How to use a welding glass as a big stopper

[Simon]

What do you guys think of this?
This is the how to link
http://www.bruinphotography.com/2012/01/22/how-to-use-welding-glass-as-a-budget-big-stopper/

Various shots of the welding big stopper
http://www.behance.net/hafizulmahput/frame/1347365


Welding glass £1.43
http://www.ebay.co.uk/itm/Parweld-Welding-Lens-Lense-Glass-Helmet-Filter-Shade-10-/280878972211?pt=LH_DefaultDomain_3&hash=item4165b0fd33

Adapter ring 67mm £1.72
http://www.ebay.co.uk/itm/67mm-Metal-Ring-Adapter-for-Cokin-P-Series-Filter-Holder-/170860717388?pt=UK_Photography_Adapter_Rings&hash=item27c817a54c


B+W filter110 10 stop £80
http://www.amazon.co.uk/Multi-Coated-Neutral-Density-Filter/dp/B004861KHO/ref=sr_1_2?s=electronics&ie=UTF8&qid=1344424000&sr=1-2

[Mike]

Well, why not? Seems like a neat idea to me. Could have a lot of fun with that green color cast.

[Chris Perley]

I used a piece of welder's glass to photograph the transit of Venus a few months back. I'll have to give this technique a try!

[Simon]

These are the problems with it
1 The glass isn’t coated so is quite prone to flare
2 The glass shows up smudges and fingerprints really strongly
3 The edges can be quite sharp.


@mikehamm @pschtyckque Thanks guys : )

[Mike]

@simon0128 - That's ok. Use those "flaws" to your advantage. I'm not saying it's a direct replacement for a proper ND filter, but it seems to have its place. The example in the article seems a good example.

[Jordan Anderson (icywarm)]

I wonder is with a second braketed shoot without the filter if you could mask in a red and blue channel... Maybe soften those channels to just bleed in a color with no real edges... I think i have a sunday project!

[Jordan Anderson (icywarm)]

Wow i cannot spell when posting from my phone.