The answer to the question that you’re wondering is yes, the Sigma 85mm f1.4 Art lens is indeed much better than the previous version of the lens. At higher megapixels, you start to see the flaws of the older version, but the newer one exudes an image quality that is truly unbelievable. Additionally, it sports a bit of weather sealing. And the ultimate answer to whether or not you should upgrade really has to do with your own intentions. If you absolutely want to stick to using DSLR cameras, then this is a must-buy lens.
But holy crap, is it huge!