A small drawback is the rather low luminous efficiency: f4.0 - 5.6 hew a not just from the base. On the other hand: these focal lengths, at least for me, more outdoors and in daylight asked so that this shortcoming is not soo serious for me and does not lead to devaluation.
Conclusion: just under 140, - EUR a lens of this class is in my opinion is for such an excellent price-performance ratio that, as far as I can see that is not nearly achieved by comparable brand manufacturers.