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FORUMS Photo Sharing & Visual Enjoyment Still Life, B/W & Experimental 
Thread started 15 Oct 2009 (Thursday) 10:31
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Welding Glass (£1/$1 ND Filter) Exposures

 
tkerr
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Nov 24, 2010 09:53 |  #796

When only securing the glass filter in front of the camera lens with rubber bands you're also allowing light in from the backside of the glass that will create reflection within the glass. In addition to taping the edges you should preventing light from getting to the exposed backside of the filter glass that encircles the camera lens. That should help considerably as well.

I made a simple lightweight holder made from layers of 3/16" plywood. It hooks onto the end of my camera lens and allows me to slide the glass filter in and out. No light leaks or reflections


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Anke
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Nov 24, 2010 10:02 |  #797

tkerr wrote in post #11338758 (external link)
When only securing the glass filter in front of the camera lens with rubber bands you're also allowing light in from the backside of the glass that will create reflection within the glass. In addition to taping the edges you should preventing light from getting to the exposed backside of the filter glass that encircles the camera lens. That should help considerably as well.

I made a simple lightweight holder made from layers of 3/16" plywood. It hooks onto the end of my camera lens and allows me to slide the glass filter in and out. No light leaks or reflections

Good point, I hadn't thought of that. Perhaps time to make a dedicated holder for the glass.


Anke
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Ronin ­ Silv
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Nov 24, 2010 10:50 |  #798

I'm looking into making a holder that I can slide the glass in and out of using an adaptor ring as a base with a frame to the glass in to.


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Anke
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Nov 24, 2010 11:03 |  #799

Ronin Silv wrote in post #11339023 (external link)
I'm looking into making a holder that I can slide the glass in and out of using an adaptor ring as a base with a frame to the glass in to.

What out of? Will you keep us all posted on the build?


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Nov 24, 2010 11:18 |  #800

My welding glass fit straight into a Cokin P holder that I bought dirt cheap on Ebay. Bit of tape to fix any sharp edges and light leaks and all is good to go. Just slots onto the ring adapter like normal.




  
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Scottdog129
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Nov 24, 2010 11:24 |  #801

scubthebub wrote in post #11335854 (external link)
hm.. must have missed that one. I'll definitely have to try it. Thanks :)

No sweat! Good luck!

Anke wrote:
I can account for this for sure :smile:

I think it was you that posted it! :)


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Scottdog129
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Nov 24, 2010 11:25 |  #802

jj_glos wrote in post #11339179 (external link)
My welding glass fit straight into a Cokin P holder that I bought dirt cheap on Ebay. Bit of tape to fix any sharp edges and light leaks and all is good to go. Just slots onto the ring adapter like normal.

What size of glass did you get? The one I have wont fit in my P series holder??? Its 4.5x5.25"


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jj_glos
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Nov 24, 2010 11:48 |  #803

A quick measure and it's 83mm by 112mm (3.26"x 4.4"). Mine was sourced from a seller here in the UK on Ebay (http://shop.ebay.co.uk …=&_armrs=1&_fro​m=&_ipg=25 (external link)). Looks like the sizes here in the UK are a better match? It did take a bit of forcing to get it in the holder, but brute force is my forte :D I'll see if I can get a pic sorted.




  
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Scottdog129
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Nov 24, 2010 11:49 |  #804

jj_glos wrote in post #11339302 (external link)
A quick measure and it's 83mm by 112mm (3.26"x 4.4"). Mine was sourced from a seller here in the UK on Ebay (http://shop.ebay.co.uk …=&_armrs=1&_fro​m=&_ipg=25 (external link)). Looks like the sizes here in the UK are a better match? It did take a bit of forcing to get it in the holder, but brute force is my forte :D I'll see if I can get a pic sorted.

Yeah, thats much smaller than mine. Ill have to look for the smaller one the next time I drop the one I have on the rocks at the lake. :)


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Ronin ­ Silv
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Nov 24, 2010 12:36 |  #805

Anke wrote in post #11339091 (external link)
What out of? Will you keep us all posted on the build?

I've some thin scrap alli knocking round I was thinking of cutting some strips to fit bending it round so the glass slots in then using self tappers drill some holes in the alli and adaptor and screw together filling off the screw ends so they are flush on the inside of the folds.


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chriswebb86
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Nov 25, 2010 15:13 as a reply to  @ Ronin Silv's post |  #806

First attempt with Welding Glass.

IMAGE NOT FOUND
IMAGE IS A REDIRECT OR MISSING!
Byte size: ZERO | Content warning: NOT AN IMAGE



  
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Scottdog129
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Nov 25, 2010 15:27 |  #807

kyleturbo wrote in post #11333188 (external link)
Just saw this thread a couple days ago. It may not be some Lee glass, buts its 500% better than stacking.

Whoa!!! Thats AMAZING!!! Great stuff!


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Anke
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Nov 25, 2010 21:56 |  #808

chriswebb86 wrote in post #11345411 (external link)
First attempt with Welding Glass.

IMAGE NOT FOUND
| Byte size: ZERO | Content warning: NOT AN IMAGE


Looks great, Chris. Nice work, would like to perhaps see it a tad lighter though, anyone else?


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gearedforacure
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Nov 25, 2010 22:47 |  #809

I was thinking the same, maybe the snow doesnt need to be white, but I would like to see the whole thing lighter.

That said, its pretty sweet.


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tkerr
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Nov 27, 2010 13:42 |  #810

Went to the beach today to test this filter out on some waves along the fishing pier. All I found when I got there was calm seas. The waves were only about 1 to 3 feet with 10 to 20 second intervals. I should also have gone down earlier in the morning rather than around noon when the sun was so high and bright.

IMAGE NOT FOUND
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HTTP response: NOT FOUND | MIME changed to 'text/xml'

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Welding Glass (£1/$1 ND Filter) Exposures
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