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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

 
b-rice
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May 24, 2012 08:17 |  #1921

CameraMan wrote in post #14475655 (external link)
In Ohio? Good luck. :)

I like trying to find stuff that people haven't though of yet. I did one on I75 in the middle of Atlanta and it came out pretty neat looking. Mine is green so it kind of fit with the whole End of the World theme I had going on there. But you don't need water to make interesting things with this. Really, anything that moves produces interesting results.

So I've seen some where people are able to go for longer than 30 seconds. Would I need to take multiple shots and then stack the photos?




  
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Headsick
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May 24, 2012 11:48 |  #1922

b-rice wrote in post #14477903 (external link)
So I've seen some where people are able to go for longer than 30 seconds. Would I need to take multiple shots and then stack the photos?

You'd need a remote trigger and put the camera in bulb mode.


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b-rice
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May 24, 2012 16:27 |  #1923

Headsick wrote in post #14478835 (external link)
You'd need a remote trigger and put the camera in bulb mode.

Duh. :o Sorry, I was being an idiot. :p




  
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Anke
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May 24, 2012 17:47 |  #1924

These are nice, I love the colouring.


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Littlejon ­ Dsgn
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May 24, 2012 18:58 as a reply to  @ Anke's post |  #1925

I am wondering how you guys fasten the welding glass to the lens, or do you just hand hold it? Is there a preferred glass to get? I am going hiking in Silver Falls state park on Saturday and would like to try some long exposures out. I have access to some glass at work, or can hit a local welding shop at lunch.




  
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InPhoto
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May 25, 2012 02:06 |  #1926

Littlejon Dsgn wrote in post #14480822 (external link)
I am wondering how you guys fasten the welding glass to the lens, or do you just hand hold it? Is there a preferred glass to get? I am going hiking in Silver Falls state park on Saturday and would like to try some long exposures out. I have access to some glass at work, or can hit a local welding shop at lunch.

I had my glass cut then bluetaked on a cokin filter holder. This way I can use it on most of my lenses.
Front

IMAGE: http://www.mediafire.com/conv/8b37bdd174b004ddafdc38916d8c80f6a1f5349fe86c3b5f10d8a0ff3cfa90e76g.jpg
and back
IMAGE: http://www.mediafire.com/conv/5461e0e27cb320154d260c0aeb4c26be46300f3a39f502488b010d0e8b06ccd36g.jpg

Some simple photos

  
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Littlejon ­ Dsgn
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May 25, 2012 10:25 as a reply to  @ InPhoto's post |  #1927

Ok so I picked up a shade 10 and 12 today from work, I have two step up rings in my Amazon wish list, my plan is to have the glass cut then silicone it onto the step up rings. Should I go with a 58mm-77mm or would a 58mm-62mm be fine (what’s your thoughts)?

But I am wanting to try this out asap, my hoods are all full round hoods so the rubber band method won’t work without a little cutting. Has anyone tried to hand hold the glass on the front of the lens? I will see what I can fashion up tonight before tomorrow’s trip to Silver Falls State Park (10 water falls in an 8 mile hike :D )




  
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StretchSTI
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May 25, 2012 11:00 |  #1928

A few people have used big rubber bands and run them back around the body of the camera... I know there a photos of it somewhere in the thread.


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Marm ­ O. ­ Set
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May 25, 2012 11:02 |  #1929

Littlejon Dsgn wrote in post #14483490 (external link)
But I am wanting to try this out asap... Has anyone tried to hand hold the glass on the front of the lens?

Yes, I tried to hand hold it and light bypassed the filter and overexposed the image. I don't recommend this method.

I used masking tape to hold the lens to the lens/body. It's far from ideal but it worked. I will eventually cut down my glass to fit inside the Cokin adapter because that is by far the most elegant way af attaching that I've seen so far...


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Littlejon ­ Dsgn
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May 25, 2012 11:07 |  #1930

StretchSTI wrote in post #14483622 (external link)
A few people have used big rubber bands and run them back around the body of the camera... I know there a photos of it somewhere in the thread.

I figured that’s what I would have to do, I may try and notch the hood, it’s a cheap knock off so it’s no big deal (can’t use it on my 18-55 anyways it stick out into the picture to much) so a few notches and reveres mount and it may just work till I get my step up rings and cut the glass.




  
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Canajun
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May 25, 2012 20:25 as a reply to  @ Littlejon Dsgn's post |  #1931

Did anyone tried using this method to use at last weeks Solar eclipse? Not so much for the long exp but more for filtering. I had prior commitments and couldn't bring my gears.:(


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May 25, 2012 23:18 |  #1932

Canajun wrote in post #14485545 (external link)
Did anyone tried using this method to use at last weeks Solar eclipse? Not so much for the long exp but more for filtering. (

I was actually going to test it out one day and try and get a quick shot at the sun with the glass on the lens.


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Skaperen
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May 26, 2012 00:11 |  #1933

b-rice wrote in post #14477903 (external link)
So I've seen some where people are able to go for longer than 30 seconds. Would I need to take multiple shots and then stack the photos?

Actually, why not? Why not do it this way? You won't have to get such extreme filter density this way. Suppose you want a 30 MINUTE exposure. Shoot 60 exposures of 30 seconds each and stack them. You might see a few artifacts from the couple of seconds between exposures. Just have a good power source. Doing a real 30 minute exposure would require 60x the density of the filter.


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Canajun
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May 26, 2012 11:10 |  #1934

CameraMan wrote in post #14486134 (external link)
I was actually going to test it out one day and try and get a quick shot at the sun with the glass on the lens.

I'm thinking of doing the same. I just haven't played much since my first try (and failed miserably on WB adjustments :().

You never know. You might get some really cool effects. Please post your results.


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May 26, 2012 11:52 |  #1935

WB is tough with certain types of glass. They're all different from what I'm hearing. Mine are heavy on the green side and the other is heavy on the yellow side. Adjusting color takes a lot of work. I was thinking about playing around with my color wheel one day and try to fix the color by adding opposite colors to see what I get.


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