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Blurring effect with F-stops and slow shutter???
I am looking to take some pictures of NYC from Jersey with the Hudson in the foreground.....

Question is: I am looking to use the blurring effect I have seen many times on waterfall, beach pics etc....where the water turns into foamy fog....

Do I accomplish this effect with a small F-stop and a slow shutter?? Thanks in advance as always..

Comments (5)

Yes. The blurring of moving water is done with slow shutter speeds. A corresponding small aperture is, of course necessary. If you are planning to shoot in daylight, it may be difficult to get the aperture small enough without risking image quality due to diffraction. A neutral density filter may be necessary in such circumstances..

You can also consider late evening attempts after the sun has set, but before it is actually "dark"..

Nothing is enough for the man to whom nothing is enough...

Comment #1

Yes, you will probably need a 2x or 4x neutral density filter depending on the amount of 'flow' you wish to capture...

Comment #2

One can also use one or even two polarizers to darken the image to allow for slower shutter speeds, as wellTelecorder (Dave)FZee30+RD-S+OlyTC1.7XDee50+Nikon 35mm F2.0D-AF+Nikkor18-70DX+Tam70-300-macro-LD+BIGMA 50-500 EX HSM(Coming soon - Nikon 70-300 VR!)My Image Galleries.

Http://www.nikonians-images.com/...hp?cat=500&ppuser=121399&password=.

Http://Telecorder.smugmug.com/.

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Comment #3

Also be careful to use a good tripod, depending on the camera, you have mirror lockup or delayed shutter release after mirror, or even just using a remote shutter release...

Comment #4

Howard Moftich wrote:.

Yes, you will probably need a 2x or 4x neutral density filterdepending on the amount of 'flow' you wish to capture..

I'd recommend 8X. 2X doesn't do much at all. For this shot in full sun, I got a 3 sec exposure from using a polariser (which also cuts ight) on stacked 4x and 8X ND filters (I think), even though I was stopped down to f/22. I could hardly see anything through the viewfinder! LOL FOr smooth water effects, you want really long exposures. Lower light is better, but if your scene is brighter, then you're out of luck if yoiu can't cut enough light..

Canon EOS 5D3s f/22.0 at 17.0mm iso100.

Note that it was with a FF body, so f/22 isn't as damaging in terms of diffraction as it would be on a cropped body..

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The stacked filters with a WA lens meant some pretty obvious vignetting, so I increased it more in PS to make it look like I meant to do that..

3 secs isn't very long for smooth water effects across the bay. You'd probably want to go MUCH longer..

Cheers from John from Adelaide, South AustraliaJohn Harvey Photography http://johnharvey.com.auCanon 40D, Canon 20D & Fuji F10..

Comment #5

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This question was taken from a support group/message board and re-posted here so others can learn from it.

 

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