Must see! Free Light Shaping Diffuser.

Park Edwards · Dec 1, 2006

Hello all. Since no one took up my offer to buy a light shaping diffuser from Edmund I ventured out and thought I would see how I could obtain one without paying any money. So thanks man. But in all, that was a great thing. I spent a lot of time asking for samples and never was I able to get a hold of one because they still charged money. Bastards. That's okay to. I then googled up Holographic Diffusers. And that changed it all. There was an article about a company who makes these and just so happens they went into great detail just exactly what Holographic Diffusers are for. Just so happens they are in every lcd screen there is. Nice. 40% of the market used for Holographic Diffusers are in cell phones. I have like 30 cell phones that break every other month and thought what the eff. I took one apart and low and behold there it was $150.00 Holographic Diffuser. Now I have no idea what angle this is, but I did some bokeh tests and they turned out great. The light loss is incredible. I will have screen caps of this later with more available shots. Yes the grain is awful, and only to be used for a vibrating-spinning adapter. I've gone one here, just waiting for the motors. Here is what I had to do with my phone and then the diffuser. This picture if from the front lcd. I had the bigger one in my adapter already. Hope you guys enjoy. If you have any questions, I'm sure I can help.

http://i57.photobucket.com/albums/g240/Car3o/Phone.jpg
http://i57.photobucket.com/albums/g240/Car3o/Diffuser.jpg

Daniel Schaumberger · Dec 1, 2006

Hi Rich,

I had the same idea some time ago but the lightloss was too big. I had a broken 19" TFT monitor and took the plastics & foils out but was disapointed by the big lightloss.

Maybe the cellular foils are the way to go.

Daniel

ovjamaica · Dec 1, 2006

Fascinating. I have a 7" portable DVD player with a cracked screen. I never got around to throwing it away, and now I'm glad I kept it around.

I just broke it open and pulled out two (2) sheets of these diffusers! Incredible.

Both are the size of the LCD screen, so about 3" by 7". Just holding a 35mm lens up to them yields good results, though with noticeable grain. I'll try one of these in a vibrating setup and see how that works. The most promising thing about these would be the elimination of the hotspot. Guess we'll see how it goes.

Inexistence · Dec 1, 2006

ooo great find Car3o!

Park Edwards · Dec 1, 2006

Light Loss=booo=Bokeh=yay!!

Light Loss=booo=Bokeh=yay!!

Here are some grabs from the screen. The light loss isn't what I thought it would be. There's definitely light loss. But on the good side, the bokeh is quite impressive. You can see for yourself.

http://i57.photobucket.com/albums/g240/Car3o/NoAdapter.jpg
http://i57.photobucket.com/albums/g240/Car3o/Adapter2.jpg
http://i57.photobucket.com/albums/g240/Car3o/Bokeh3.jpg
http://i57.photobucket.com/albums/g240/Car3o/Bokeh2.jpg
http://i57.photobucket.com/albums/g240/Car3o/Bokeh.jpg
http://i57.photobucket.com/albums/g240/Car3o/Bokeh4-1.jpg
Can't wait until it's vibrating.
-Rh

ovjamaica · Dec 2, 2006

Yeah, the bokeh is as good as it gets. As others have said before, it's a hard balance between minimal light loss and good bokeh. It's usually you get one good and the other is crappy. But the bokeh on these are as film like as any I've ever seen, at least from my own tests.

Park Edwards · Dec 2, 2006

i'd really like to know what g35's light loss was.

wjm · Dec 2, 2006

I have a broken 2nd generation ipod. Screen is fairly large, but greyscale if I recall. Will this likely have one of these screens, or color LCDs only?

Also, I have an iBook that is fairly DOA - will this work well, or too dark?

Cool info - I'd be interested to see how this progresses.

Park Edwards · Dec 2, 2006

I didn't try the non color lcd's. But give it a shot. The ibook will definitely work. But one guy said his 19 inch lost too much light. Not sure how much. Post it up and we can compare larger screens to smaller ones.

rawfa · Dec 2, 2006

Car3o said:
i'd really like to know what g35's light loss was.

They had 2 versions. One had about half of a stop of light loss and the other one had aroun 1 to 1 and half stop.

leteeci · Dec 2, 2006

Car3o said:
Yes the grain is awful, and only to be used for a vibrating-spinning adapter. I've gone one here, just waiting for the motors. Here is what I had to do with my phone and then the diffuser.

Hi!

I did some "static " tests some months ago,with foil from Nokia phone, and

had some "hotspot" and noticable grain..

Later I bought Canon's EE-A which have less grain/hotspot and less light loss

and I think that is more convenient solution for vibrating design..

I also bought Canon's EE-S... but it's waiting unwrapped for housing/spinning

design..

This "LCD" material is too tin in my opinion, and I wouldn't bother with it for

vibrating design..

but who knows; maybe I am wrong..

cheers :beer:
</IMG>

Park Edwards · Dec 2, 2006

I didn't have a hotspot nor did I have vignetting. The canon screens have some of the most awful bokeh ever and you have to have a good size tube to fit their screen in for a vibrating set up unless you grind it down. Probably not a good size, but I'm using a thorlabs and it's really convenient. I'm in it mainly for the bokeh. The light loss wasn't phenomenal, because most adapters out there lose a fair bit of light.

Park Edwards · Dec 2, 2006

Inexistence · Dec 2, 2006

I'm really diggin' the quality of the shots Car3o. Despite the light loss the images
really have a nice filmlike quality.

Park Edwards · Dec 3, 2006

Edit: I added the less compressed of the 2nd video. It's 40something mb's. It's the 3rd link.

Here is video 1 of 2. The other is uploading now. The first one is around 22mb's and the second one around 31. I'll be honest, so no one is fooled. I'll have to re-up the second clip because the compression, even though it's full, took out most of the grain. You can still see it, but it's not like it should be. I'll re-up but it'll be more around 40mb's or more. That's a while to upload, so it will definitely be tomorrow. You can still check it out. As you can kind of tell it was raining outside. The sun is gone and it's overcast. So the light loss isn't that bad to be honest. I don't have a polarizer and I used 1/18th ND filter. Also had to adjust the iris. The bokeh is crazy good. Just look at the first clip behind the dog. You can see how round it is in the back. The vibrating unit will most likely eleminate all the grain. We'll have to see once I get the motors wich should be later this week. Same settings as the stills because this is the video from it.

And...incase you're wondering, I posted a picture of the phone where I got this paticular screen from. I do believe it's from a Samsung LG camera phone. I just walked in a local verizon shop and asked if they had any broken phones lying around and handed me a couple. Hope that helps some.

http://i57.photobucket.com/albums/g240/Car3o/120306_0149a.jpg

What is your design for the vibrating diffuser like?
A) It's from Daniel's webiste.

Canon 50mm 1.8
Z75 MF15
No CC

http://www.filelodge.com/files/room37/1045520/Poc1.divx
http://www.filelodge.com/files/room37/1045520/Poc2%281%29.divx

wjm · Dec 4, 2006

Here are some dark shots using a holo diffuser obtained from a dead miniDV cam. Vibrating design.

[EDIT - I have changed these to JPEGs for page load considerations. Also, some CCing has been added, really just to lighten them up a bit.]

Sorry they're so badly underexposed - it was late and I couldn't really lug out the lights. I will say that I am looking forward to trying this out in the daytime. From what I can see so far, this gives you MUCH LESS of a HOTSPOT than the Canon Ee-A screen, which I have struggled with of late. It is a dark screen, however, and might be best suited for daylight shots.

Are the screens from cell phones much brighter? I love everything about this (POC) diffuser except:

1. They are FRAGILE - easily scratches, and this shows up clearly even in a vibrating design.
2. They are dark. Mine was from a panasonic palmcorder. Cell phone screens may be brighter?

Inexistence · Dec 4, 2006

I'm wondering about the cell phone ones too if they are considerably brighter
than regular electronic equipment. You can always checkout a replacement
lcd screen for a Razr cell phone or maybe even a Nintendo DS screen.

Park Edwards · Dec 4, 2006

I guess we'll just have to all chip in on what all types of screens can do. I only have the cell phone screens right now. If I run across more types I will definitely post grabs. I want to try out some grey scale lcd's to see if they have the same type of material. The key thing here is it's saving you from buying a 150screen. POC material alone is no less than $99.00. Less of a hassle than dealing with wax.

so far the cell phone screen is producing a sharp image with no hotspot or vignetting. i'm wondering if higher resolution screens have differences.

Park Edwards · Dec 4, 2006

I have a RAZR coming tomorrow probably and I do have a DS but I don't want to crack it open because it still works. Guess ebay is where I'm heading next.

Park Edwards · Dec 4, 2006

I tried the double screen to see if I'd get better lighting. I don't think I placed them in wrong angles because the screens were exactly the same and lined up. They have tabs on the side so I knew they were lined up perfectly. The results were more light loss. Here are some grabs.
1screen:
http://i57.photobucket.com/albums/g240/Car3o/1Screen.gif
http://i57.photobucket.com/albums/g240/Car3o/1ScreenA.gif
http://i57.photobucket.com/albums/g240/Car3o/1ScreenB.gif
http://i57.photobucket.com/albums/g240/Car3o/1ScreenC.gif
2screen:
http://i57.photobucket.com/albums/g240/Car3o/2Screen.gif
http://i57.photobucket.com/albums/g240/Car3o/2ScreenA.gif
http://i57.photobucket.com/albums/g240/Car3o/2ScreenB.gif
http://i57.photobucket.com/albums/g240/Car3o/2ScreenC.gif
I'm actually surprised to see that the light loss isn't that much with the one screen material(to me). That was under a ceiling fan light at or around 60watts. The fan in the picture is about 6fee from me and the table a good 7 or 8.
-Rh

Must see! Free Light Shaping Diffuser.

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