With their new 25-45mm F1.8 Sigma seems to have found a sweet spot here in catering both to motion shooters and still shooters. For a long time shooting motion on a "stills" zoom felt frustrating, with a lot of sacrifices in the interface clearly targeting stills shooters getting in the way.But in the last few years lens designers have landed in a sweet spot, at least partially now that autofocus is just so insanely good on these lenses. That means the focus system is less important, and what we really want is things like a consistent aperture and a controllable aputure ring.The 24-45mm (and the recent 24-70mm) are right in that line, with a focus on great image quality combined with fast autofocus. For a long time you wanted a brand match to get the fasted autofocus (Sony Lens, Sony body, etc.), but Sigma have done a ton to build that speed and integration into their lenses with other manufacturers bodies, especially with Sony. The Sigma and Sony pairing has been very popular.Advantages of 1.8 StopsThat consistent 1.8 is such a gift for filmakers, since remember we can't ever just expose for longer to let in more light. If we're shooting 24fps, 1/24 is the longest we can keep it open. Having that 1.8 in a nice short little zoom is clutch.It's not a massive zoom range like a 24-105mm or even a 24-70mm, but 24 is plenty wide when working in full frame as these lenses are designed to...
Published By: NoFilmSchool - Tuesday, 18 June