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.

I’ve had my new Canon EOS 1D Mark IV camera for a little over a week now and I thought I would share a little bit about my experience with it so far. This is my first pro level 1D series camera and it really is a different beast than the Canon EOS 40D that I’ve been using for the last couple of years. I have definitely had a steep learning curve while figuring out the differences between the 1D and the 40D. Regardless, I have some definite thoughts already and I wanted to share them here. I’d love to hear some feedback from other people who have already made the jump or are planning to do so soon. Please hit me in the comments below!

The Things I Really Like

1. High ISO Performance: Simply put, this camera shots in the dark. I’m not a major pixel peeper and I haven’t done any measurements using a microscope or by zooming in to 10000%, but it’s very clear just by looking at the images shot at ISO 5000 that they are cleaner than images at 1000 on my 40D. I have no problem just letting the Auto ISO pick whatever ISO it needs.
2. Dynamic Range: Not only is the ISO performance better, but this camera also finds detail in the shadows unlike any camera I’ve ever used before. Some of the images right out of the camera have some of that surreal tonemapped look that HDR images often display. In fact some of my images see into dark areas that I could barely see with my eyes. It’s really quite incredible.
3. Auto ISO: I typically shoot in aperture priority and with my 40D I often had to manually choose a higher ISO than that camera would pick in auto mode just to maintain an acceptable shutter speed. The Mark IV knows what ISO it needs to pick to prevent motion blur and it has such a huge range of acceptable ISO’s that it has a huge amount of leeway to do so. This is absolutely my favorite feature of the new camera!
4. 7 Stop Auto Exposure Brackets: I do a lot of exposure blending and I love to have 5 to 7 images to choose from. I don’t always use them all, but it’s nice to have them. The 40D will shoot a maximum of 3 images per bracket and as a result I always had to shoot 2 brackets to get the shots I wanted. This often caused a slight shift in the camera position while I was changing the exposure setting, and resulting images were out of register. I love that I can now just tell the camera to shoot 7 images and then use the self timer to let it rip!
5. Better Autofocus: The autofocus system on this camera is so different than the 40D that it’s still a little bit alien to me. I haven’t quite figured out how to use best it in every situation, but two things are really great. The first is the AF speed. Every one of my lenses focuses faster and more accurately on this camera than they did on my 40D. I know that my 40D needs an overhaul and I will be sending it to Canon soon. But even when it was brand new it didn’t perform anywhere near as well as this one. The other thing is that I can now shoot with lenses (or combination’s of lenses and teleconverters) having a maximum aperture of only f/8. Previously when I used a TC on my Canon EF 100-400mm f/4.5-5.6 L IS lens (which has an effective maximum aperture of f/8) on the 40D I had to manually focus the lens. The 1D Mark IV has no problem focusing with this combination, even in the relatively low light after the sun sets or before it rises. It is fast and accurate and that’s a good thing! (Yes, I realize that this combination is not recommended, but sometimes that extra length is the most important factor…)
6. 2 Card Slots: I love that every one of my images can be immediately backed up onto a second card at the time of capture. I’m a backup fanatic and this is a huge improvement over having only 1 card slot. Unfortunately video can only be saved on one card, so it doesn’t get backed up in camera.
7. Video: Speaking of video… I’ve never been much of a videographer, but I have been doing more and more of it lately and I’m increasingly excited that this camera has a 1080p HD video mode. I will definitely be using it, but I also have a lot to learn before I can do it effectively.

The Things I Don’t Like

1. No Custom Exposure Modes: My 40D has three programmable modes on the mode dial (C1, C2, and C3) that could be programmed with shooting settings for instantly access in different shooting settings. I used these all the time and the fact that the 1D cameras don’t have them surprised me a lot. I knew that there was no mode dial, but I still expected to be able to choose the custom modes using the same mode button and menu used to choose the other exposure modes. I think the rationale for not having them is that most pros will carry 2 (or more) cameras and each camera will be set up for a specific type of shooting. But it would be so easy to include them for those of us that don’t want to carry 2 big cameras all the time that I just can’t understand why Canon would leave them out.
2. 2 Types of Card Slots: I love that there are two slots, but I hate that I now need 2 different types of memory cards. I’ve been shooting solely on CompactFlash cards for a long time and now I also need to carry SDHC cards. Fortunately SDHC cards are relatively cheap and I was able to pick up a few at very reasonable prices over the holiday season.
3. No Dedicated Video Start Button: The live view mode can be used to control the still shooting settings, or for shooting video, but not both. If you want to switch between them then you must first go into the menu to tell the camera if live view should be used for stills or for video. This is really annoying for anyone that uses the camera for both video and for landscape shooting, and there should be a way to switch between the modes without having to dive into the menus.

The Things that are Just Different (not better, not worse)

• Size: the 1D is much bigger and heavier than the 40D. I don’t mind this, but it does take some getting used to.
• Integral Battery Grip: this is a big part of the reason why it is bigger and heavier. Some people will love this as it gives a lot more battery power and also provides an extra set of shooting controls for when the camera is in the portrait orientation. I’ve never really had a burning need for either of these features, so it’s not really a big advantage for me. I will definitely use the extra controls for shooting portrait, but I’ve never had a problem with battery life before.
• No Pop-Up Flash: I almost never used the flash on my 40D, so not having one on the Mark IV won’t hurt me. I’m more than a little dissapointed that the 1D didn’t get the built in wireless flash controller that the Canon EOS 7D recently came out with, but even that’s not that big a loss. I normally use radio frequency remote triggers for my flashes anyway.

Well that’s everything I have to say for now. These are just my initial impressions and I’m sure that these lists will grow over the coming weeks and months as I learn more about my camera. Like I said above, I’d love to hear about your thoughts and experiences, so please leave a comment with anything you’ve got!