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Long exposure in daylight?
Hi..

Does anyone know of any solutions to overexposure when using a slow shutter speed in daylight? I generally cannot use a shutter speed faster than around a quarter of a second without the whole image being washed out by light, even when using my circular polariser. Is there another kind of filter I can use to control the amount of light entering the lens without sacrificing too much detail?.

- Dylan.

Http://www.flickr.com/photos/wirclickwir..

Comments (9)

You can purchase Neutral Density filters. You can stack multiple together, or in combination with Circular polarizing filter..

They could be marked as .6 or .9 or 2X or 4X or 8Xwhere .9 and 8X are most dark.

Buy filters by good makers like Tiffen, Hoya, Singh-Ray.

Http://www.stan-pustylnik.smugmug.com..

Comment #1

Hi,.

Try to use ND filters..

Of course wiki tells you what this is and how to handle these.

Http://en.wikipedia.org/wiki/Neutral_density_filter.

Regards..

Comment #2

An alternative, if you are not shooting wide-angle, is to stack a linear (not circular) polarizer on top of your current polarizer; then you can vary the effective density from near-zero to near-complete by rotating the outer polarizer...

Comment #3

Use a ND filter. they are available to 20stops at b&h...

Comment #4

The other posters are correct. ND filters are what you need. I've been playing with this for the last couple of weeks and on a cloudy day around 2pm I can get 1.5 minute shutter speed, shooting at the water which is quite reflective..

I'm stacking 2 ND8, 1 ND6 and 1ND2.

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And when I stop being lazy, I'll actually put them onto my main website gallery and not have 3 seperate galleries. ..

Comment #5

Thanks for the advice, everyone. I've been reading up on ND filters, and I think I'm going to get a Tiffen off Amazon ([url=http://www.amazon.com/...58mm-Neutral-Density-Filter/dp/B00004ZCDI]link[/url]). I'll probably just get either a 0.6 or 0.9 strength filter and experiment with that to start off with...I'm leaning more toward the 0.9 for now because I'd like to be able to use longer exposures. How big a difference do the different strengths make?.

- Dylan.

Http://www.flickr.com/photos/wirclickwir..

Comment #6

Wirclickwir wrote:.

I'm leaning more toward the 0.9 for now because I'd like to be able to use longerexposures. How big a difference do the different strengths make?.

A Tiffen 0.9 will take away 3 stops of light..

This means that you will be able to use an exposure time 3 times longers than with no filters. Of course depending on the lens you use, you may very well loose your AF ability (Just not enough light reaches the AF sensors, but you can at least correctly meter).Warm regards,DOF..

Comment #7

Not exactly.. 3 Stops of light = 8x longer exposure. Ie. 1 second without ND, would become 8 seconds with a .9 ND filter..

The OPs original 1/4 second exposure would become a 2 second exposure..

Dad_of_four wrote:.

Wirclickwir wrote:.

I'm leaning more toward the 0.9 for now because I'd like to be able to use longerexposures. How big a difference do the different strengths make?.

A Tiffen 0.9 will take away 3 stops of light.This means that you will be able to use an exposure time 3 timeslongers than with no filters. Of course depending on the lens youuse, you may very well loose your AF ability (Just not enough lightreaches the AF sensors, but you can at least correctly meter).Warm regards,DOF..

Comment #8

Oops, when I wrote 3 times longer, I meant 3 stops.

PicOne wrote:.

Not exactly.. 3 Stops of light = 8x longer exposure. Ie. 1 secondwithout ND, would become 8 seconds with a .9 ND filter..

The OPs original 1/4 second exposure would become a 2 second exposure..

Dad_of_four wrote:.

Wirclickwir wrote:.

I'm leaning more toward the 0.9 for now because I'd like to be able to use longerexposures. How big a difference do the different strengths make?.

A Tiffen 0.9 will take away 3 stops of light.This means that you will be able to use an exposure time 3 timeslongers than with no filters. Of course depending on the lens youuse, you may very well loose your AF ability (Just not enough lightreaches the AF sensors, but you can at least correctly meter).Warm regards,DOF.

Warm regards,DOF..

Comment #9

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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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