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View Full Version : Any Trick To Do Double Exposures On 30D?


nitekatt2006
5th of January 2007 (Fri), 19:35
Since film cameras can pull off double exposures, which of course are sometimes pleasant accidents, I'm curious if anyone knows of a trick or workaround to pull off one with the 30D

Any ideas? katt

stupot
5th of January 2007 (Fri), 19:39
nope. you have to fiddle around in photoshop to acheive that, kinda takes the fun out of it doesnt it;)

Mark_Cohran
5th of January 2007 (Fri), 19:53
It would be a real trick if you could do it as the camera doesn't support multiple exposures - i.e. you can't open the shutter twice to superimpose one image on top of another. The sensor reads out its data and resets after every shot.

Mark

nitekatt2006
5th of January 2007 (Fri), 19:53
Hi, just a few minutes ago, i happened to go to the NAPP site and downloaded the Photoshop User pdf and there is in fact a tutorial to create double exposures in PS CS2. They created a Nikon type ad. too bad though we can't manually pull it off live in the 30D and I would assume that this can't be done in any digi cam, is that right? katt

stupot
5th of January 2007 (Fri), 19:55
correct:)

the only other way to do it would be to fire off a long exposure in a dark room, then manually trip an external flash when you want to take an exposure. not quite the same though is it.

Mark_Cohran
5th of January 2007 (Fri), 20:04
correct:)

the only other way to do it would be to fire off a long exposure in a dark room, then manually trip an external flash when you want to take an exposure. not quite the same though is it.

And with long exposures like Stu described, you increase noise and the potential for hot pixels.

Mark

JMHPhotography
5th of January 2007 (Fri), 20:16
Hi, just a few minutes ago, i happened to go to the NAPP site and downloaded the Photoshop User pdf and there is in fact a tutorial to create double exposures in PS CS2. They created a Nikon type ad. too bad though we can't manually pull it off live in the 30D and I would assume that this can't be done in any digi cam, is that right? katt

You are correct... but then I think that doing it digitally produces a much better double exposure look. You can duplicate the film look if you like as well, but blech... why?

Jonathan Consiglio
5th of January 2007 (Fri), 21:36
You can do it with the Nikon D200.. I'm not sure about there other models though.. I guess Canon thought it would be a waste to add it to the camera's software..

And yes, I have see this done with the Nikon and it's not just something I heard!

Jonathan Consiglio
5th of January 2007 (Fri), 21:42
I just looked in a pdf brochure of the D200 and you can do multiple exposure with up to 10 images.. You just pick the frames you want to merge.. Same idea as film really, you just back it up to expose on the previous image.. Then, there's also something where you merge two images and adjust the opacity..

Still not enough for me t switch over, though!

Mark_Cohran
5th of January 2007 (Fri), 22:30
I just looked in a pdf brochure of the D200 and you can do multiple exposure with up to 10 images.. You just pick the frames you want to merge.. Same idea as film really, you just back it up to expose on the previous image.. Then, there's also something where you merge two images and adjust the opacity..

Still not enough for me t switch over, though!

It seems like you would have more precise control (and it would be easier) in Photoshop. With film we did it because back then there was hardly any other way. Most people didn't digitize their images and only graphic designers had Photoshop. With a DSLR you're going to bring the image into a computer anyway, so why not do the image combination in an image editor anyway?

Mark

slyone
5th of January 2007 (Fri), 23:27
This sounds really cool to experiment with:D could it be done with PS Elements 5? If so...anybody have any useful links? I'm not to good with all that stuff but I did make/design some pretty cool looking cd labels for our girls soccer team photos I gave everyone. I started using layers with different opacities as previously mentioned above. I actually was quite impressed with the final version as everyone else was. Really lookin' forward to this years shots with the new gear I'll have!:D Thanks to all your generous sharing of knowledge! Yea Baby!!God Bless America!;)

Glenn NK
6th of January 2007 (Sat), 02:56
I would agree that doing it in PS would give one far more control.

The camera will make some standard decisions for each frame that will not likely be the ones you want.

As "slyone" noted, opacities are one variable, but even me (barely a beginner) can see the possibilities with saturation, balance, contract, etc. in PS.

The camera simply cannot do that, and it never will (unless it comes equipped with PS).;)

SkipD
6th of January 2007 (Sat), 06:04
I just looked in a pdf brochure of the D200 and you can do multiple exposure with up to 10 images.. You just pick the frames you want to merge.. Same idea as film really, you just back it up to expose on the previous image.. Then, there's also something where you merge two images and adjust the opacity..From your description and what I read in the Nikon brochure, I get a very strong feeling that the D200 cannot do a "true" double-exposure but has the ability to merge two existing images within in the camera (much the way Photoshop would do it).

Doing a true double-exposure would be impossible in any digital camera, in my opinion, because there's no way for the sensor to retain the image information from one exposure while superimposing the information from a second.

John_B
6th of January 2007 (Sat), 07:11
Double exposure theoretically can be done. However the shutter must stay open (closed with lens cap on) or it has to be done in software. Here are two examples of double exposures with using the lens cap.

Here is an exposure of one stuffed animal in two different positions. This shot was done with a 580ex flash set on manual and fired twice. Subject moved midway between exposure, to appear as two different subjects
Seeing Double
http://johnbdigital.com/special_beauty/seeing_double.jpg
Click for Specs (http://johnbdigital.com/special_beauty/seeing_double.htm)

Here is another of 1 TV with camera in 4 different positions. The camera was moved into four different positions and the lens cap was used to expose each shot
Multi Exposure TV
http://johnbdigital.com/special_beauty/multi_tv_exp.jpg
Click for Specs (http://johnbdigital.com/special_beauty/multi_tv_exp.htm)

Jonathan Consiglio
6th of January 2007 (Sat), 11:27
That's pretty cool.. I forgot my 580 has Stroboscopic, or whatever it's called..
I think you'd have much better control in PS than in camera, too.. But, I guess not everyone has Photoshop!

I've designed a few different pamphlets for my company to advertise at the local camera store, and used different images with different opacities.. Not really multiple exposure stuff though..

Personally, I never really cared for it.. I think if it's done right, you can get some nice shots with stroboscopic flash, but like the example the 580's manual gives... I think it would be best used in analyzing a golf swing, or something of that nature.. My Father wolud way overdo double exposure shots with his 630 film SLR.. He thought they were the gratest thing ever! I didn't have the heart to tell him what I actually thought!!

Tdragone
6th of January 2007 (Sat), 13:02
Cruise this thread and see if it's what you're looking for:

http://photography-on-the.net/forum/showthread.php?t=131418

mzamora
8th of January 2007 (Mon), 18:43
That's pretty cool.. I forgot my 580 has Stroboscopic, or whatever it's called..
I think you'd have much better control in PS than in camera, too.. But, I guess not everyone has Photoshop!

I've designed a few different pamphlets for my company to advertise at the local camera store, and used different images with different opacities.. Not really multiple exposure stuff though..

Personally, I never really cared for it.. I think if it's done right, you can get some nice shots with stroboscopic flash, but like the example the 580's manual gives... I think it would be best used in analyzing a golf swing, or something of that nature.. My Father wolud way overdo double exposure shots with his 630 film SLR.. He thought they were the gratest thing ever! I didn't have the heart to tell him what I actually thought!!

Hhahahaha!!!!:lol:

DrPablo
8th of January 2007 (Mon), 20:36
There are a couple ways.

Labor intensive, but potentially with good results, is taking multiple pictures, then using masking and layer blending techniques in PS.

You can also take two exposures, but underexpose them (in camera or in RAW, and making sure they have the same exposure), then combining them using the screen blending mode.

Finally, you can open the shutter (with cable release or whatever) in a dark setting and use flash to illuminate the same subject in different places during the same exposure. Similarly you can block or unblock the lens during different parts of the same long exposure, but that only works for long things like headlight streaks (obviously you can't do that for 1/500 of a second).