multiple exposure

Which is fine with controlled lighting, and if the subjects don't overlap. Sometimes you can't cut and paste though...

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so how did you do that then ?

whoa, cool. are those planes? great idea

Film (4x5 inch large format)... Very easy -- just a straight up multiple exposure, got it developed, and scanned it.

Yeah, they're airplanes leaving Logan airport in Boston.

The film one looks softer, but it's because it's so grossly reduced in size for web sharing compared with the original scan (I've made a 48x60 inch print of it, and it's exceptionally sharp at that size).

I took a similar shot on my 300D a while before, seen below.

I pasted the images on top of one another, used Lighten blending mode (so that the light trails would always be carried through), then masked the background out of all the layers except for the one that looked best. It took hours to do all that masking.

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^^^ That kind of shot is easier to do with film tbh. Probably the only reason I can see to make me keep my EOS30.

Much easier with film.

Which is great for anachronystic losers like me who love to use film.

But I'd imagine it's well within Canon's capabilities to make a DSLR that can do it too.

DrPablo wrote in post #2231263
Much easier with film.

Which is great for anachronystic losers like me who love to use film.

But I'd imagine it's well within Canon's capabilities to make a DSLR that can do it too.

I dunno, when the sensor takes a photo, it's converted to 1 and 0 in jpeg/RAW. A completed file basically. By doing a multiple exposure, you are basically not finishing with that shot yet as they are more information to add. The shutter basically shuts indefinitely until the next shot, what does happen with that half taken first shot?

Raymond Lin wrote in post #2231318
I dunno, when the sensor takes a photo, it's converted to 1 and 0 in jpeg/RAW. A completed file basically. By doing a multiple exposure, you are basically not finishing with that shot yet as they are more information to add. The shutter basically shuts indefinitely until the next shot, what does happen with that half taken first shot?

You'd need to designate it as a multiple exposure first in order to prevent that pixel information from being 'finalized' as you describe.

But that's not so different than film -- I mean you need to calculate such that your final image is fully exposed, not each individual exposure.

Some company called Nikon makes digital SLR cameras that support multiple exposures.

Michael.

The new Pentax K10D will as well.

Will they do multiple exposures of all sorts, or only double exposures?

It is possible on a DSLR camera
Here is a quick shot I just took of one Television with 4 different exposures on one file. No software cut and paste was done.


Multi Exposure TV

IMAGE LINK: http://johnbdigital.co​m …l_beauty/multi_​tv_exp.htm

So it is theoretically possible

yes but thats with one bright subject on a dark background, such a meathod wouldnt do a thing for landscapes.

John_B wrote in post #2231539
It is done with a trick I learned on film (remember that old stuff? ), by just putting the camera on B mode and just put the lens cap on then off move the camera and then the lens cap on and off as many times as needed

That's exactly the technique I used on my first light trail shot above. I just covered the lens with the lens cap while waiting for the subsequent airplane to lift off. Being a large format lens I'd have had to recock and retrip the shutter for each exposure, and that would have made me more likely to accidentally move the camera.

With your shot, John, you could also do it with four separate exposures, paste them as layers, and use Lighten blending.

But as said your technique won't work if you're trying to shoot a picture of someone standing in 3 different places in front of a static background.

For this shot, for instance, I needed to use straight cut/paste/mask to get it to look right, even though the camera was rock steady on a tripod for all four exposures.

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The lens cap trick is clever be isn't there is a huge risk of moving the camera as you are actually touching and attaching a lens cap and then taking it off?

Raymond Lin wrote in post #2231608
The lens cap trick is clever be isn't there is a huge risk of moving the camera as you are actually touching and attaching a lens cap and then taking it off?

which is why i feel its only useful for situations subjects where you want to reposition the camera anyway.