There was a post on the Imaging Professional Blog a few months ago showing how to use Adobe Photoshop to dramatically reduce the noise in a series of images that were shot at high ISO.

“This technique describes a method to stack several high ISO source images in Photoshop CS3 or CS4 Extended, in order to minimize random noise – in effect creating a synthesized long duration low-ISO exposure.”

Sometimes you really just don’t have the light you need to shoot at low ISO and still get the high shutter speeds you need to shoot hand held. If you don’t have a tripod with you then your only option may be to crank up the ISO. This will likely create some very noisy images. Using this Virtual Tripod technique will allow you to easily reduce that noise in post processing after the fact. In my experience this method works far better than noise reduction software and can result in some really great looking, noise-free images.

The original article described in detail a method to do this once you already have a series of images loaded up in Photoshop. I took those instructions and modified them slightly to simplify their use with Adobe Lightroom. I also created a Photoshop Action to automate the process. Depending on how many images you use, the resolution of your camera, and how fast your computer is, this method could take several minutes to run (or maybe even longer in some circumstances. But using this method is very easy, and extremely effective!

Example Images

The first image is one of the original images, essentially straight out of the camera. There may have been some minor global edits applied in Lightroom, but no noise reduction has been performed.

The second example is the resulting image after application of the OD Virtual Tripod Action. This was done using a series of 5 images that were shot using the high speed shooting mode with my Canon 40D.

The difference isn’t really noticeable when the images are rezzed down for on-screen display, but when you zoom in the noise in the original is extremely obvious (I’m really not that much of a pixel peeper, but even when looking at the originals in Lightroom the difference was extremely obvious.)

Here is a close up of one of the original images with no edits applied.

And here is a close up of the resulting image after application of the OD Virtual Tripod Action.

I think you will agree that the difference is simply amazing. These images were shot at ISO 400. Imagine if I had used originals at ISO 1600 or even 3200. I generally find the images shot at ISO’s above 800 on this camera are barely useable. Using this technique has allowed me to create a few really nice images that I wouldn’t even have tried to make if I didn’t have this tool in my kit.

Try it, you’ll like it!

Install the OD Virtual Tripod Action

1. Skip down to the end of this article to download the Free Virtual Tripod Photoshop Action
2. Extract the file called “OD_Virtual_Tripod.atn” from the zip file you just downloaded, and save the action to a safe place on your computer (that you will remember).
3. Open Photoshop
4. In the Actions Palette choose “Load Actions…” and navigate to the file you just saved. Choose “Load“.
5. You will now have a new folder in your Actions Palette called “OD Virtual Tripod“

If you need more help with loading actions (or using them) then you should check out the article called Photoshop Actions for Photographers over at PhotoshopSupport.com. They do a great job of teaching all about Photoshop Actions.

Using the OD Virtual Tripod Action

1. Shoot a series of photos in rapid fire. Use your best “Human Tripod” technique while shooting them. Hold your arms in tight to your body and try to be as still as possible. If there is a small amount of camera shake or body movement then the Photoshop Action will take care of aligning the images properly. This won’t work so well for large movements or for moving subjects. I suggest that you use at least 5 images, but any more than 12 is probably overkill. You can read more about how to actually make the images in the original article over at the Imaging Professional Blog.
2. Import the files into Lightroom. Do any basic edits you want to the images, but be sure to do the same edits to all of the images.
3. Select all the images.
4. Right Click on one of the files and choose “Edit In” and then “Open as Layers in Photoshop…“
5. Run the OD Virtual Tripod Action
6. When the action finishes, Save and Close the resulting file in Photoshop. The finished image will automatically get imported back into Lightroom.
7. Inspect the resulting image to ensure that there is no ghosting and that the edges are clean. If the images didn’t line up properly, or if one (or more) of the images was severely out of alignment with the others then you may need to do some additional cropping to clean up the images. You may even need to repeat the process after deselecting the offending image(s) that were badly aligned.

Download the Free Virtual Tripod Photoshop Action

• OD Virtual Tripod (Photoshop Action)

That’s it. Try it out and drop me a comment to let me know how it works! This action should definitely works in Photoshop CS4, and it may also work in prior versions. Please let me know if you try it with other versions and I will compile a compatibility list.

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