Originally posted by maverickh In the days of film, Pentax was famous for its Super Multi Coating ( SMC ) on its lens. We often read about the rich colours produced by certain lens such as the FA Limiteds, FA 28 - 70 f/2.8, FA 80- 200 f/2.8, just to name a few. But given today's digital environment with various software for Post Processing. Is the hobbyist better off buying lower grade lens, and still getting great results through Post Processing. Can fellow Pentaxians kindly comment or advise.
Two things you will get from a better lens that you won't get from a lesser quality one.
Sharpness and flare control.
Sharpness can be artificially gotten via sharpening in post, but this is at the expense of fine detail (not resolved) and sharpening artifacts.
Flare is pretty much just something you have to live with if you get it, and can murder contrast (which can be recovered again at the expense of resolution) and gives all sorts of ugly visual artifacts that are impossible to get rid of in many situations.
If you want to get the most out of a high resolution sensor, top quality glass is still the best solution.
Nothing has changed since the days of film.