sebjmatthews
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Any optics which weren't replaced in the line by 1999* has some degree of correction available; exactly which corrections depend on the age and/or complexity of the optic.
Lenses whose optics were not being used by 1999 do not have any corrections available.
Note that it depends on the optics, not a lens model name; as MintMar correctly guessed, the first EF 50mm f/1.8 has corrections because the optics themselves were still in production after 1999. (In fact that optic didn't get replaced until 2015.)
There are a small handful of exceptions, due to certain older lenses being kept in regular use by a few agencies with enough buying power to force Canon to keep supporting them. But overall, if your optics were obsolete by 1999, corrections won't have been made.
*It's most likely 1999, but the cut-off point might have been very late 1998. It's hard to tell precisely because Canon don't keep track of these things very well and most information is from old, low-resolution scans of Japanese magazines.
AmbientMike wrote:
A lot of canon lenses are supported in DPP. You'd think they could put the corrections in the body.
Some corrections are stored in the body, others are stored in the lens. Lenses made prior to 2010 don't carry their own corrections, so correction profiles must be loaded into the camera; most bodies made after 2015 come with every 'legacy' profile already loaded in.
If your camera body is missing a profile, you can connect it to a desktop computer and load in profiles via EOS Utility and/or DPP (which one depends on camera model). Most bodies made from 2006-onwards have the capacity to store every correction, though in some cases this can slow down the camera's jpg and video processing very slightly, so it's best to only load in the profiles you'll actually use.
Since 2010, Canon first-party lenses have stored correction profile information within themselves and transmit them to the body during shooting, so nothing needs to be loaded into the body.
Since approximately 2018, Sigma EF-mount lenses also carry their own correction profiles.
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