If you thought that Hasselblad's medium format cameras were hardly well suited to street photography, you might have to think again. The XCD 4/28P is a super-slim, super-light lens measuring just 43.5mm in length and with a weight of just 245g, despite its metal construction. It's the smallest and lightest lens in the Hasselblad XCD range.
Not only that, while the original contrast-AF X1D was a little leisurely in its focusing (uh, to say the least), the X2D with its phase-detect AF is a very different beast. And, to be fair, Hasselblad probably has more in mind than 'grabbed' street shots and is including architecture, nature (min focus distance 0.22m), travel and landscapes amongst this lens's strengths.
It's part of the company's 'P' range – a set of lenses designed to be ultra-thin, light and portable for everyday photographic use. Hasselblad could also have mentioned 'affordable', because although this lens is not cheap at $1,679 (around £1,320 / AU$2,595), it's practically a budget lens by Hasselblad standards and bang in the middle of the price range even for premium full-frame lenses, never mind medium format.