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?