That 00-2.5M button on 70-200 VR1
Can you tell me whether this button option being selected has more of an effect at the 200mm than the 70 mm mark .I have recent photos where it may have contributed to a depth of field problem.
If it wouldnt have effected DoF what does it do at the 200mm end compared to the 70mm......I think it must do something thats a possible disadvantage.
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