Long Exposure - DPChallenge Forums

03/08/2006 02:48:19 PM · #1

How do you do a long exposure shot during the day? Is there a filter you use? Please help

03/08/2006 03:08:06 PM · #2

Stacking ND filters. It will create vignetting though.

B+W has ND Filter 110, 113,120 which are used as sun filters, which you can use to take a picture of a really busy street in the day and possibly not have any pictures of the people walking on the street.

03/08/2006 03:10:30 PM · #3

What kind of day long exposure do you plan on taking? A circular polarizer can also be used as a lite nd filter.

03/08/2006 04:12:51 PM · #4

I just was wondering because i see long exposure shots all the time that i know where taken during the day and i just wanted to know how it was done, another question i have is how is multi-exposure shots done? like the sports shots with a baseball player throwing

03/08/2006 04:14:19 PM · #5

one long exposure i plan on doing very soon is of a waterfall to get the milky effect on the waterfall. how long of an exposure do i need and do i need filters?

03/08/2006 04:15:03 PM · #6

One more question ....what is vignetting?

03/08/2006 04:20:27 PM · #7

Originally posted by CHIEFVOLS:

one long exposure i plan on doing very soon is of a waterfall to get the milky effect on the waterfall. how long of an exposure do i need and do i need filters?

Any ND filter can help with this effect. Larger # = longer exposure.

Canon EF 28-135mm f/3.5-5.6 IS USM

03/08/2006 04:21:17 PM · #8

thanks i'll try that soon

Tallbloke

Canon EOS-350D Rebel XT

03/08/2006 04:23:46 PM · #9

Originally posted by CHIEFVOLS:

one long exposure i plan on doing very soon is of a waterfall to get the milky effect on the waterfall. how long of an exposure do i need and do i need filters?

Depends on how fast the water is flowing, but probably not as long as you'd imagine

This, stunningly boring, shot (uploaded hastily for illustration purposes only) is a half second shutter and the water is already looking milky.

Steve

03/08/2006 04:30:54 PM · #10

Originally posted by CHIEFVOLS:

One more question ....what is vignetting?

When the camera takes a picture of the edge of a filter, lens hood, edge.

03/08/2006 04:36:21 PM · #11

2 sec exposure with ND 8 filter and a circular polarizer. If I had a gradual/ graduated nd filter I would've used that instead of a circular polarizer.

Regualer ND filter - even amount of filtering throughout the scene.
Gradual/graduated ND filter - You can rotate the filter to make the brighter park seem darker to get better dynamic range. Great for those sunset shots where you want the ground to be lit unstead of being dark.

03/08/2006 05:11:21 PM · #12

did you use a filter?

Originally posted by Tallbloke:

Originally posted by CHIEFVOLS:
one long exposure i plan on doing very soon is of a waterfall to get the milky effect on the waterfall. how long of an exposure do i need and do i need filters?

Depends on how fast the water is flowing, but probably not as long as you'd imagine

This, stunningly boring, shot (uploaded hastily for illustration purposes only) is a half second shutter and the water is already looking milky.

Steve

03/08/2006 05:15:15 PM · #13

you said B+W has ND Filter 110, 113,120 which are used as sun filters, but on this one you used a ND 8 filter what is the difference in the ones you talked about first and the one you used in this photo, and you said the higher the number the longer the exposure so the 110, 113, and 120 would be used only for long exposure or could they have been used for this photo too.

thanks again and sorry about all the questions

Originally posted by faidoi:

Canon EF 24-70mm f/2.8L USM

03/08/2006 05:27:27 PM · #14

Originally posted by CHIEFVOLS:

I just assume your question about daylight long exposure was for street photography in which you would need something extreme. I made the second post in case it wasn't.

I think most people use a ND filter rated less then the one I used for the waterfall shot. The ND 8 blocks out about 3stops of light. It was a good deal so I picked it up.

goinskiing

Canon EOS-6D

03/08/2006 05:27:58 PM · #15

Assuming you wanted a larger DOF, I would think that you could decrease the aperature size to increase the shutter time. I think that'd be able to get you the same desired effect for the exposure you're looking for.

Canon EF 24-70mm f/2.8L USM

03/08/2006 05:29:58 PM · #16

Originally posted by goinskiing:

Exactly. This method and the filter will help your water from being blown out. What makes some of these shots work is having a sharp area for the wispy water to flow around.

Message edited by author 2006-03-08 17:31:42.

goinskiing

Canon EOS-6D

03/08/2006 05:38:24 PM · #17

Originally posted by faidoi:

Originally posted by CHIEFVOLS:
One more question ....what is vignetting?

When the camera takes a picture of the edge of a filter, lens hood, edge.

I thought vignetting was light fall-off at the corners (look at the bottom of this pic. and see how the corners are darker):