Kanye West I'mma Let You Pose For MY Pics ... That Sweatshirt is Dope

Kanye West doesn't fraternize with photogs ... but when one of the guys snapping his pics is wearing a dope sweatshirt -- Yeezus changes his tune. 

Mr. West was catching a cab Wednesday in New York City when one of the photogs caught Kanye's eye ... his fashion eye.

Kanye put his trip on pause and snapped a few pics of the sweatshirt.

But maybe the most puzzling thing ... why is Kanye taking a Yellow Cab?