Hotshoe flash. They’re all the same right? Well not really. There are so many weird quirks with each brand, and sometimes it’s not obvious that your brand doesn’t work the same way as another brand. Physical differences are easy enough to spot if you know to look, but technical anomalies – they’re the fun part.
Checking a lens when buying is both easy and essential. It doesn’t matter whether you’re buying new or used, there is no reason to neglect these simple checks.