wax or gg

does anyone know what the condenser does in the wax g thing? or is it just a macro...
 
xfoo said:
i did and couldnt find anthing on wax... i typed it in haha
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for the record: if you type "wax" or "gg" nothing comes up because these words are too short (whatever that means)

i've been skimming page by page trying to find the answer i'm looking for but i have been tempted to start a new thread.......
 
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With the wax option, has anyone ever experienced any problems with the wax getting soft when shooting during the day or even under those hot lights. Or is there some way around this. Chemistry says no, but I'm just curious.
 
I made dozens of attempts at wax, I found it impossible to make anything useable. A wax layer the thickness of 1 layer of scotch tape had more light loss than an oscillating coarse gg solution. In short I think wax is a dead end.
 
yah.... go with the optisignum or thorlabs gg's... i havnt tried the opti yet but i have been using thorlabs because they are cheaper. has anyone used both of these?
 
Wayne Kinney said:
The optisigma GG i used last year, it gives alot of ghosting.
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by ghosting do you mean double images? i never had that prob but the grain seems a bit coarse an the out of focus parts of the image seem milky or hazy.... is that what you mean?

i know a spinning gg helps a lot with the grain but does it help the hazyness?
 
Yes double image and hazyness, the two are linked in my opinion. If you hold the glass up to a window you can actually see through the glass, so this gives a mix of diffused light and aerial image which gives the ghosting/hazyness
 
what Wayne is saying is that the glass allows some light to come straight through, while some gets diffused, giving a half diffusive image, and half aerial, or uninterupted image. This can result in 3 things, ghosting, hotspot, and haziness. The reason it looks so funny is because the part of the image that is supposed to be blurred and out of focus is only 50% blurred while the other 50% is all in focus (aerial) this causes a wierd effect. i hope this sounds correct.

spinning would not change this issue. always remember, diffusive properties of a gg dont change by spinning or vibrating it.
 
the finer the grain, the more the ghosting problem worsens. you lose diffusion the finer the grain and as result more light just shines straight through (imagine it like you were posishing metal, the finer grit you use the prettier the resulting reflecttion because your making the surface very even. bigger grain diffuses more, but as a result sometimes loses more light. the perfect gg would be something with optimal diffusion/optimal light transmission. they have the beattie, but its scary cuz no one wants to mess it up. i found (now this may seem funny) cheapie brand scotch tape works, now hear me through. find the cheapie scotch tape at kmart or something, not the perfectly clear kind, but the foggy kind. Now lay it in strips side by side over some clear plastic (or glass). its best to lay the strips under running water because its easier to apply without getting bubbles under the tape. anyways, you can see the result but for the finale youll need to spin it or something to get rid of the obvious lines from the seams. i found it has a beuatiful bokeh, and very little light loss, one of the best ive seeen. the only problem i see is that it does not diffuse enough for my 28mm wide angle lens at 2.8, but for anything else besides a wide angle, it does the job beautfully. cheap and effective
 
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