts of stuff on them, especially "Deer Vegas". If I posted clean footage feel free to examine that more thoroughly. Mind you I have no plans to post anything more than stills of ungraded footage as I am about shooting not analyzing.
 
Ok, Philip I understand.

Do a test, when you can, on a sunny day put a white A3 size paper over a black board, overexpose by 4 - 5 stops the white paper, move the camera slightly and try to see on your footage the amount of flare that is being introduced by GG. The flare is a nice side effect of GGs, but same times its bad, because you can't control it. It is very difficult to control highlights in a big area of a GG without spilling the surrounding area. The result is similar to a very light promist filter. You can check the lens flare performance on your DSLR to understand the difference.

On fiber screens, I have observed, that this effect is non exist even in 8 stops over... the fiber takes the image from one side, not diffused, and tunnels that to the other side without spilling the neighboring tunnels (fibers), so thats maximum performance in keeping the same contrast from input to output. This is not possible with diffused surfaces due to physical constraint's. The fiber screen is perfectly polished on both sides like a glass window... When I will have one I will send you to play on Brevis...
 
Back
Top