I count on what you need to occur to happen by yr 2024 after I count on the EF system to stop manufacturing.
My guess is your wished consequence will come out by 2024 when the EF system ceases being produced.
On condition that EF system shall be phased out by mid 20s
I haven’t got a difficulty with Canon selecting to stop manufacturing or cut back the variety of EF lenses they actively promote however they are going to be that can be purchased for a very long time to return. There simply is not any clear motive to cease if Canon remains to be getting cash from them.
Their R&D prices have been amortised to zero (besides possibly the EF400/600mm)
There should not be any manufacturing studying curve for his or her manufacturing value
Elements prices ought to have been optimised by now however provide points may affect this
Canon has and can shock me and others with their selections when it did not appear logical to us however they have not (to my information) given any timeline indications for phasing out or stopping EF manufacturing.
Are you able to level to information for the international locations which have stopped importing EF lenses? They might have already got extra inventory readily available to cowl guarantee and repairs however that might typically be at a person lens degree. EF-S lenses have diminished in vary however are nonetheless important while APS-C DLSRs are being bought and are the one possibility for UWA (tailored) focal vary for the R7/10 immediately.