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Strange issue: Canon EF 70-200mm f/4 L IS USM acts as 85-250mm. How?

Started 8 months ago | Discussions thread
OP Nightly Forum Member • Posts: 68
Update: Response from Canon Technical service
1

UPDATE: I received a call from Canon Technical service: They called me and told me that it might appear as 75 (compared to 24-70mm) and the tele end as 230mm. But it may differ based on distance, and focus breathing. Focusing at a longer distance might lower the difference, focusing to infinity might lower even more but still be visible. So the answers given here mostly matched the answer from technical service.

Thank you all.

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