A few years ago this lens used to get as cheap as $250 a couple times a year; haven't seen it below $450 in a while though. Not a bad price!
While the Simga 45 has some focusing reliability issues, it is absolutely tiny and has a ton of character. For daytime walking around, it's my favorite.
AFAIK there is only one optical/mechanical version of this lens although there has apparently been a recent slight change in external dimensions and weight (+ 20 grams). A silver edition has been released but for L mount only. The naming has changed recently as Sigma has dropped the DG nomenclature. At this time, both are currently available for purchase. The latest firmware for Sony is version 6 from 11/2024. It is a lovely and versatile lens.
The product name, as well as the product code are changed due to the renewal. For details, please refer to the information in the [Lineup] section. (Then) SIGMA 45mm F2.8 DG DN | Contemporary (Now) Sigma 45mm F2.8 DG | Contemporary
Sigma 45mm F2.8 DG | Contemporary now supports the Magnetic Metal Lens Cap, making all nine I series lenses to become fully compatible with the dedicated lens cap.
There are no changes to the optical design or product edition number. Photographers and filmmakers can continue to enjoy the same level of high rendering performance as before.
