Adobe Lightroom 4 is a 'substantial upgrade' with a 50-percent price drop

Still content with Lightroom 3.5? Check out Version 4, which has just emerged from public beta, and you may decide it's time for an upgrade. The revision brings a long list of new features, including improved highlight and shadow processing, better video support, geo-tagging and a Book Module for self-publishing photo books via the Blurb online service. Then there's the clement pricing: $79 as an upgrade or $149 new. Still not sure? DPReview has a detailed assessment at the link below, so don't be jumping to conclusions til you've read it.