12-06-2011, 10:49 AM
Hi, I´ve just got my new 70-200 VR II and put it to some "regular" testing to check centering quality, BF/FF etc. What I can say my 70-200 copy is supersharp, very well centered and focuses perfectly. However, what disturbs me is a kind of mini crack or spot inside the lens close to the optical axis - please see the attachment. Well, in reality the spot is even not that big as shown in the pic (it is blurry on the pic because I cant get my compact cam to focus properly in the macro mode) but it definitely doesn´t look like a common dust particle. In all probability, it is a lens defect.
Do you think it may somewhat influence the optical performance of the lens when it is not directly in the optical axis or am I doing too much ado about nothing...?! That means (another Shakespeare quote) return the lens for a new copy or not return the lens...? I´m saying again the spot is even smaller in reality (with sharp edges) than being shown in the pic... Moreover, it is normally not that visible, I put the light source in a very specific angle to make it as visible as possible... But it is there...
Do you think it may somewhat influence the optical performance of the lens when it is not directly in the optical axis or am I doing too much ado about nothing...?! That means (another Shakespeare quote) return the lens for a new copy or not return the lens...? I´m saying again the spot is even smaller in reality (with sharp edges) than being shown in the pic... Moreover, it is normally not that visible, I put the light source in a very specific angle to make it as visible as possible... But it is there...