He swapped it for me. (He knows how to make the customer who is probably going to come buy another lens soon happy). He said that camera bodies and lenses have a "specification" level for acceptable, just like most other consumer goods. If a lens is off by the far end of acceptable specifications, and a camera body is off the other direction to the far end of specifications, they won't always play nice together (yes, he said that). He even said that sometimes people check several lenses on their cameras before they buy one to find the one that "works best". Occasionally, a new camera body won't work well (or at all) with those hand picked lenses because the original camera was at the far end of specification tolerance and the lenses were picked to go with that camera. (doesn't happen often but does happen). He thinks I just happened to get the two opposite far ends of the specification limits(or the lens was possibly out of tolerance), and probably won't have any trouble if I choose to buy other lenses, but he'd recommend coming to him and testing them on my camera before buying.

Stick with that shop, the guy has read lensrentals article and/or knows his stuff, and that is hard to find in a camera salesman these days.





