I saw someone talking about the Sony A7R5 and very impressed that they had a built in timer for bulb mode.

So, I checked my R5 and M6 II. Yep.

Canon R5: switch to Bulb mode, Photo page 6. Bulb timer. As recently as this summer I was timing it with my iPhone and depressing the remote trigger.

Canon M6 II: In the shutter speed, go past 30s is bulb mode, then Menu Photo Page 6 again.

Nice feature. I'll use this at some point.

So many things are built in anymore...focus bracketing, exposure stacking, interval timer, HDR....and a bulb timer.

I need to play more.