Originally posted by Mrgoodintention I have the 50mm & 77mm. Iv been doing more research and the following seem to get great reviews : sigma 18-35mm Art & sigma 35mm Art; Pentax 24-70mm. Has anybody used or heard anything about these lenses? I’m always on the lookout for anything i can upgrade on lenses, just trying to get the sharpest images possible
The 18-35mm is a crop lens. The 35mm is quite a stellar lens, but if you want to use it for portraits, you'd probably want to use an APS-C camera (because of the otherwise wide FoV).
The 24-70mm is an excellent walkaround lens but not as sharp as a prime. That said, if you want an all-in-one lens for FF, it's hard to beat if image quality is your priority.
All of these lenses are reviewed on our homepage and in the user reviews. I suggest you take a look here:
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