Approve the Cookies
This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and our Privacy Policy.
OK
Index  •   • New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Guest
New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Register to forums    Log in

 
FORUMS Photo Sharing & Visual Enjoyment Still Life, B/W & Experimental 
Thread started 15 Oct 2009 (Thursday) 10:31
Search threadPrev/next
sponsored links
(this ad will go away when you log in as a registered member)

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

 
mhambi
Mostly Lurking
12 posts
Joined Jun 2012
Location: UT
     
Dec 10, 2013 17:12 |  #2371

Lisbon Falls, Mpumalanga, South Africa

IMAGE: http://i40.tinypic.com/ok4ehk.jpg

Where nameless men by nameless rivers wander, and in strange valleys die strange deaths alone.

  
  LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as a registered member)
InPhoto
Cream of the Crop
15,184 posts
Likes: 17224
Joined Jan 2011
     
Jan 06, 2014 11:10 as a reply to  @ mhambi's post |  #2372

IMAGE: https://www.mediafire.com/convkey/a225/9xk9d77a882k8xx6g.jpg

Some simple photos

  
  LOG IN TO REPLY
InPhoto
Cream of the Crop
15,184 posts
Likes: 17224
Joined Jan 2011
     
Feb 11, 2014 07:14 as a reply to  @ InPhoto's post |  #2373

IMAGE: http://www.mediafire.com/convkey/552f/7y7798i36qlx16c6g.jpg

Some simple photos

  
  LOG IN TO REPLY
marcwilliams88
Senior Member
Avatar
407 posts
Likes: 85
Joined Aug 2011
Location: Cardiff, Wales
     
Feb 17, 2014 17:08 |  #2374

Recent trip to London... took out the Hoya NDX400 and Welding Glass... still chose this £2 hack over the £80 filter. Love it. :lol:

7D, 17-55/2.8 and Welding Glass used

'Still at Tower Bridge'

IMAGE: http://farm3.staticflickr.com/2822/12600022893_5f2d94c57d_b.jpg
IMAGE LINK: http://www.flickr.com …arcwilliams88/1​2600022893  (external link)

Hot Picsel Photography | Portfolio here... (external link)
flickr (external link) | Canon EOS 7D | EF 24-70 f/4L | EF-S 24 f/2.8 STM | EF 70-200 f/4L | Full kit list

...the camera takes an image, imagination makes the photograph

  
  LOG IN TO REPLY
Anke
THREAD ­ STARTER
"that rump shot is just adorable"
UK SE Photographer of the Year 2009
Avatar
30,454 posts
Likes: 2
Joined Oct 2006
Location: Royal Tunbridge Wells, UK
     
Feb 18, 2014 06:06 |  #2375

^ Nice. Very nice.


Anke
1D Mark IV | 16-35L f/2.8 II | 24-70L f/2.8 II | 70-200L f/2.8 II | 50 f/1.4 | 600EX-RT and ST-E3-RT
Join the Official POTN UK South-East Thread | Follow me on Twitter (external link) | Tunbridge Wells (external link) | Flickr (external link)

  
  LOG IN TO REPLY
InPhoto
Cream of the Crop
15,184 posts
Likes: 17224
Joined Jan 2011
     
Mar 02, 2014 19:48 as a reply to  @ Anke's post |  #2376

IMAGE: https://www.mediafire.com/convkey/9287/l3ld52zsd09yh0m6g.jpg

Some simple photos

  
  LOG IN TO REPLY
marcwilliams88
Senior Member
Avatar
407 posts
Likes: 85
Joined Aug 2011
Location: Cardiff, Wales
     
Mar 08, 2014 00:41 |  #2377

Golden Gate Bridge, San Francisco, CA.

7D, 17-55/2.8 & Welding Glass used

Ghostly Crossing

IMAGE: http://farm8.staticflickr.com/7334/13004220023_870076099d_c.jpg
IMAGE LINK: http://www.flickr.com …arcwilliams88/1​3004220023  (external link)

Hot Picsel Photography | Portfolio here... (external link)
flickr (external link) | Canon EOS 7D | EF 24-70 f/4L | EF-S 24 f/2.8 STM | EF 70-200 f/4L | Full kit list

...the camera takes an image, imagination makes the photograph

  
  LOG IN TO REPLY
Viperr
Member
161 posts
Likes: 52
Joined Oct 2011
Location: Europe
     
Mar 10, 2014 14:34 as a reply to  @ marcwilliams88's post |  #2378

IMAGE: http://farm3.staticflickr.com/2847/13066817574_bf750bf6a6_b.jpg
IMAGE LINK: http://www.flickr.com/​photos/viperr/13066817​574/  (external link)
St Paul's (external link) by The Viperr (external link), on Flickr

Fuji X100S, Canon 550D, Kit, Canon 85 1.8, Sigma 35 1.4 and Samyang 8mm.
Flickr (external link)

  
  LOG IN TO REPLY
bowtie`
Senior Member
488 posts
Gallery: 26 photos
Likes: 69
Joined Nov 2007
Location: Indiana, USA
     
Mar 10, 2014 20:55 as a reply to  @ mhambi's post |  #2379

I remembered back in the mid 1980's getting some welder glass to watch and annular eclipse here. Could not remember where I put that glass though. This weekend was cleaning out a closet and I found it in the back of the closet in an unmarked box. Turns out it is a 9 shade. Tried it on some windmills in the general neighborhood.

5MkIII, 24-70, 9 shade welders glass


HOSTED PHOTO
please log in to view hosted photos in full size.




  
  LOG IN TO REPLY
Ranger ­ Kevin
Member
Avatar
113 posts
Gallery: 11 photos
Likes: 43
Joined Feb 2013
Location: Germany
     
Mar 13, 2014 10:28 as a reply to  @ post 8840380 |  #2380

Hello friends,

finally I get to post in this thread :)
Let me recap the last few days of my Life:
- March 1st: Saw the "10 Photography Life Hack" Video by DigitalrevTV (Link (external link)), which also featured the welding glass trick.
- Searched the Interweb for Tips & tricks, and of course found this thread in my favorite photo forum.
- ordered a shade 9 welding glass off the evil bay for 3.79 € (icluding shipping)
- used the remaining days to read through the whole 159 pages of this thread until the glass finally arrived today.

It is labeled "athermal(R)", which is apparently a trademark for welding glass of an asian manufacturer (dynaflex (external link)).

IMAGE: http://up.picr.de/17638509vj.jpg
It is clearly one of the green tinted ones, as a quick test against the sun prooved.
After rinsing it with some soap water, it was basically good to go, completely clean, I could not see any damages or optical problems. So I quickly set up my Tripod + 50D in the kitchen, rigged up the distagon 2.8/25 and first took a test shot for comparison:
IMAGE: http://up.picr.de/17638510yr.jpg
(Note: all immages are SOOC, F16 and are just "Quick and dirty")
It is a little overexposed, but the light was very harsh, and I did not really care that much.
Then I mounted the glass with the help of a 55mm Cokin adaptor ring and some masking tape and took a 35 sec exposure. I calculated the shutterspeed according to the 9-stop ND-Table in the first post.
IMAGE: http://up.picr.de/17638508iy.jpg
As Ruby Rod would say: "Crystal Green" :cool:
Then I set the custom WB in Camera to that Image and took a second exposure, this time for 42 secons, as I found the first immage a bit too dark.
And lookee there, the colours actually came out all right. With a bit of a tweak in PP this should be no Problem.
IMAGE: http://up.picr.de/17638507nq.jpg
All in all, it is definetly more like a 10-stop than a 9-stop, considering that the first test shot was a little overexposed, whereas the seconnd shot was still a bit dark.
Now I will have to go on the hunt for some interesting subjects. So, see you then ;-)a

Cheers, Kevin ;)
Studio Nightowl Photography on Facebook (external link)
7D II, 6D, 350D (IR-modded 700nm), Zeiss and Canon glas

  
  LOG IN TO REPLY
Ranger ­ Kevin
Member
Avatar
113 posts
Gallery: 11 photos
Likes: 43
Joined Feb 2013
Location: Germany
     
Mar 14, 2014 12:59 as a reply to  @ Ranger Kevin's post |  #2381

Okay, as the sun was still shining, I went out to an old, small dam nearby (probably the closest to a waterfall you can get around here) and did some exposured with the glass.
I used the custom white balance from the shots from yesterday, but I also took a shot with a grey card for PP, and also tried to use the eyedropper WB on the white-grey-ish parts of the waterfall. The latter two methods produced way warmer colours than the custom WB in camera.

All post processing has been done in DPP (WB, saturation, a little sharpening and also brightness / contrast)

IMAGE: http://up.picr.de/17648817ar.jpg

IMAGE: http://up.picr.de/17648818pu.jpg
(That is the very wonky bridge I had to carry my equipment over)

Even though I was in the shade, I dig get some light leakage on some shots.
This one for example I had to torn to B/W, as the top half was really purple. You can still see the hexagonal flare in the immage.

IMAGE: http://up.picr.de/17648816th.jpg

Currently I have mounted the glass on a Cokin lens cover, which then clips onto the cokin adaptor rings (I think it is one of the first methods mentioned in this thread). But honestly, I don't like the method very well, it hat a high potential for light leaks, and mounting it onto the adaptor rings is really difficult, because the cap ist not flexible anymore after beeing superglued to the glass. Also, I get vignetting from the mount when I use the filter on my EF-S 17-55 IS USM, which has a 77mm filter thread.
Therefore, I plan to remove the lens cap mount again, simply glue a 77mm cokin adaptor directly to the glass and then use stepup-rings to mount it on my smaller lenses. That should make it easier to handle and also reduce light leaks signifficantly. Because At the moment, I have to put the filter onto the adaptor ring first and then screw both onto the lens, so it is a screw-on filter either way.

But I am really impressed with the results, definetely the best bang-for-your-buck (and also fun-for-your-buck) ratio you will ever get in digital photography.

Cheers, Kevin ;)
Studio Nightowl Photography on Facebook (external link)
7D II, 6D, 350D (IR-modded 700nm), Zeiss and Canon glas

  
  LOG IN TO REPLY
bowtie`
Senior Member
488 posts
Gallery: 26 photos
Likes: 69
Joined Nov 2007
Location: Indiana, USA
     
Mar 14, 2014 20:50 as a reply to  @ mhambi's post |  #2382

I just hand-hold the welders glass up to the lens. That method is certain to keep the number of good images down to a minimum. But sometimes it can give you a some-what interesting image. I like the arc at the top of the image here but the circles I could do without. So it ends up being another scrub image but it is one with some interesting artifacts.


HOSTED PHOTO
please log in to view hosted photos in full size.




  
  LOG IN TO REPLY
Ranger ­ Kevin
Member
Avatar
113 posts
Gallery: 11 photos
Likes: 43
Joined Feb 2013
Location: Germany
     
Mar 16, 2014 09:09 as a reply to  @ bowtie`'s post |  #2383

Well, I ran into a problem when trying to PP these long-time-exposed images with GIMP.
For seome reason, GIMP fails to load images with an exposure Time of >30s, ist says "loading file" but does not proceed.
Apparently, that is because for some reason the ShutterSpeedValue in the Exifs gets set to 0 when taking pictures in BILB-Mode (don't know if that is a canon problem, but it seems so), which then causes GIMP to bug out when trying to load the image.
So, just in case someone runs into the same problem, here's the solution:
Use an EXIF Editor (like Exiftool) to set the ShutterSpeedValue to something like 1/5, then GIMP will have no problem anymore to load the image :cool:


Cheers, Kevin ;)
Studio Nightowl Photography on Facebook (external link)
7D II, 6D, 350D (IR-modded 700nm), Zeiss and Canon glas

  
  LOG IN TO REPLY
pwm2
"Sorry for being a noob"
Avatar
8,626 posts
Likes: 3
Joined May 2007
Location: Sweden
     
Mar 16, 2014 09:16 |  #2384

Ranger Kevin wrote in post #16762190 (external link)
Well, I ran into a problem when trying to PP these long-time-exposed images with GIMP.
For seome reason, GIMP fails to load images with an exposure Time of >30s, ist says "loading file" but does not proceed.
Apparently, that is because for some reason the ShutterSpeedValue in the Exifs gets set to 0 when taking pictures in BILB-Mode (don't know if that is a canon problem, but it seems so), which then causes GIMP to bug out when trying to load the image.
So, just in case someone runs into the same problem, here's the solution:
Use an EXIF Editor (like Exiftool) to set the ShutterSpeedValue to something like 1/5, then GIMP will have no problem anymore to load the image :cool:

Ouch - sounds like gimp has a division-by-zero bug when trying to convert from a quotient into seconds with decimals.

Try a program that strips the Exif information and see if you can load the image.


5DMk2 + BG-E6 | 40D + BG-E2N | 350D + BG-E3 + RC-1 | Elan 7E | Minolta Dimage 7U | (Gear thread)
10-22 | 16-35/2.8 L II | 20-35 | 24-105 L IS | 28-135 IS | 40/2.8 | 50/1.8 II | 70-200/2.8 L IS | 100/2.8 L IS | 100-400 L IS | Sigma 18-200DC
Speedlite 420EZ | Speedlite 580EX | EF 1.4x II | EF 2x II

  
  LOG IN TO REPLY
Ranger ­ Kevin
Member
Avatar
113 posts
Gallery: 11 photos
Likes: 43
Joined Feb 2013
Location: Germany
     
Mar 16, 2014 10:32 |  #2385

pwm2 wrote in post #16762207 (external link)
Ouch - sounds like gimp has a division-by-zero bug when trying to convert from a quotient into seconds with decimals.

Try a program that strips the Exif information and see if you can load the image.

If you read carefully, you will note that I have allready posted the solution at the end of the paragraph above ;-)a

Exiftool + ExiftoolGUI (external link) works perfect, and if you know it it is not too much of a workaround

I just thought it might fit here, because the welding glass is a cheap way of taking long exposures, so I figured that people that use it might also be more likely to use a cheapo PP software (cheapo in terms of price, not features!), whereas people that have the money for a bigstopper would probably also have the money for a PS-license, which should not have the bug in the first place.


Cheers, Kevin ;)
Studio Nightowl Photography on Facebook (external link)
7D II, 6D, 350D (IR-modded 700nm), Zeiss and Canon glas

  
  LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as a registered member)

740,625 views & 40 likes for this thread
Welding Glass (£1/$1 ND Filter) Exposures
FORUMS Photo Sharing & Visual Enjoyment Still Life, B/W & Experimental 
AAA
x 1600
y 1600

Jump to forum...   •  Rules   •  Index   •  New posts   •  RTAT   •  'Best of'   •  Gallery   •  Gear   •  Reviews   •  Member list   •  Polls   •  Image rules   •  Search   •  Password reset

Not a member yet?
Register to forums
Registered members may log in to forums and access all the features: full search, image upload, follow forums, own gear list and ratings, likes, more forums, private messaging, thread follow, notifications, own gallery, all settings, view hosted photos, own reviews, see more and do more... and all is free. Don't be a stranger - register now and start posting!


COOKIES DISCLAIMER: This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and to our privacy policy.
Privacy policy and cookie usage info.


POWERED BY AMASS forum software 2.1forum software
version 2.1 /
code and design
by Pekka Saarinen ©
for photography-on-the.net

Latest registered member is tnt2112
1094 guests, 300 members online
Simultaneous users record so far is 15144, that happened on Nov 22, 2018

Photography-on-the.net Digital Photography Forums is the website for photographers and all who love great photos, camera and post processing techniques, gear talk, discussion and sharing. Professionals, hobbyists, newbies and those who don't even own a camera -- all are welcome regardless of skill, favourite brand, gear, gender or age. Registering and usage is free.