The Secret Power of the Quick Develop Module in Lightroom CC

The Quick Develop panel is an excellent way to make relative changes to large numbers of images. For example, lets assume that yesterday you retouched a series of images in the Develop module – making slight changes to each image’s exposure. Today however, you are finding that they are all about +1/3 of a stop too dark (perhaps you were tired when editing or had too much coffee or whatever). If you were to add +1/3 of a stop to one of the images in the Develop Module (that perhaps you had already increased by 1/2 stop ( or +.5) yesterday) the Exposure slider would read +.83 (.5 + .33 = .83). Using the Sync command in the Develop Module to apply that change to other selected images, will NOT add +1/3 (.33) of a stop to each already manipulated image – instead it will change all of the other image’s exposure value to the same exposure value of the image being “Synced” from (+.83). If on the other hand, you have that same series of images with individually corrected exposure values, and in Quick Develop you clicked on the single arrow next to exposure (to add 1/3 of a stop), Lightroom would add +.33 to all images. Secret power!
And here is a video demonstrating this.