Purchased new on May 30, 2025. I'm selling it because I haven't been using it lately. Regarding the size information above, I was unable to select "RF-S" (for mirrorless cameras), so "EF-M mount" is listed. However, it is actually an "RF-S mount," so please be aware of this. Product Name: CANON RF-S7.8mm F4 STM DUAL Lens Type: RF-S (Mount for Canon's APS-C sensor mirrorless cameras) Compatible Camera Models: R7 and R50V I am a company employee, so please understand that my replies will be late in the evening.