DPP is a curious program. It has a very pretty GUI but the backend is packed with flaws, glitches and some plain baffling workflow roadblocks. It's fine for a very small project, or just working carefully with a hero image, but when you need to work quickly with a large number of files, LR or ACR functionality make them the RAW converter of choice for most professionals.Nonsense. Obviously, you don't know DPP or are biased to your own workflow. Why do you need LR or ACR to convert RAW? Just because people say you have to? DPP can do this handsdown and within DPP you can call PS and edit your master piece if you like.
With respect, I do know DPP a lot more intimately than you might imagine. There is no disputing the fact that DPP is highly capable of delivering beautifully processed files. Some might say unrivaled. For problem skintones it can be a godsend.
You may have misunderstood what I'm referring to as a master file. Different entirely to a masterpiece. It's a term in common usage that refers to a file that has generally had a great deal of work done to it all the way from RAW conversion, complex and often deep, time consuming processing in PS. It might be a multi layered PSD or a flattened TIFF with a lot of PP work behind it. Depending on personal output or client needs, it would be self defeating and unwise to sharpen this master file. My client may need the same image delivered for a billboard, a full page glossy magazine advert and for web. Each output has its unique sharpening requirements.
Most professionals and high output amateurs who choose to process through LR don't do so because they've succumbed to marketing or peer hype. I did complex and time consuming evaluation of every commercial RAW converter on the market. Each of them had unique standout qualities, even Silkypix. Raw Essentials which Adobe bought to build Lightroom V1.0 on was superb. But in a busy studio, a pragmatic choice is essential. LR is a highly evolved efficient workflow tool that offers a suite of functions, each with neatly integrated controls and choices. If I need to properly process 100-500 RAW files between morning tea and lunchtime I know where I'll get the job done to meet my deadline...LR 4.0.