I'm so impressed with Viltrox lately, their 16mm f/1.8 is really quite the achievement, then their 20mm f/2.8 is so tiny and has become my favourite lens, the 24mm f/1.8 is pretty damn good for the price considering the Sony GM has reliability issues and focus breathing. Now this little gem, I've preordered :)
Looking in a bit, it's actually kinda shocking how few 28mm lenses there are for Sony FE. Lots of 24mm options--budget models from ultra-budget to dark-but-premium build to pro lenses. But for 28 there's Sony's old 28/2, a 28/1.4 from Sigma which is an old rehoused SLR lens, and actually two from Viltrox (this and a 28/1.8). The compactness and low price make this seem pretty fun, but the fact that it can't stop down at all feels like an awkward downside.
You can't adjust the aperture, you can't take pictures of landscapes, you can't take portraits. In strong sunlight, it may even exceed 8,000 shutter speeds. I won't use it even if it's cheap. The f1.8 aperture of the main lens of a flagship phone is about equivalent to a full-frame f10 and can be obtained. For a faster shutter speed, I would choose to use a mobile phone and bring a lens with a large aperture
This is all very true, but same applies to an iPhone 15Pro, Ace Pro, Pocket 3, etc, etc which are equivalent of around f/5.6 for pocket3 and f/6.3 for everything else. This one is f/4.5, so way better and you have the excellent full frame Sony sensor to compensate for poor light. You're looking at around f/3 APS-C performance in such a tiny package - coupled with an A7CII, it's the Fuji X100VI killer basically.
