March 06, 2015, 12:48:18 PM

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Topics - orioncroft

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Hello Everyone,

After many months frequenting this website, I decided to post.

I have been experimenting with slow shutter as of late and have two questions about ND Filters.

QUESTION 1: I am getting a weird effect with my ND Filter. Why? Examples below.

Here's what is used in these example photos: Canon 5D MKII, 24-70 F2.8L, Hoya Variable ND Filter,  Remote Controller.

First (Good) Photo Settings: 50mm, ISO160, F18, 0.5 Sec Shutter
Second (Bad) Photo Settings: 50mm, ISO160, F18, 30.0 Sec Shutter

It's obvious that it's something to do with the shutter speed ...but isn't that the point of an ND Filter? I want to take long exposures ...but every time I do, I get this weird blue smudge.

QUESTION 2: How do you expose properly with an ND Filter? The exposure meter does not get effected when I place an ND filter on ...So how do I compensate exposure accurately when I put the filter on?

Pages: [1]