Merge to HDR Pro in Photoshop CC

Adobe Camera Raw and DNGAdobe Photoshop

There is a new feature when working in the Merge to HDR Pro feature in Photoshop CC. If you set the Mode to 32 bit, under the histogram is an option to “Complete Toning in Adobe Camera Raw”.


Enabling this option, changes the “OK” button to “Tone in ACR”. Clicking “Tone in ACR” tells Photoshop to convert the 32 bit HDR layer into a Smart Object and automatically apply Camera Raw as a Smart Filter.



Then, simply apply your desired settings in the Camera Raw Filter and click OK. Because you are working with a smart object, not only can you double click the layer thumbnail to re-edit the Camera Raw options, but you can also use the Smart Filter mask to selectively show and hide the effect AND change the Blend Mode and Opacity of the filter!


Note: only the following Blend Modes are available when using Camera Raw as a Smart Filter: Normal, Dissolve, Darken, Multiply, Darker Color, Lighten, Linear Dodge (add), Lighter Color, Difference, Subtract, Divide, Hue, Saturation Color and Luminosity.

Adobe Camera Raw and DNG, Adobe Photoshop

Posted on 06-26-2013


  • By kathy martinez - 9:21 AM on July 25, 2013  

    I can’t get LR 5 to support 32 bit files. What am I doing wrong?

  • By Derek Doar - 5:53 AM on August 7, 2013  

    When Photoshop has merged the 32 bit HDR layer into a Smart Object and automatically applied Camera Raw as a Smart Filter most of the filter to do further processing do not work in 32 bit

    I have tried many ways to change this 32 bit ProPhoto Source Space layer to be a 16bit layer with a ProPhoto as Source Space. Each method that I try to change the Mode to 16 bit changes the Color Space to sRGB.

    How can I work on it in 16 bit and retain ProPhoto as the Color Space?

    • By Julieanne Kost - 10:57 AM on August 8, 2013  

      When you convert from 32 bit to 16 bit, Photoshop will convert the image into your working space (found under the Color Settings). So if your working space for RGB is sRGB, that’s what the file will be converted to.

  • By Dawn - 12:36 PM on August 10, 2013  

    If I want to adjust the HDR merged image in Lightroom, so should I not complete toning in Adobe Camera Raw? I want to adjust the image in Lightroom, unless a better workflow would be adjusting it in Photoshop. I am a novice to HDR and I used to be able to adjust the images in Lightroom and see the exterior scenery inside a room, but now it isn’t working in Lightroom with the toning selected.