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R5 Won't Allow Dependable Focus with Older Model 70-200 f2.8

johndd
Contributor

After I purchased the R5, I immediately had focusing problems with my long lens. I have an Canon adapter to use my older lenses. I was told I needed to upgrade my R5 software, and after I managed that, the focusing issue disappeared. After several months of not needing/using the long lens, I now have the same issue with focusing. Any ideas? 

1 REPLY 1

deebatman316
Elite
Elite

Which model EF 70-200mm F/2.8L USM lens do you have. Canon has released 3 IS models and 1 non-IS model. So please provide the full name of the lens you own.


-Demetrius

Current Gear: EOS 5D Mark IV, EF F/2.8 Trinity, EF 50mm F/1.8 STM, EF 85mm F/1.8 USM, 470EX-AI & 600EX II-RT

Retired Gear: EOS 40D
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