Dust, we all hate them. I've got one which appears at the top left hand corner of my photos. So far, it's eluded me so I'm here to ask for help in tracking it down
1) It doesn't appear on shots taken with apertures less than f16. At f22, it's as clear as day.
2) Focal range doesn't matter. At f16 and above, it is clearly visible when you focus to infinity and it is also very clear when you focus as near as possible.
3) It isn't on the lense as it happens with all my lenses at the same spot.
I'm struggling to figure out where it could be
. I hope it's not on the sensor or the low pass filter but if it is, why is it not visible/blurry at low f-numbers?
It's driving me insane.