We have been hearing rumors about Canon 50mm lens replacements for a while now, and if the latest rumors are true, it sounds like we could be seeing a 50mm F/1.8 STM coming soon!


According to the report over on Canon Rumors, the new Canon 50mm F/1.8 STM has leaked (see image above, and specs below), and will be getting announced ‘very soon.’ As you can see from the image, it looks to be very similar in style and design to the STM and IS primes that Canon has been producing lately. Also note what appears to be a fairly small focus ring; this will not be a welcome sight to anyone who has tried to manual focus on the current 50mm /1.8.

Canon 50mm F/1.8 STM Leaked Specs

*Machine Translated*

  • Lens arrangement 5-group, six (Construction: 6 elements in 5 groups)
  • Full-frame compatible
  • Digital optimized coating
  • STM/Stepping motor
  • Full-time manual focus
  • Length: 39.3mm
  • Weight: 160g (1.55″)
  • 49mm filter thread

If the above specs are correct, the new lens is both shorter and heavier than the current Canon 50mm F/1.8 II. You will also note its small 49mm filter thread (vs the 52mm of the current model).

Overall, based on the specs and the leaked image, it looks to be a significant upgrade in terms of build quality. I really would have liked to see a larger manual focus ring – but the lens already looks pretty cramped, so I understand why the ring is so small. It also has what looks to be a metal lens mount; Canon has been known to cheat and use plastic mounts in the past, so it’s nice to see a metal mount on this lens.

What do you think? Is this the Canon 50mm F/1.8 replacement of your dreams, or has Canon screwed it up? Leave a comment below!