Exposure 3 is run from Lightroom as an external editor. To launch Exposure on an image simply select an image (or multiple images for batch processing), and select Photo->Edit In->Exposure 3. You can also right click on the image and select Edit In->Exposure 3. When Lightroom asks you how to edit the photo, we recommend you choose “Edit a Copy with Lightroom Adjustments”. This will tell Lightroom to make a copy of the image in the preferred format for Exposure. For more information on running Exposure from Lightroom you can read our Knowledge Base article.
Batch Mode
When Exposure is run with multiple images from Lightroom, the normal OK button is replaced with an “Apply&Next” button and “Apply to Rest” button. This will let you either go through each file individually and tweak the setting or you can just apply the current setting to the rest of the images in the set.