What's a good alternative for Camera Raw Filter for subtle exposure modifications?
I want to make subtle exposure modulations in the white dress in the center of this image where there are shadows inside the blue box. I would normally use the paintbrush in Adobe Camera Raw but this image is too big. I tried making a selection of the dress and making that a Smart Object and adding Camera Raw Filter but it must be referencing the entire file as it says it's still too big. For most things where I can't use Camera Raw Filter I have figured out alternatives using adjustment masks but I can't do that here. I want to lighten the shadows so they blend in with the rest of the dress. I tried creating a selection of the dress; adding a Curves adjustment layer; lightening the selection; selecting the paintbrush and painting over the parts of the dress I don't want to be lightened (the non-shadows part) but this didn't work well, I couldn't get fine enough control over the shadows. Can anyone suggest a way to achieve this objective? Thank you.

