Need help: getting started with landscape and waterfalls photography

[Methodical]

I am finding myself more and more interested in photographing landscapes and waterfalls. Currently, I am a bird photographer. I've read thru some threads regarding ND filters, GND filters etc. So I decided that these are some tools needed to enhance the photos. I am about to place an order for some of these filters from B&H but wanted to get some advice before doing so. I am open to all suggestions, help and tips.

Waterfalls: I want to make the cottony waterfalls so I know I need some ND filters to slow the shutter, especially in bright daylight.

1. What stop should I get; 2, 3, 4, 8 or all?

Landscape: I understand that GNDs are needed to get better exposure for a scene with bright skies and a darker foreground.

2. What is a good set of GNDs for a beginner such as myself?


Below is a couple photos I got at Niagara Falls using a Circular Polarizer. I want to improve on these. So Any help would be greatly appreciated (i.e. readings etc)

Thanks

Al


http://methodical.zenfolio.com/img/v3/p978472036-4.jpg

http://methodical.zenfolio.com/img/v1/p896531524-4.jpg

[argyle]

1.) If you have a decent polarizer, I wouldn't recommend a 2-stop ND filter...the polarizer could accomplish this in addition to the polarizing effect. Its always difficult to recommend a certain strength ND since the lighting conditions will vary so much. I carry along a 3- and 6-stop, so I could stack if necessary and/or combine with the polarizer. To get the silky water effect, you'll need to get your shutter speed down to at least 0.5 seconds and longer. Too slow, and the water will become blown out and not look very good, IMO. The filter strength will depend not just on lighting, but also on your combination of f-stop, ISO and shutter speed.

2.) A good GND starter kit would consist of a 2-stop soft and 3-stop hard. The top three, in order of expensive to least expensive, are: Singh-Ray, Lee, and Hitech. They are all made from optical polyester resin, so not much difference there. S-R and Lee filters are 4x6, and the Hitechs are 4x5. Personally, I'd go with the Hitechs...very good alternative to the more expensive brands, and even though they're an inch shorter, I've never had any issues when using them on my 5D/5D2 with an ultrawide lens...they provide coverage across the entire frame just fine. I've been using the Hitechs for years, and just don't see a need to "upgrade" unless I need a specialty filter such as a reverse GND, made only by S-R.

You have the option to handhold the GND filters in front of your lens, or use a filter holder that threads onto your lens via an adapter ring. If you decide to forego handholding and use a holder, I'd go with the Lee foundation kit and the wide angle adapter ring.

3.) Invest in a cheap hotshoe bubble level...it'll help with your horizon lines.

[Methodical]

Thanks Argyle. I will investigate your recommendations.

Again thanks