What are the 15 Oldest Canon Lenses? Which Should be Replaced?

It has been a while since we took a look at the oldest Canon lens list and I was wondering what that list was looking like today. Since I was wondering, I thought perhaps some of you might also want to see the list. So, here it is:

Lens Model		Year
1	Canon EF 50mm f/2.5 Macro Lens	1987
2	Canon EF 100mm f/2 USM Lens	1991
3	Canon TS-E 45mm f/2.8 Tilt-Shift Lens	1991
4	Canon TS-E 90mm f/2.8 Tilt-Shift Lens	1991
5	Canon EF 20mm f/2.8 USM Lens	1992
6	Canon EF 85mm f/1.8 USM Lens	1992
7	Canon EF 50mm f/1.4 USM Lens	1993
8	Canon EF 400mm f/5.6L USM Lens	1993
9	Canon EF 70-200mm f/2.8L USM Lens	1995
10	Canon EF 28mm f/1.8 USM Lens	1995
11	Canon EF 180mm f/3.5L USM Macro Lens	1996
12	Canon EF 135mm f/2L USM Lens	1996
13	Canon EF 200mm f/2.8L II USM Lens	1996
14	Canon EF 300mm f/4L IS USM Lens	1997
15	Canon EF 28-135mm f/3.5-5.6 IS USM Lens	1998

At 30 years of age, the 50mm macro is older than many in this audience! However, I'm guessing that there is another lens in this list that you would more-prefer to see an update of.

We don’t have any specific inside information on what’s coming down Canon’s development pipeline, but I'm guessing the prospect of an updated EF 50mm f/1.4, 85mm f/1.8, or 135mm f/2 might seem especially enticing to you. Or, perhaps adding IS to the 400mm f/5.6L or 180mm f/3.5L Macro (or any of the other non-IS lenses) sounds appealing to you.

Which lens updates would you most like to see hit the market in the not-so-distant future?

Which of these lenses no longer has a purpose and should simply be discontinued without a replacement?