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rtouart
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How do I locate bracketed exposures?

Feb 8, 2013 11:41 AM

Tags: #bridge_search

I have a folder with over 600 similar images.  I know that some of those were bracketed for HDR processing.  Is there any way to filter these?

 
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  • Currently Being Moderated
    Feb 8, 2013 9:00 PM   in reply to rtouart

    Use Bridge (assuming you have Photoshop and not Photoshop Elements) It can filter according to the metadata. I have't tried filtering exposure, but it should be possible as the data is there. (again assuming the photo is taken directly from the camera and is not altered in a way to remove the metadata)

    Man I am doing a lot of assuming tonight...

     
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  • Currently Being Moderated
    Feb 9, 2013 12:34 AM   in reply to rtouart

    At the moment you would have to sort by date created then eyeball them.

    It's not very friendly though.

    I was going to write a script to show the values but there could be three fields to check.

     

    Exif value ExposureBiasValue, this is from the camera.

     

    If Adobe Camera Raw has been used you can get two values depending what process you use

    Process 2012 uses Exposure2012

    Process 2003/2010 uses Exposure

     
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  • Currently Being Moderated
    Feb 10, 2013 2:59 AM   in reply to rtouart

    What you can do is add the Exposure Bias Value to the tooltip when you hover over a thumbnail.

    So if you have them sorted by time taken it is easy to see what needs to be stacked.

     

    Here is the code to do this...

     

     

    EBV = function(event){  
       if ((event.type == 'hover') && (event.object instanceof Thumbnail)) {
               var Thumb  = new Thumbnail(event.object.spec);
                var md = Thumb.synchronousMetadata;
                    md.namespace = "http://ns.adobe.com/exif/1.0/"; 
                    var ebv = md.ExposureBiasValue.split('/');
                    ebv = ebv[0]/ebv[1];
                    if (!isNaN(ebv)){
                Thumb.core.itemContent.tooltip = "Exposure Bias Value = " + ebv;   
                }
          return { handled:false};
      }
    }
    app.eventHandlers.push( { handler: EBV } );
    var prefs = app.preferences;
    try{
    if(!prefs.ShowTooltips) prefs.ShowTooltips=true;
    }catch(e){}
    
    
     
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  • Currently Being Moderated
    Feb 10, 2013 6:31 AM   in reply to rtouart

    This might help...

     

    Save the script as plain text with a jsx extension

     

    Preferences - Startup Scripts
    At the bottom click the "Reveal Button" this will open the folder where the script should be placed.
    Close and restart Bridge.
    Accept the new script.

     

    If you just want to test it out without installing the script you could:-

    Copy and paste the script into ExtendScript Toolkit (this gets installed with photoshop)

    Select Bridge as the target in the dropdown list (top right)

    Make sure Bridge is running then run the script.

    The script will only be active for that one session of Bridge.

     
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