Canon 90D (Just had a factory check) and a Tamron 18-400 (just returned from a factory check). Canon says they do not guarantee 3rd party lenses.. This lens worked for 4 months perfectly- Now it will not auto focus at any thing over 200mm. HOWEVER>>> It will auto focus in Live vieww ???? Went round and round lwith Canon repairs- still does not work ? Any ideas ??
Thanks!
Ronald
Thanks!
Ronald