Canon is reportedly slowly discontinuing popular DSLR lenses according to this list maintained by CanonRumors:
- Announced: June 8, 2012
- Discontinued: February 2021
Canon EF-S 60mm f/2.8 Macro USM
- Announced: February 15, 2005
- Discontinued: February 2021
Canon EF 70-200mm f/4L IS USM II
- Announced: June 6, 2018
- Discontinued: March 2021
- Announced: February 21, 2006
- Discontinued: March 2021
- Announced: January 24, 2008
- Discontinued: February 2021
Here is an updated list of discontinued Canon DSLR lenses from CanonRumors:
Discontinued EF & EF-S Lenses:
- Canon EF-S 10-22mm f/3.5-4.5 USM
- Canon EF 14mm f/2.8L USM
- Canon EF-S 15-85mm f/3.5-5.6 IS USM
- Canon EF 24-70mm f/4L IS USM Macro
- Canon EF-S 35mm f/2.8 IS STM Macro
- Canon EF-S 55-250mm f/3.5-5.6 IS STM
- Canon EF 70-300mm f/4-5.6L IS USM
- Canon EF 135mm f/2L USM
- Canon EF 180mm f/3.5L USM Macro
Lenses to be discontinued sometime in 2021:
- Canon EF 35mm f/2 IS USM
- Canon EF 300mm f/2.8L IS USM II
- Canon EF 400mm f/4 DO IS USM II
- Canon EF 500mm f/4L IS USM II