Hi I have a photo which I shot in RAW and processed with another photo program. I did a lousy job of processing it and want to re-do it on Light Room, but don't know how to return it to its original state, if it can be done at all. I didn't keep the original photo on my SD card.
Appreciate any advice
Assuming you are talking about the new Lightroom CC (the cloud-based Lightroom), when you are in the edit mode there is an… At the bottom of the edit menu. When you click on that there is an option to revert to original.
If you're talking about Lightroom Classic CC or an older version of Lightroom, when you are in the Develop mode there is a Reset button beneath the panels on the right-hand side of your monitor. Clicking that reset button will restore the image to the default settings established in Lightroom. This doesn't necessarily mean the image will be as it was in the camera. But it will be restored to what it was when it was first imported to Lightroom. Lightroom always applies certain camera defaults to an image. Those defaults can be changed by the user.