Fiber screens, the future of the 35mm adapters?

Very interesting - now we have two amazing products in development from Greece - Drama camera and this Fiber GG. Wow, good work!
 
Hold your breath... I'm waiting my web provider to increase my web hosting space to put up some more shoots... There is a stop down test with both vibrating and non vibrating with the 28mm...

Also the news from the manufacture of the FiberScreen prot. 4 is "its on its way with the courier"... so next week we will see the behavior in vignette with the FD 24mm F2.8 lenses...

As of G35... I thing the fiber is much less diffused so I don't thing that is a fiber inside the G35...
 
Having played around with fiber GG for a while, I followed this tread wit great intrest.

The main problems I had where:

Hotspot and a cheap bad achromat no condenser lens.

Otherwise I think it can be the future if we get screen without dead fibres.

The light loss is next to nothing and if we could get a fiber GG that is big enough for medium format lenses - that would be great. Zooming in could be less than 35 so the grain would be even more invisible.

I think I have to look into that once more.

Frank
 
Ok after two weeks of efforts to put the full length test shot up on the web, I succeed … At first I tried Vimeo, but the quality was very bad… now I use H.264 with the latest flash player plug-in and a lot of colour management to make it look as I wanted to, on sRGB computer monitors. The best viewing is with Mac OSX computers and sRGB display colour profile. If it doesn’t play just upgrade with the latest flash player your web browser from http://get.adobe.com/flashplayer/.

 So this is the full test of the GG.relay with brevis35 and Varicam. Ohh, Inside Brevis35 is the prototype 3 of the FiberScreen… so no Cinevate ground glass in that Brevis35, just the FiberScreen… The relay used is the prototype of the new GG.Relay rev2… The camera was on shoulder, the whole setup was longer than my Cinestyle Canon zoom HJ11x4,7 KLL SC by 1cm, so shooting in a reporter style was easy… Varicam-F with battery, Chrosziel hand grip and GG.relay > Brevis35 > Zeiss ZF lens 7.2 kilos… in comparison with canon zoom 8.8 kilos… so relay, Brevis35 and Zeiss ZF lens was lighter by 1.6 kilos…! No achromat or condenser lens in the test… just the relay and Βrevis35 with the FiberScreen inside.

 For those that don’t know what is the FiberScreen go to the first post of this thread and read the FAQ… the prototype 3 is with both sides flat… next week I’m receiving the prototype 4 that has one side slightly concave… The prot. 4 I expecting to eliminate vignette even with the FD 24 F2.8…

For the best viewing conditions of the video there is a detailed recommendation on how to check the setup of your system to view sRGB with an acceptable way.

Under the specification there are detailed notes on what is the current setup of front lens, relay, vibrating etc. along with the time stamp of the video.

 The link http://www.motionfx.gr/ggrelay_galery.htm

 Enjoy your viewing; the movie is 17 minutes at 2.7kbits 1280 x 720 and it start playing immediately with a typical broadband connection.

 Waiting comments…
 
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Frank please can you be more descriptive...

What did you like? contrast, detail, bokeh?

You thing that if i build one for the LEX can it be installed?

Because LEX doesn't have interchangeable GG...
 
First of all I was blown away by the overall quality.
Probably the best I saw on a internet stream evar.

I think quite a lot of that comes of the Varicam wich makes briliant pictures anyway.

On the other hand I have quite some experiance with fiberGG and know where the problems with hotspots and frizzy edges are.

You can see it, when you stop vibrating it.

I was amazed how much you can stop down without seeing any grain (but some vignietting) and the way the bokeh responded.

Installing the fiber GG in a LEX woud be a challange, but I think it´s doable.
I would like zo see how my Zeiss medium format lenses would perform on that.

How much light do you loose?

Frank
 
Perhaps you can post a link to a downloadable version. I can't get the web version to play the entire length. It stops right when it gets to the trees and returns to the begining.
 
Sorry guy's it may be a problem with the flashplayer version of your browser... use this link to update your browser http://get.adobe.com/flashplayer/ . It seems that the problem is with explorer... try Firefox (Mozila) or Safari (Apple) if its possible...

In case that you still can't get it to play immediately, or you have problems with playback this is the link to download the video. Use QuickTime to playback, be aware that it may be looking a little bit darker on the midtones, than it looks on the web streaming version (try the adobe flash player once more from the above link, please... I'm a perfectionist...). in any case, this is the link:

http://www.motionfx.gr/Files/Final_with_sound_new.mp4 the file size is 339Mbytes

The original link was http://www.motionfx.gr/ggrelay_galery.htm
 
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Postmaster said:
First of all I was blown away by the overall quality.
Probably the best I saw on a internet stream evar.

I think quite a lot of that comes of the Varicam wich makes briliant pictures anyway.

On the other hand I have quite some experiance with fiberGG and know where the problems with hotspots and frizzy edges are.

You can see it, when you stop vibrating it.

I was amazed how much you can stop down without seeing any grain (but some vignietting) and the way the bokeh responded.

Installing the fiber GG in a LEX woud be a challange, but I think it´s doable.
I would like zo see how my Zeiss medium format lenses would perform on that.

How much light do you loose?

Frank
Click to expand...

I forgot to answer the last one... I compare it with Brevis CFX and its darker by 1/3 stop
 
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The clip looks great! I would agree that there are some challenges here, but once some yield issues are sorted, don't be too surprised if you see a strange CINEFUSE option for the Brevis in the next quarter :) The interchangeable element system was designed with a look to the future and I think we've demonstrated that committment with no less than 8 element options right now. I love the fact that you're taking advantage of that feature Evangelos as we've just added our first "user driven" improvement to our catalog. David Smith developed a nice little focus hook retrofit, which we agreed to sell for him (it's called the "David Smith" focus hook!). I know there are folks far smarter than me out there working with our products! I've always insisted on modularity in our desing for just this reason.

Cheers,
Dennis.
 
I finally got a chance to watch the entire clip. It does look nice. I did notice a bit of hot-spoting when you were panning across the trees and stopping down. Not sure what, if anything can be done about that. It wasn't horrible, just noticed it when you're panning.

Did I understand correctly that your next version will have a curved side? Is the intent to act like a built in condenser lens?
 
mvansomeren said:
Did I understand correctly that your next version will have a curved side? Is the intent to act like a built in condenser lens?
Click to expand...

Exactly, but it has to do more with the change in the angle of rays in order not to be telecentric... OK its not easily understood but its an experiment... the only thing that I have to figure out is the radius of the curve...

Dannis, thanks for your kind words... I was always believed in modularity which I thing is the strong point of Cinevate product line... it secures clients investemnt for the years to come...

What I like in the FiberScreen is the lack of diffusion... Because I do DI and film recording, when I used PRO35 or adapters, I was always facing the heave diffuse, that in film projection wasn't a good thing... so with this FiberScreen, I thing I have solved that problem...
 
knowhate said:
Hello Evangelos. This looks very interesting indeed.

What do you mean when you say to change the angle not to be telecentric?
Click to expand...

The Fiberscreen can accept the light in 180 degrees, so even with very wide lenses their is no problem to enter the fiber... But on the exit it comes out telecentric, thats vertical from the GG plane... it seems that this is a problem... so by creating a slight concave, on the side that looks the camera, it will send the light with the correct angle to the lens... so that is minimizing the vignetting...

This can be seen in the test video... if you have observed closely the video (http://www.motionfx.gr/ggrelay_galery.htm ) at 01:10 for the 50mm and at 16:20 for the 28mm, while I'm changing the aperture the vignette doesn't change... when I was tried the prototype 2, that it was convex on one side, the vignette was three times worst, but the vignette again didn't change with the aperture... that make me have the theory, that FiberScreen doesn't have a problem in the entry, but its the exit that makes the vignette... so by forming the angle of exit I will get minimal vignette...

Tomorrow I will have on my hands the prototype 4... I will post my findings...
 
Great footage (and I am totally digging the sound). I agree that the stop down is pretty amazing. Dennis, what did you mean by a starnge Cinefuse option in the next quarter?

Evangelos, which did you say was darker the CFX or your element?

Keep us posted
 
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