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DPChallenge Forums >> Tips, Tricks, and Q&A >> Multiple exposure!
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10/22/2004 11:49:11 PM · #1
please help me with this mutiple exposure thinbg! i think i have an ideia of what it is but i don't want to have just an ideia.. i would like to know what it is and if the canon eos 20d does it! please help. thanks in advance
10/22/2004 11:52:46 PM · #2
Multiple exposure is when you take 2 or more shots that are overlayed in one image. Most digital cameras cannot do this. I believe the Fuji S602 is the only one that can.

With film you take 2 or more shots without advancing so all the shots taken appear in the same frame.
10/23/2004 12:21:42 AM · #3
But you don't necessarily need to do it in camera. You can also shoot several shots separately, and combine them later in an image editor.
In photoshop it is achieved by combining layers in mode 'screen'.

The rule of thumb is that all shots need to be underexposed. How much - depends on the number of the shots you are going to be combining.

Here is a couple of examples of end result:


For 9 or so shots i usually do EV -4.0, but then, i normally shoot with EV -.7 or -.3. But here is a link that explains it in a little more detail, including how to pick values:
//www.naturephotographers.net/articles0903/tg0903-1.html

And if you like something like the above images, i would highly recommend "Photo impressionism and subjective image", by Freeman Patterson:
//www.amazon.com/exec/obidos/tg/detail/-/1552633276

I would really like to see the results if you decide to try this, i love this stuff.
10/23/2004 12:22:39 AM · #4
The Fuji S7000 does it as well. I took this one pulling the zoom back for each shot and increased the shutter speed as well.


JPR did a multi exposure, A GREAT one, in the the Complexity challenge:

You may want to get some insight into the procedure from him.
10/23/2004 12:25:53 AM · #5
The 20D can't do true multiple exposures. However you can combine two or more images (from any camera) in editing software. Or you can do very long exposures in a completely dark environment and use a light source repeatedly for short durations to approximate the same result.
10/23/2004 12:26:19 AM · #6
Something I wrote based on the Freeman Patterson book, though its probably worth pointing out that Andre Gallant, the co-author, does more of the multi-exposure work, particularly his book 'dreamscapes'

10/23/2004 12:27:22 AM · #7
banmorn, both of those are very nice. It would be cool on the first one with flowers to try to not only zoom out, but also throw the frames with the buggest images out of focus a little, to achieve the blurry/dreamy effect.
10/23/2004 12:27:30 AM · #8
Originally posted by coolhar:

The 20D can't do true multiple exposures. However you can combine two or more images (from any camera) in editing software. Or you can do very long exposures in a completely dark environment and use a light source repeatedly for short durations to approximate the same result.


Like this...


10/23/2004 12:28:45 AM · #9
Originally posted by Gordon:

though its probably worth pointing out that Andre Gallant, the co-author, does more of the multi-exposure work, particularly his book 'dreamscapes'


Yes, you are right of course. But i can't really say whose photos and chapters in that book i like more. They both are very cool.
10/23/2004 12:30:33 AM · #10
Originally posted by yurasocolov:

Originally posted by Gordon:

though its probably worth pointing out that Andre Gallant, the co-author, does more of the multi-exposure work, particularly his book 'dreamscapes'


Yes, you are right of course. But i can't really say whose photos and chapters in that book i like more. They both are very cool.


Yup - I really got a lot from many of Freeman Patterson's books. One of the very few photographer/ authors who manages to talk about the important, difficult things and mostly ignores the formulaic technical aspects that are over developed in every other book. His writing probably opened my eyes the most out of anything I've read.

Message edited by author 2004-10-23 00:30:39.
10/23/2004 12:33:31 AM · #11
Btw, in addition to multiple exposure, slide overlays or an equivalent photoshop 'overlay' mode is very cool too:



I believe this is what Freeman Patterson does more than Andre Gallant =) But it's been a while, so i could be wrong. =) I know this is how the cover image on that book was created.
10/23/2004 12:36:44 AM · #12
Thanks everyone!! i see what i can do you! when i have the time for shore im going to try it out! thanks for the tips too!thats all dpchallenge is all about! :) learning! now lets see what i've learn! :) thanks again everyone!
10/23/2004 12:37:23 AM · #13
Originally posted by Gordon:

Yup - I really got a lot from many of Freeman Patterson's books. One of the very few photographer/ authors who manages to talk about the important, difficult things and mostly ignores the formulaic technical aspects that are over developed in every other book. His writing probably opened my eyes the most out of anything I've read.


Absolutely, him and John Shaw. His 'landscape photography', for instance, is a must to read for everyone doing that, imo (ISBN 081743710X).
10/23/2004 12:37:50 AM · #14
Originally posted by yurasocolov:

Btw, in addition to multiple exposure, slide overlays or an equivalent photoshop 'overlay' mode is very cool too:



I believe this is what Freeman Patterson does more than Andre Gallant =) But it's been a while, so i could be wrong. =) I know this is how the cover image on that book was created.


Andre Gallant recently did a workshop in Ottawa promoting his book 'Dreamscapes' where he uses this type of image exclusively.
10/23/2004 12:40:31 AM · #15
Originally posted by yurasocolov:

Originally posted by Gordon:

Yup - I really got a lot from many of Freeman Patterson's books. One of the very few photographer/ authors who manages to talk about the important, difficult things and mostly ignores the formulaic technical aspects that are over developed in every other book. His writing probably opened my eyes the most out of anything I've read.


Absolutely, him and John Shaw. His 'landscape photography', for instance, is a must to read for everyone doing that, imo (ISBN 081743710X).


True, Shaw's Nature Photography Field Guide has one of the best explainations of exposure and metering that I've read. He does tend to be more generally technical than Patterson though. I liked Freeman's considerations of how to see and the impact of what you shoot, rather than wasting much of his books talking about shutter speed and f-stops.
10/23/2004 12:44:32 AM · #16
Originally posted by cpanaioti:

Andre Gallant recently did a workshop in Ottawa promoting his book 'Dreamscapes' where he uses this type of image exclusively.


You mean overlays as opposed to multiple exposure? Or impressionistic/subjective stuff in general?

I was seriously considering going this year to one of their seminars in New Brunswik, but they say a film camera is required. :( Although i think it's not =)
10/23/2004 01:51:14 AM · #17
Here is a double exposure. Easiest with digital cameras is to use black background and leave the shutter open long enough. Best to work in darkness with a red nightlite. If you use strobe, you leave the shutter open or select a time like 6-8 seconds and fire the strobe manually. You can do the same out of the darkness but you will have to cover the lens in between and use subdued lighting. Take a look at split boxer for another example.

Message edited by author 2004-10-23 01:51:58.
10/23/2004 08:29:32 AM · #18
Originally posted by yurasocolov:

Originally posted by cpanaioti:

Andre Gallant recently did a workshop in Ottawa promoting his book 'Dreamscapes' where he uses this type of image exclusively.


You mean overlays as opposed to multiple exposure? Or impressionistic/subjective stuff in general?

I was seriously considering going this year to one of their seminars in New Brunswik, but they say a film camera is required. :( Although i think it's not =)


He was presenting his slide montages. (overlays)
10/23/2004 09:51:07 AM · #19
One of the classic ways to learn about multiple exposure with a film camera is to simply run a roll of film through the camera twice, underexposing by a stop or so each time. You can try to register the frames in each successive run by indexing the same sprocket hole to the gear on the windup mechanism or just choose to let the frames fall where they may.
10/24/2004 11:13:43 PM · #20
I'm still around this multiple exposure thing can get a hang of it! i can't blend the two fotos together! :(
i can only blend them particialy can't make it seem to go together! heres my attempt!

10/25/2004 12:45:59 AM · #21
bump
10/25/2004 01:09:54 AM · #22


Discraft, I use Digital Image Pro so I haven't tried the blending thing...I use layers to merge two or more pics. Use tripod and remote...take the picks of your subject throughout the scene. Use the pic with the subject furthest away (your guy standing) as your background layer. Mask somewhat close to your subject for each of the layers stacking the nearest on top of the next closer. Pay attention to shadows that your subject casts in each of the layers. Flatten the stack and blend (if you need to).

If nothing but your subject moves you can be pretty loose with your mask as nothing else changes and should line up (watch shadows and lighting changes).

I did the above in about 15 minutes (after taking the four pics of course).

Now that I look at this again I can see I goofed where I am seated at the right, I forgot to cut out that area right behind where I am seated, should be able to see pant leg from the standing subject in that little area.

Andy
10/25/2004 01:41:02 AM · #23
As Andy indicates, the thing that is missing from your attempt is masking. You basically need to mask out (or just erase, if you like) everything but yourself in each additional layer that you add on top of the original layer. That way, you can show up at 100% opacity on each layer, giving the illusion of multiple versions of you throughout the image.
10/25/2004 02:06:42 AM · #24
the selection wasn't all correct but i think i finally got the ideia!!


thanks a lot veryone who tried to help! thanks for your time!
10/25/2004 02:09:39 AM · #25
Yay, you did it! Congrats. :-)
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