I just couldn't resist it. Although I actually bought the A7r for my manual lenses I was rather disappointed by the wide angle lenses on it. I have a few 35mm lenses in various mounts but really non of them perform well on the A7r. There was nothing to do but purchase the FE 35 f2.8 ZA lens since it's actually made for the camera and the dreaded purple cast wouldn't show it's ugly head. All I can say is this lens performs extremely well on the A7r and the amount of detail the sensor gives is truly remarkable. I'm also a fan of the zebra stripes available for proper exposure purposes and I've finally figured this out. For my tastes, I adjust the exposure so that the zebra stripes are just visible and the whites will not be overexposed. I didn't think it possible to get this much dynamic range out of a sensor, but it is, in my mind, the best sensor on the market today. If you're sitting on the fence trying to determine if this lens is worth it, buy it, it's worth every penny.