I've just started using Adobe Lightroom 3, and so far I'm very, very impressed with it. I have found however that JPEGs I import at 7-10mb seem to be reduced down to 0.7-1mb when I export them. I've checked the size and it's still exporting full size, and at 75%quality. Is there likely to be a massive IQ reduction with this happening, or is that one of the things that makes LR3 so good?
At the moment it seems to be a bit of a bonus as it massively reduces the time it takes to upload photos to my website, I'm just trying to figure out what effects it is having on the quality of my products.