Beginners question on aperture

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fagopher

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Hi All

I was playing with manual mode in my Nikon D5000 at the beach trying to get a picture of the see waves using long exposure

So long exposure allows to capture the image blurred (as waves move). Question is how should be aperture? Low/high. Since low aperture is to make shallow deep of field (part of picture is blurry) whats is the effect of using low vs high aperture in long exposure pictures?

Thanks in advance!!!
 
The blurry water effect comes from a long shutter speed. you will need a ND filter so opening the shutter for a longer peiod of time doesnt blow out the image.
your DOF depends on how close you are, what focal length you are shooting as well as aperture.
Set it to about f8 - f11
get a 10stop ND filter and attach
set your shutter speed appropriately (2-30 secs) and shoot away. Altering the size of the aperture and the shutter speed will alter the exposure, learn about the exposure triangle to understand this.

there are many article on tinterweb of achieving this effect with more detailed instructions
 
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Yes, I was using ND8+GND8 as it was very bright. I set the times between 10 and 30 and got good images but did not see much differences with aperture changes (except more bright)

Am I right to say that there should not be differences in the image (except light amount) when chamging appertur and that it makes sense to use only large aperture mumbers? When should I want to use low numbers? Only when dark?

Thanks
 
as previosu post google the exposure triangle to understand how DOF changes
 
Just used this in the "How to use manual post" thought it would be handy here too , though not really aimed at Landscape work

Apature id say from f16 to 18 / Depends what type of motion you want 4 to 6 seconds will capture the tide very well but wont be milky. Anything from 20-30 secs would achieve this.

Here are some videos via Adorama:

http://www.youtube.com/watch?v=VlSuInza16E || Shooting in Manual Mode

http://www.youtube.com/watch?v=Axt9zLxdE8s || Metering Modes

http://www.youtube.com/watch?v=KQw28-3LEU4 || Exposure

http://www.youtube.com/watch?v=bv0vXD16_lA || Understanding Stops

http://www.youtube.com/watch?v=UrsF0Xba2KY || Metering and Exposure Compensation
 
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Hi,

If you have ND filters, I'd use the best aperture for quality for your lens, prob about f8, f11 ?? I'm assuming depth of field isn't a problem? Then stick to a low ISO and control exposure using the shutter speed.

Cheers,

Kenny
 
Mp4 said:
Just used this in the "How to use manual post" thought it would be handy here too , though not really aimed at Landscape work

Apature id say from f16 to 18 / Depends what type of motion you want 4 to 6 seconds will capture the tide very well but wont be milky. Anything from 20-30 secs would achieve this.

Here are some videos via Adorama:

http://www.youtube.com/watch?v=VlSuInza16E || Shooting in Manual Mode

http://www.youtube.com/watch?v=Axt9zLxdE8s || Metering Modes

http://www.youtube.com/watch?v=KQw28-3LEU4 || Exposure

http://www.youtube.com/watch?v=bv0vXD16_lA || Understanding Stops

http://www.youtube.com/watch?v=UrsF0Xba2KY || Metering and Exposure Compensation
Click to expand...

very cool, ty
 
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