Jawed
Topic Author
Posts: 312
Joined: Mon Sep 18, 2006 10:47 am

How To Average Layers In Photoshop?

Tue Jan 22, 2008 10:16 pm

I have 4 images taken of the same scene in low-light conditions with a DSLR. To reduce noise, I want to average all of the images to get a single output image.

If I import the 4 images as layers into a single work space, I can set the opacities of the layers as follows, from top to bottom:

image 4 (layer opacity: 25%)
image 3 (layer opacity: 33.33%)
image 2 (layer opacity: 50%)
image 1 (Background layer)

Is there a simpler way to do this? Isn't there an "Average" mode for layer blending?
 
photopilot
Posts: 3087
Joined: Mon Jul 15, 2002 11:16 am

RE: How To Average Layers In Photoshop?

Tue Jan 22, 2008 10:39 pm

This is NOT allowed by A.net rules. Any image submitted to A.net must be a single exposure on either a single frame of film, or a single exposure on a digital camera. You cannot combine multiple images which make it a composite image.
 
Jawed
Topic Author
Posts: 312
Joined: Mon Sep 18, 2006 10:47 am

RE: How To Average Layers In Photoshop?

Tue Jan 22, 2008 10:51 pm

Of course, this doesn't make sense for much aviation photography anyway (unless shooting static aircraft at night I suppose).

I want to use this technique for non-aviation purposes. Any tips?
 
User avatar
Moose135
Posts: 2618
Joined: Mon Oct 04, 2004 11:27 pm

RE: How To Average Layers In Photoshop?

Wed Jan 23, 2008 4:56 am

I haven't tried something like that in PS - I use either Image Stacker for multiple layers or Photomatrix for HDR work.

[Edited 2008-01-22 20:59:07]
KC-135 - Passing gas and taking names!
 
User avatar
jid
Posts: 889
Joined: Wed Dec 01, 2004 7:37 pm

RE: How To Average Layers In Photoshop?

Wed Jan 23, 2008 7:48 am

One way to do what you want is to use layer masks and creating masks for each layer to filter out either the over exposed of under exposed areas. There are loads of ways of doing what you want it all depends on what your separate layers are like.

You can also try the HDR function in PS as this works in similar ways .. but of course both methods are banned at this site.
G7EPN is back after 15 years! Operating all Bands 80mtrs -> 70cms QRZ DX

Who is online

Users browsing this forum: No registered users and 6 guests

Popular Searches On Airliners.net

Top Photos of Last:   24 Hours  •  48 Hours  •  7 Days  •  30 Days  •  180 Days  •  365 Days  •  All Time

Military Aircraft Every type from fighters to helicopters from air forces around the globe

Classic Airliners Props and jets from the good old days

Flight Decks Views from inside the cockpit

Aircraft Cabins Passenger cabin shots showing seat arrangements as well as cargo aircraft interior

Cargo Aircraft Pictures of great freighter aircraft

Government Aircraft Aircraft flying government officials

Helicopters Our large helicopter section. Both military and civil versions

Blimps / Airships Everything from the Goodyear blimp to the Zeppelin

Night Photos Beautiful shots taken while the sun is below the horizon

Accidents Accident, incident and crash related photos

Air to Air Photos taken by airborne photographers of airborne aircraft

Special Paint Schemes Aircraft painted in beautiful and original liveries

Airport Overviews Airport overviews from the air or ground

Tails and Winglets Tail and Winglet closeups with beautiful airline logos