Double Exposure

[alibaba]

I was wondering if there is a way to achieve double exposures with a digital SLR. I know I can fix the camera on a tripod and go to town then use PS, but is there a method to do so as if the "film" were not advancing to the next frame after an exposure? Just looking to save some time in "post".

BTW I use a Canon 30D.

[D Thompson]

Very doubtful.

[kgosden]

I seem to recall at least one camera has offered a double exposure like feature, but I cannot recall the brand or model. Even in film days you had a lot more control of the image doing this type of thing post image capture.

[teko]

Nikon cameras have the Overlay Mode in the retouch menu. I never tried it myself though.

Otherwise, you can Photoshop the images.

Update:
Image overlay can combine two RAW images together to produce a combined image, the gain for each image can be adjusted from x0.1 to x2.0 in 0.1 steps.

Example: http://imaging.nikon.com/products/imaging/lineup/d60/incamera/index.htm#incamera08

[alibaba]

Thanks for the input and advice. I wonder why Canon never went the overlay route...

[Beowulff]

I'm not sure about current models, but 3 or 4 years back now a few cameras had a double exposure facility:

Fuji S3
Nikon D2X
Pentax *ist D

Dunno what's on the market today in that regard, but surely one of 'em will have it?


Cheers :)

[Bonzo]

Out of interest I have just remembered this double exposure example using Imagemagick while looking for something else.

http://www.imagemagick.org/Usage/photos/#double

[alibaba]

Thanks for the link Bonzo - some real neat techniques in there.

[teko]

I think it's a lot easier to use image editors (Photoshop, Gimp, etc) than ImageMagick :P.

ImageMagick is best for doing automated process in programs or web scripts.

[alibaba]

I agree, but the more one knows, the better life is...

[reppans]

Nikon cameras have the Overlay Mode in the retouch menu. I never tried it myself though.


In addition to image overlay, later Nikons (D80+, I think) have a regular multiple exposure option. Clicky (http://forums.dpreview.com/forums/readflat.asp?forum=1034&thread=29633723)