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Reducing visual noise

From: Aperture 3 Essential Training (2012)

Video: Reducing visual noise

Sometimes when we push the ISO high on an image, one of the byproducts of doing that is that we get a little bit of image noise. And we have a tool in Aperture to help us reduce that Noise. It won't get rid of it, but we can downplay it a little bit, and I want to show you how it works. So, we'll work with this shot right here. And in the Metadata, as you'll see, it was shot at ISO 1600. So, you can guess that there will probably be some Noise, especially in the shadow areas of this image.

Reducing visual noise

Sometimes when we push the ISO high on an image, one of the byproducts of doing that is that we get a little bit of image noise. And we have a tool in Aperture to help us reduce that Noise. It won't get rid of it, but we can downplay it a little bit, and I want to show you how it works. So, we'll work with this shot right here. And in the Metadata, as you'll see, it was shot at ISO 1600. So, you can guess that there will probably be some Noise, especially in the shadow areas of this image.

So, let's take a look at it. I'm going to hit the V key here, hit the V key again, and already we can see some Noise in here, but I'm going to hit the Z key, so we can zoom on in. And we have especially Chromatic Noise here, where we have some color artifacts in there. So, what we can do is go to our Adjustments pop-up window, and go to Noise Reduction, and we basically have two settings. We have a Radius setting, like in our other corrections, determines the area from the pixel that's going to be affected, and then Edge Detail.

And we're always sort of walking the compromise. If we want to maintain a lot of Edge Detail, then there is going to be some tradeoff on the amount of reduction that takes place, so let me show you how that works. So, we'll just watch this area here, and I'll go ahead and up the Radius all the way, and then we'll pull the Edge Detail down. And you can see that the image definitely gets softer. Let's turn it off and on. So, the Noise itself is reduced, but at the same time, we've lost just some overall edge sharpness too.

I am going to hold down the Spacebar and move. So, let's take a look how this is affecting our image. See? If we look at the difference - I mean when we go to extremes like this, we're losing a lot of detail in our image, and this might be a case where the Noise is actually better than the loss of detail. But that doesn't mean we can't find a happy medium here. Let's bring our Edge Detail up, and bring our Radius down a little bit. Now we might not be getting quite as much reduction in the Noise, but overall, our picture has been harmed less.

Let's turn that off and on. So, here the Noise comes back pretty strong with it off, but we are getting some reduction in Noise but not at the sake of the whole picture. And I think that's what you want to strive for when you work with Noise Reduction. Understand that you are not going to completely eliminate Noise with this tool. There are other third-party tools out there that are just dedicated to working on this, so that you can probably get stronger reduction with.

But it does help you downplay a little bit. Just keep in mind that you don't want to sacrifice the rest of your image in order to reduce the Noise. So, find that happy medium by working these two sliders, and see what you can do.

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Aperture 3 Essential Training (2012)

128 video lessons · 15160 viewers

Derrick Story
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  1. 2m 16s
    1. Welcome
      1m 5s
    2. Using the exercise files
      1m 11s
  2. 41m 2s
    1. Understanding the system requirements
      1m 46s
    2. Understanding key Aperture terms
      6m 5s
    3. Touring the interface
      4m 43s
    4. Setting essential preferences
      7m 41s
    5. Customizing the top toolbar
      2m 5s
    6. Setting up two monitors
      2m 44s
    7. Configuring for faces and places
      5m 37s
    8. Understanding RAW files
      5m 5s
    9. Following the recommended Aperture workflow
      3m 23s
    10. Running Aperture Library First Aid
      1m 53s
  3. 45m 49s
    1. Preparing for import
      7m 38s
    2. Using managed libraries or the referenced file approach
      8m 7s
    3. Creating metadata presets
      5m 23s
    4. Adding keywords on import
      1m 44s
    5. Importing images from a digital camera
      4m 48s
    6. Using the RAW+JPEG option
      3m 36s
    7. Importing movies from your digital camera
      3m 10s
    8. Importing images from a hard drive
      4m 29s
    9. Importing images from an iPhone
      3m 48s
    10. Importing live images from an iPad or an iPhone
      3m 6s
  4. 39m 22s
    1. Working in Projects view
      6m 33s
    2. Working in Photos view
      3m 22s
    3. Viewing in full-screen mode
      5m 25s
    4. Zooming to actual size
      1m 23s
    5. Using the Loupe for a closer look
      3m 24s
    6. Showing focus points
      1m 28s
    7. Using Quick Preview
      1m 22s
    8. Proofing profiles and on-screen proofing
      2m 58s
    9. Customizing metadata overlays
      5m 26s
    10. Managing previews
      5m 34s
    11. Learning the heads-up displays
      2m 27s
  5. 24m 21s
    1. Creating projects and albums
      3m 22s
    2. Rating images by stars and color
      9m 52s
    3. Flagging images
      2m 0s
    4. Organizing a series with stacks
      5m 47s
    5. Grouping images with Smart Albums
      3m 20s
  6. 17m 22s
    1. Understanding the Aperture 3 library
      2m 45s
    2. Switching between Aperture 3 libraries
      2m 21s
    3. Exporting single or multiple projects as libraries
      3m 0s
    4. Merging multiple libraries into one
      3m 53s
    5. Splitting libraries
      3m 5s
    6. Sharing libraries
      2m 18s
  7. 58m 21s
    1. Defining the difference between master and version files
      4m 47s
    2. Working with the Adjustments pane
      6m 28s
    3. Updating RAW processing from previous versions of Aperture
      5m 55s
    4. Reading a histogram
      2m 8s
    5. Adjusting white balance
      2m 31s
    6. Adjusting exposures
      4m 37s
    7. Enhancing photos
      3m 24s
    8. Adjusting highlights and shadows
      2m 34s
    9. Customizing auto adjustments for levels and curves
      1m 50s
    10. Adjusting tonality with the Levels tool
      5m 45s
    11. Adjusting colors
      5m 5s
    12. Converting color pictures to black and white
      4m 14s
    13. Sharpening edges
      5m 54s
    14. Using the Vignette effect
      3m 9s
  8. 41m 13s
    1. Cropping images
      4m 39s
    2. Retouching blemishes
      7m 39s
    3. Fixing spots
      3m 2s
    4. Using Straighten Crop and Flip
      2m 19s
    5. Fixing a chromatic aberration
      2m 9s
    6. Reducing visual noise
      3m 5s
    7. Making adjustments with the Curves tool
      8m 53s
    8. Rotating images
      1m 22s
    9. Removing the Vignette effect
      2m 0s
    10. Using the Color Monochrome and Sepia tools
      4m 27s
    11. Considering the Sharpen tool
      1m 38s
  9. 44m 37s
    1. Introducing brushes
      2m 53s
    2. Using quick brushes
      7m 7s
    3. Using adjustment brushes
      4m 26s
    4. Retouching portraits with adjustment brushes
      5m 10s
    5. Creating multiple bricks for a single adjustment
      3m 25s
    6. Applying presets
      5m 46s
    7. Modifying presets
      2m 39s
    8. Highlighting hot and cold areas
      1m 51s
    9. Roundtripping to Photoshop
      3m 49s
    10. Using the edit plug-ins
      2m 52s
    11. Customizing the Adjustments pane
      1m 30s
    12. Batch processing with Lift and Stamp
      3m 9s
  10. 20m 41s
    1. Setting up face recognition
      4m 37s
    2. Searching for faces
      3m 43s
    3. Working with images that have existing tags in places
      3m 18s
    4. Adding geo tags using places in Aperture
      4m 28s
    5. Searching by place
      4m 35s
  11. 15m 42s
    1. Applying keywords
      4m 52s
    2. Creating unique captions quickly
      3m 17s
    3. Batch changing
      7m 33s
  12. 7m 0s
    1. Using the Search box
      4m 24s
    2. Creating Smart Albums for searching
      2m 36s
  13. 12m 48s
    1. Exporting masters and versions
      9m 10s
    2. Using the export plug-ins
      3m 38s
  14. 6m 44s
    1. Developing a backup strategy
      2m 23s
    2. Backing up with vaults
      2m 18s
    3. Restoring from a vault
      2m 3s
  15. 29m 52s
    1. Viewing your images via a quick slideshow
      3m 54s
    2. Setting up complex slideshows
      8m 19s
    3. Customizing individual slides
      8m 6s
    4. Adding video to your slideshows
      4m 13s
    5. Pulling a still frame from a movie
      1m 37s
    6. Exporting slideshows
      3m 43s
  16. 21m 39s
    1. Preparing your book project
      7m 9s
    2. Adjusting your book
      4m 54s
    3. Creating a custom template
      7m 2s
    4. Outputting your book
      2m 34s
  17. 22m 21s
    1. Emailing a photo from Aperture
      3m 27s
    2. Seeing your Aperture library from other applications
      1m 59s
    3. Building a web page
      4m 57s
    4. Publishing a web gallery
      3m 22s
    5. Publishing images to Flickr
      5m 58s
    6. Publishing images to Facebook
      2m 38s
  18. 10m 58s
    1. Printing a single image
      6m 32s
    2. Printing multiple images
      3m 4s
    3. Ordering prints from within Aperture
      1m 22s
  19. 36m 8s
    1. Taking advantage of Retina display Macs
      1m 56s
    2. Understanding the unified library for iPhoto and Aperture
      3m 2s
    3. Getting the most out of the advanced white balance adjustment
      4m 5s
    4. Understanding the changes in the revised Shadows and Highlights tool
      5m 23s
    5. Using Professional Auto Enhance as a starting point for image editing
      3m 24s
    6. Creating your own Auto Enhance presets
      2m 6s
    7. Using iPhoto effects in Aperture
      1m 34s
    8. Increasing performance with Fast Browsing combined with Quick Preview
      3m 40s
    9. Controlling Photo Stream in Aperture
      3m 52s
    10. Deleting images from your Photo Stream
      2m 2s
    11. Deleting images from the iPhone, reordering projects, and setting the desktop photo
      2m 33s
    12. Transferring photos into Aperture from the iPad and the iPhone
      2m 31s
  20. 1m 35s
    1. Looking ahead
      1m 35s

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