Focus Lock

I might just get some of that to play with.

There's a range of different shades of welding glass, from the very light that's used by people who are working close to gas ( oxy-acetylene) welders right through to very dark used by the welder when arc or MIG welding.

The gas welding goggles lens comes in 50mm dia sizes as well.

http://www.severosklo.cz/svar_eng.html

http://www.thewelderswarehouse.com/Welding/Filter_Lenses__Glass_.html

This is an interesting site.

http://www.mreclipse.com/Special/filters.html

They're cheap enough to experiment with as well.

[IMG]http://i74.photobucket.com/albums/i262/mudplugga/album%202/IMG_4182.jpg[/IMG]

Whaddayouknow, the welding glass fits Cokin P Series holders perfectly.

Now all I need to do is try it on a very bright sunny day with a very long exposure.

Wow - won't flare be an issue?

Only at high amps!

I've got the hood for the Cokin set which I left off for the picture.

It's grey and miserable today so it's not looking good for testing.