Researchers Develop Method for Getting High-Quality Photos from Crappy Lenses
It’s a research result for the moment, far from being ready for the market, but once such a plug-in became available for LightRoom and similar apps, I’d certainly go for it! It promises to sharpen images based on knowing the sharpness errors of lenses (‘point-spread functions’ of PSFs). You find a more extended piece, with further links, under:
Does that mean we don’t have to buy expensive lenses anymore? Not quite, I think. For one thing, It still takes a lot of glass to make lenses with large apertures, which are needed for the selective focus and nice bokeh that so often distinguish good pictures.