itzmered wrote in post #14884547
I mis spoke, I tried it again tonight and had the stabilizer off and it still does it. Turned the camera off and back on and set it to manual focus and it was fine. Set it back to AF and it was fine for a couple of shots and then it started doing it again
So apparently it is the AF that is having major problems.
Glad that you ID'ed the problem. Only thing to do is to send it in for repair. Amazingly, I have not done it on my lens because about the time that I start to end it in, it starts to work more or less normally. However, there is one problem that may be elated to my AF issue -- it seems to have a lot more axial CA than previously. This could be caused by an intermediate lens shifting out of position.
Just in case anybody is wondering what is axial CA (sometimes also called longitudinal CA). it is the component of CA that results from focal lengths being different as the wavelength (color) changes. It manifests itself as fuzzy color fringes in images that changes at the distance of focus. With achromatic lenses, it can vary, but mainly it seems to be green beyond the focus distance and magenta when closer than the focus distance. The other component of CA is radial (or sometimes called lateral CA) is the result of the angle of refraction being a function of wavelength. It shows up as color fringes mainly at the periphery of images. It is also known as image size CA because the projected image magnification is a function of wavelength (color).