I have recently acquired the great little XC 15-45 lens, and despite the annoying retract when you want to review photos, this is a sharp lightweight gem. I have encountered a strange issue though which initially perplexed me while using my X-T2. When shooting at certain shutter speeds, this lens will produce eerie ghosting effects, almost like a double image. It is as though the lens IS shifts the elements slightly to the left with each shot. I have been a photographer for many years and have not encountered anything like this on modern system cameras. I have tried both IS modes but to no effect, and a variety of focal lengths and apertures which have no impact. The problem seems to be associated within certain shutter speeds between 1/10 and 1/160 sec. Under or above those speeds the photos are fine. I have attached some photos to show this most odd problem. Now, through experimentation I have found two cures for this issue: the first option is to simply disable the IS mode, and the second is to leave the IS mode enabled but to use electronic curtain on the shutter option which for me is preferable. Both of these set-ups create a solution and resulting photos are normal and sharp right down to hand-held speeds of half a second or so. All firmware for lens and body is latest and up-to-date. If anyone has encountered this bizarre problem with this lens and camera combination I would like to hear of your thoughts.
Photo below: 1/20 sec, f/5.6, 45mm, ISO 200, IS: Continuous, M Shutter. <> Middle photo: 1/52 sec, f/5.6 15mm, ISO 200, IS: Continuous, M Shutter. <> Bottom photo: 1/20 sec, f/5.6, 15mm, ISO 200, IS: Continuous, E Shutter
