Check this one out for yourself.
Set up your tripod, and capture images of a room—first in jpeg and then in RAW. Take both the images into Adobe Lightroom. No comparison, hands down. You’ll quickly see why every professional real estate photographer shoots RAW.
When you capture photographs in jpeg format, the camera makes all the decisions—exposure, sharpness, color, saturation, etc. These elements are then baked into a file, and you get a readymade photo. That is, the camera corrects the finished photo automatically. But with a RAW file, all the data comes directly off the sensor. You make all these decisions and finish the photo yourself. The RAW format also gives you more flexibility in the editing process.
The only drawback of RAW files is they are two or three times as large as JPEG files. But with the sharp fall in the price of hard drives, file size shouldn’t be an issue.
Worried your RAW files will be redundant in 10 or 20 years, and all your real estate photography efforts will be pointless? You don’t need to. In 2004, Adobe launched DNG (Digital Negative), an open source, lose-less RAW format. With this format, you can edit your RAW files 10 or 20 years in the future.