Flashlightlens.com Light Diffusion Film (LDF)

[shilent]

Anyone got any before and after pictures with their LDF lens? I'm thinking of getting this for my 3D Mag Rebel.

 

[PayBack]

What does it cost?

Glad press'n'seal works well and is cheap... AND you can even use it to wrap food! :O

I got the idea here years ago... thanks whoever you were.

 

[timbo114]

http://www.flashlightlens.com/str/index.php?app=ccp0&ns=prodshow&ref=ldf_raw

I have purchased some diffuser film HEREand HERE

 

[shilent]

What does it cost?

Glad press'n'seal works well and is cheap... AND you can even use it to wrap food! :O

I got the idea here years ago... thanks whoever you were.

How exactly would one use Press'n Seal? Isn't it just plastic wrap?

http://www.flashlightlens.com/str/index.php?app=ccp0&ns=prodshow&ref=ldf_raw

I have purchased some diffuser film HEREand HERE

Got any before and after beamshots?

 

[Gryffin]

How exactly would one use Press'n Seal? Isn't it just plastic wrap?

Yes. And no. ;)

Yes, it's intended for wrapping food. However, what makes it different from good ol' Saran Wrap is that it's slightly adhesive; it sticks best to itself, which works well for wrapping; but it also sticks fairly well to any other smooth surface, like a flashlight lens. It's also translucent, with a sort of matte finish, which is why it works well as a diffuser.

 

[737mech]

I don't have any beamshots but I recently got one of these lenses from flashlightlens.com. It will seriously kill any throw from your light but it will smooth out a terrible beam. It makes your light pretty floody and in my opinion kills some overall output as well... at least to my eyes. I have also tried the Glad Press N Seal and its virtually the same thing. Try the Glad stuff first before you buy the lens is my recommendation.

 

[LeifUK]

I've not tried LDF, but I have the Fenix flip up diffuser, and it does reduce the hotspot and slightly increase spill. But the reduction in overall output is seriously big, and I do not use it for that reason.

In the UK you can buy rolls of transparent sticky tape about 1cm wide, with a frosted surface. I wonder if that would work?

 

[shilent]

I'll give the Glad Press'n Seal a try. I'll try to put up some beamshots on Sunday when I got some free time.

 

[gcbryan]

I've tried it and it works to a point. I does seem to be directional though...it's not an even beam.

I'm not sure it is the material though. I guess the emitter itself throws light out to the sides.

Maybe the key is to use more diffusion film. Anyone else have this problem?

 

[timbo114]

OK.. here's what I have for you ..
This film is from FASTCAR in the 1st link I provided above ..

5= beam smoother, makes hot spot wider, removes 90-100% of all artifacts,blends center and spill better,trades a bit of throw for more flood effect

10=100% wall of light, 100% reduction of atrifacts..even on the worst lights made,totally floody, no hot spot,creamy smooth with no shadows , even light

These shots are @ 8" from white surface - imagine the fuller beam at distance of say 10-18 feet.
I have no dark room at this time to show you.


top..no film - watch the hot spot and corona change (shows up better in the green photos)

middle..5 layer - corona softens and gets brighter

bottom..10 layer hot spot blends larger into even softer, brighter, bigger corona - this effect would light an entire wall or room at a greater distance

 

[rayman]

Order a lens with the LDF for my bikelight. Really like the lens with LDF. It's great for biking. You can't really see it on the pictures but the spill is not as intense but much wider with the LDF.

The two pictures above are the normal UCL lens and the two pictures below are with LDF. Is kind of hard to get a good comparison by just looking at this pictures but I think you'll get a idea. The pictures on the left are underexposed. You can also kind of see the direct reflections of the door slightly above the hotspots.

rayman

 

[Turbo DV8]

I've tried it and it works to a point. I does seem to be directional though...it's not an even beam.

I'm not sure it is the material though. I guess the emitter itself throws light out to the sides.

Maybe the key is to use more diffusion film. Anyone else have this problem?

The Glad is "polarized" in that depending how it is applied, will spread the beam out in one plane more than the other (think "Milky Way galaxy"). I apply it to favor horizontal dispersion. It's just odd that it does this, and I don't know why. There is no way to tell from looking at it which way it will favor, one just has to put it on and note the planar emphasis, then readjust to one's liking.

 

[robostudent5000]

just a heads up for future users, Glad Press'n Seal can leave a sticky, hard to remove residue on plastic lenses. very hard to remove. alcohol won't dissolve it. ended up ruining a polycarb lens this way.

 

[LeifUK]

CPF user PhaserBurn has pointed out that D-C-Fix does a good job. This is known to people of a certain age in the UK as sticky back plastic. Cheap and effective. I bought some in the CPF market palce, but ebay has it too.

 

[mrlysle]

I bought two sheets of DC Fix diffusion film from CPF member phaserburn, and this stuff is really great! I bought it because of the beam on my Fenix PD31, which I thought was horrible! The film made it beautiful and perfect. The stuff is German made and very high quality. I believe someone tested it for transmission losses and reported only 2 or 3% loss if I remember correctly. Look at it here: http://www.cpfmarketplace.com/mp/sh...urn-s-Diffusion-Film-DC-Fix-CPF-Service/page3
Anyway, I'm very happy I got it. Try some. Dave is great to work with and has prompt service. :grin2:

 

[robostudent5000]

I bought two sheets of DC Fix diffusion film from CPF member phaserburn, and this stuff is really great! I bought it because of the beam on my Fenix PD31, which I thought was horrible! The film made it beautiful and perfect. The stuff is German made and very high quality. I believe someone tested it for transmission losses and reported only 2 or 3% loss if I remember correctly.

I remember seeing some older posts about this stuff and it looked promising. thanks for the CPFMarketplace link. I was having trouble finding the post.

 

[mrlysle]

Your welcome! The DC Fix really is great at fixing nasty beams. I have way more than I need, but if anything would ever happen, and they quit making it, or it became hard to come by, I think I'll be ok. It's not too often you have a light with a really bad beam but when you do, this stuff is the ticket!

 

[eksiray]

I use Rosco theater gel (Or ABC or one of the others) when I need a diffuser. All of the theater gel companies have several "diffuse" type gels. For a small light a piece cut from a sample swatch book works fine.
Some of the films listed above cost $2/in2- are they worth that much?