Louisbourg ND110

[corporallouis]

Just found this forum through another. Not many Canadian ones here at all. My first contribution to the forums is a shot I took of the Louisbourg lighthouse shoreline with a new B+W filter. It's a 10 stop filter that allows me long exposures in bright daylight as I'm sure most of you know already.

[Greg_Nuspel]

Very nice shot, the treatment is well done.

[kat]

Very nice shot, the treatment is well done.

welcome!

[tomorrowstreasures]

Just found this forum through another. Not many Canadian ones here at all. My first contribution to the forums is a shot I took of the Louisbourg lighthouse shoreline with a new B+W filter. It's a 10 stop filter that allows me long exposures in bright daylight as I'm sure most of you know already.

Is the filter a polarizer filter or a neutral density filter? what is the name of the filter? i love the effects of it! Lovely image!

[corporallouis]

Hi. It's a B+W ND3.0 filter. It's a neutral Density filter that allows you to slow down your shutter speed by 10 stops. It's a little tedious photographing with it. You have to focus and meter without the filter on. Then switch to manual focus or lock your focus, attach the filter and then do the long exposure required usually with bulb setting. There are charts out there or there's the math work to calculate your exposures properly. Most will set the ISO to 100 and stop down to f/14 or so and use a chart to give exposure times. An example is with your ISO and f-stop selected (and your metering done) would be if you had an exposure of 1/125 sec ( using ISO 100 and f/14 ) calculate 1/125 X 1000 (10 stops) = 1000 over 125 and then divide = 8 seconds . . your exposure. Simple eh . . . Hope this made sense. Here's a link to a very good reputable supplier I buy all my filters from: http://www.2filter.com/prices/products/bwnd.html

[kat]

I didn't know there was a chart!!! Trying to find it online now..and more to that! I purchased one last month and this info would be handy!!!!

But I'm a bit of a blonde when it comes to info..

[corporallouis]

Kat . . print this off or write it down and stuff it with your filter.

1/8000 = 1/8
1/4000 = 1/4
1/1000 = 1/2
1/500 = 2
1/250 = 4 .
1/125 = 8
1/60 = 16
1/30 = 30
1/15 = 60
1/8 = 120
1/4 = 240
1/2 = 480
1 = 960
2= 1920
4 = 384

First column is your meter reading using NO FILTER. The second column is the adjusted exposure you need to use.

[kat]

Ok. Just doing some research and boy am I off. I havet he hoya ND4 filter that does 2 stops (although for soem reason I thought it did 4).

So in that equation..would I use 200 instead of 1000?

[tomorrowstreasures]

corporallouis

7 posts in and you have taught some of us some neat information already!!!!

thank you so much for taking the time to do that!
Susan

[corporallouis]

Thank you, but that was nothing at all. I've been at this photography stuff since 1967 and have made more mistakes over the years. But the big thing is that I learned from them. And I have found that the more I learn the less I know. There are some brilliant folks on these forums and most are only too willing to share what knowledge they've gained over the years. I'm only new here and haven't had too much time to get a "feel" for the forum yet. I hope I can help people in any which way I can. I also hope I can learn from some here. I've seen some terrific work being produced during a quick tour of the site. I have a Flickr site I throw all my junk in so that family and friends can see what's going on in my world. I'm not sure if it's okay to post links like that in here, so I'll refrain from that and enjoy the rest of the show you good folks are putting on . . .