Movie 09


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Movie 09

  1. 1. Movie 9 Creating panoramas with Photomerge 1
  2. 2. Martin Evening Creating panoramas with Photomerge The Photomerge feature has been made a lot simpler to work with. Gone is the interactive Photomerge dialog. This is because the recent improvements to Photomerge alignment and blending should be all you need to produce the best photomerged results and in the majority of cases the Auto layout option is all you need. There are two ways to generate a Photomerge. You can go to the File ➯ Automate menu in Photoshop and choose Photomerge... This will open the dialog shown in step 2, from where you can choose say, ‘Add Open Files’ and add these as the source images. Or, you can use Bridge to navigate to the photos you wish to process and open Photomerge via the Tools ➯ Photoshop submenu. To get the best photomerge results, you need to work from photographs where there is a significant overlap between each exposure. You should typically aim for at least a 25% overlap between each exposure and overlap the photos even more if you are using a wide angle lens. For example, the Photomerge in CS4 is even optimized to work with certain fish eye lenses, but if you do so, you should aim for maybe as much as a 70% overlap between frames. Here are the basic steps you would use. 1 To create the photomerge shown here, I started by selecting the four photographs shown here in Bridge. I then went to the Tools menu and chose Photoshop ➯ Photomerge... 2 The layout options Auto The Auto layout works best in most cases and I suggest that you use Auto first to see what it does, before considering any of the alternative layout options. Auto tends to flatten the perspective and prevent the corners of a photomerge from shooting outwards. Perspective The Perspective layout doesn’t inhibit the perspective from becoming exaggerated. It can produce good results when the processed photos are shot using a moderate wide angle lens or longer, but can otherwise produce very distorted composites. Cylindrical The Cylindrical layout aligns photos on the horizontal axis only. This is useful for keeping the horizon line straight when using Photomerge to process a series of photos that make up an elongated panorama. Spherical This is new to CS4. It can transform and warp the individual photos in both horizontal and vertical directions. This layout option is more adaptable when it comes to aligning tricky panoramic image sequences. Collage This positions the photos in a photomerge layout without transforming the individual layers, but does rotate them to achieve the best fit. Reposition The Reposition layout simply repositions the photos in the photomerge layout, without rotating them. This PDF is provided free with the Adobe Photoshop CS4 for Photographers book. Not for distribution or resale.
  3. 3. Martin Evening Blending options The ‘Blend Images Together’ option completes the Photomerge processing because it adds layer masks to each of the photomerged layers (see the Layers panel view in step 3). You can choose not to run this option and select the Edit Auto-Blend Layers option later to achieve the same end result (see page 455 in the book). ‘Vignette Removal’ and ‘Geometric Distortion Correction’ are optional and can help improve the result of the final image blending, especially if you are merging photos that were shot with a wide angle lens. 2 This opened the Photomerge dialog, where you’ll note that the ‘Auto’ layout option was selected and the four selected images were automatically added as source files. All I really needed to do here was to check the three options at the bottom and click OK to proceed. 3 In most cases, the Auto option is usually the best one to select, and as you can see here, it aligned the four photos automatically, applied a blend step to blend the tones and colors between the layers, followed by an auto layer mask step in which the individual layers ended up being masked so that each part of the photomerge image consisted of no more than one visible layer. 3 This PDF is provided free with the Adobe Photoshop CS4 for Photographers book. Not for distribution or resale.
  4. 4. Martin Evening Adobe™ Photoshop™ CS4 for Photographers This PDF on digital capture is supplied on the DVD that comes with Martin Evening’s book: Adobe Photoshop CS4 for Photographers. This latest update in the Adobe Photoshop for Photographers series contains 704 pages in full color, plus a DVD containing video tutorials. The book layout has been further improved to make navigation easier and contains updated advice on everything you need to know about using Photoshop, from digital capture to print output, as well as all that is new in Adobe Photoshop CS4. PDF usage This PDF extract is available to view and print. You may share this PDF file or any links to the PDF file with others, but the copyright of the material and images remain the property of myself. The contents may not be modified in any way, or used commercially without express permission from the author. Website There is a website for the book from where you can find more information and download more PDF sample pages from the book. 4 To order the book Adobe Photoshop CS4 for Photographers is published by Focal Press. ISBN: 9780240521251 The title is stocked in most major bookstores throughout the world and is also available to purchase from: as well as through the on-line bookstores: and This PDF is provided free with the Adobe Photoshop CS4 for Photographers book. Not for distribution or resale.