« on: September 30, 2014, 12:44:46 PM »
Does anyone ever use that option in the editor to 'update' the lens data (via "add or remove lens data" dialog)? What's the benefit if you do? I find it downloads a lot of data and I don't see any difference - the Canon lenses are suitably correctly even if I don't download anything.
I have updated the lens data a few times. It took a long time before 400/5.6L USM appeared for the first time in that list.
You don't have to download the data for all lenses Canon released, but if you want to apply the DLO corrections you will have to do so manually.
Interesting, I did register those lenses in my collection with my Canon bodies via EOS utility, so I wonder if this data is now embedded in the raw files?