The debate still rages regarding what effects you can achieve digitally in post production and which ones you have to get from specialized glass.  Tools like Photoshop have certainly come a long way in their various blurring and sharpening algorithms as well as many other techniques that were previously only possible to do in camera or the darkroom.  Purists however, will tell you that if you want creamy bokeh, nice blurred backgrounds, tack sharp images, tilt-shifted images or n Read More