about filters specially nd

hi everybody

im small photographers but with you helps and Comforting
i well be better

today im go to ask you about the filters

i need very very dark filter to do the slow shutter in a high light

i search in the internet and i see the nd8-0.9

but i want to buy darker than these filter


now my cousin in USA and i want to tell him get one

i want to know what the best filter to me


4 ex i want to use these filter when rain was fall and get slow shutter

thank you ^^

I would suggest you should do a varable neutral density filter which will go from 2-8 stops. You can purchase a commerical one made by SingRay (or other vendors?) for around $300 (depending on size needed).

Another choice...make your own.

Anyone who shoots outside should want to have a circular polarizer (CPL). The CPL is a two stage device. the out layer (that rotates) is a polarizer. The inner stage (closest to the lens) scatters the incoming light so that the camera body metering and focusing systems will work properly. In my opinion the best CPL is B&W Kaesmann type. Depending on size it will cost around $130.

So you now have a good CPL. To make a VND you simply purchase a good linear (it does not have have the second stage that scatters light) polarizer to put in front of the CPL. As you rotate the outter linear polarizer (and keep the CPL from rotating), the two polarizers will go from being parallel (around 2 stops of light removed) to being perpendicular (right angle) to each other (around 8 stops of light removed).

So if you carry a good CPL you are prepared to drop 2 stops of light and remove glare from water, glass, leaves...etc. By also carrying a linear polarizer you can us it and the CPL to create a varible neutral density filter as needed. This is a low cost and easy to carry solution.

This might be the least expensive solution...

I have not personally tried this solution that MCasan relates above but, it should be feasible and it is certainly inexpensive if you already have a circular polarizer. Here is a link to an explanation of how to do it.

http://digital-photography-school.com …le-neutral-density-filter

Take a look at either a Hoya 9-stop or B+W 10-stop ND filter...these will be your best bet for using in bright sunlight. You can even stack it with a CPL to get even more light reduction (up to 12-stops if using the B+W filter), or a second ND filter. Do yourself a favor:

1.) Stay away from homemade, DIY variable ND filters. The IQ is generally terrible...not worth the time or effort. I have yet to see any image taken with one of these that would make me say 'Wow".

2.) Don't use a piece of welding glass...poor IQ, bad color-cast, with same result as above.

3.) Use only quality ND filters. When you get into long exposures, the camera's internal AA filter tends to allow some IR light to reach the sensor, causing a magenta color-cast to the image. The severity of the color-cast, at least in my opinion, seems proportional to the quality of the filter.

Even a quality variable ND filter such as the Singh-Ray is not strong enough to do what you're describing...just not enough stops for bright sunlight use. Variable ND filters also have some focal length limitations...at very wide focal lengths and max density, you'll get a lot of unevenness in the image due to how the filter halves interact with one another. Personally, I do use the Singh-Ray Vari-N-Duo, which is a variable ND combined with an integral polarizer. I also have several B+W ND filters, namely the 3, 6, and 10-stop varieties. Different situations call for different filter strengths...

thank you very much

friends ? do you can but the name of filters to tell my cousin ^^ ? thank you

Hoya 9-stop ND (neutral density)