I have just purchased an unused kit lens, 18-55mm to replace mine which I gave to my son. In manual and shutter priority its fine, but in aperture priority, when I half press of the shutter, when my finger comes off the shutter, the aperture blades, chatters back into the wide open position, you even see the brightness flickering through the viewfinder. This lens is made in Phillipnes lens as opposed to the made in japan of my previous model, the firmware is 3.21, the latest I believe. it also does the same on my 23mm 1.4 and10-14
Has anyone else experienced the problem or is the camera (x-pro2) or the lens?
