Stacking images to remove people from Images.
Discussion
Im soon off travelling again and I've heard of the above technique used by architectural photographers to remove people from images.
My understanding is you take multiple shots without moving the camera then stack them in PS to remove the people. Is this correct? also does anyone have any links to anything that would explain step by step so I could learn this technique.
My understanding is you take multiple shots without moving the camera then stack them in PS to remove the people. Is this correct? also does anyone have any links to anything that would explain step by step so I could learn this technique.
I've done this sort of thing before. I can't remember how many shots I actually took, but they were all taken on a tripod. All images were then imported to Photoshop as separate layers. At the very bottom of the stack I had a simple layer filled with bright pink, so that as I erased people, I could see parts of the image that still needed scenery filling in to cover the gaps left by the missing people.
It's a lot simpler than it sounds, and doesn't take very long either. I keep meaning to use the technique on other projects but never seem to get round to it.
It's a lot simpler than it sounds, and doesn't take very long either. I keep meaning to use the technique on other projects but never seem to get round to it.
DIW35 said:
I've done this sort of thing before. I can't remember how many shots I actually took, but they were all taken on a tripod. All images were then imported to Photoshop as separate layers. At the very bottom of the stack I had a simple layer filled with bright pink, so that as I erased people, I could see parts of the image that still needed scenery filling in to cover the gaps left by the missing people.
It's a lot simpler than it sounds, and doesn't take very long either. I keep meaning to use the technique on other projects but never seem to get round to it.
No need to do it manually, just use the "Median" layer blending option. This chooses the most common from the underlying layers, which will be the ones without any people in.It's a lot simpler than it sounds, and doesn't take very long either. I keep meaning to use the technique on other projects but never seem to get round to it.
james_tigerwoods said:
JSS 911 said:
Or you could use a long exposure, this was 67sec .As long as people are moving you should loose most of them.
St Pauls by John, on Flickr
I have to ask, how did you do a 67sec exposure in the day?St Pauls by John, on FlickrNighttime, I know, but daytime?
Camera: Canon EOS 7D
Lens: EF24-70mm f/2.8L USM
Aperture: ƒ/9.0
Focal length: 43.0 mm
Exposure time: 67 secs
ISO: 100
Is very impressive indeed, I often wondered how this effect was achieved, I always thought the photographer crawled out of bed at some ungodly hour!
As stated above - an ND filter will do --- or a piece of welding glass if you are a cheapskate like me -- just remember to do a custom white balance too!
Nighttime, I know, but daytime?EXIF info shows:
Camera: Canon EOS 7D
Lens: EF24-70mm f/2.8L USM
Aperture: ƒ/9.0
Focal length: 43.0 mm
Exposure time: 67 secs
ISO: 100
Is very impressive indeed, I often wondered how this effect was achieved, I always thought the photographer crawled out of bed at some ungodly hour!
rich888 said:
james_tigerwoods said:
JSS 911 said:
Or you could use a long exposure, this was 67sec .As long as people are moving you should loose most of them.
St Pauls by John, on Flickr
I have to ask, how did you do a 67sec exposure in the day?St Pauls by John, on FlickrNighttime, I know, but daytime?
Camera: Canon EOS 7D
Lens: EF24-70mm f/2.8L USM
Aperture: ƒ/9.0
Focal length: 43.0 mm
Exposure time: 67 secs
ISO: 100
Is very impressive indeed, I often wondered how this effect was achieved, I always thought the photographer crawled out of bed at some ungodly hour!
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