i noticed recently that in some of my pictures -the ones with the blue sky at 17mm - i can see some spots ,but not always. i think it depends of my position and the Sun's position.if i zoom in from 17 to 50 ,the spots are getting bigger but -i don't know how to say it- more transparent!!


i looked at the sensor in good light and i can't see a thing , i looked thru the lens in bright light and blue sky but i still can't see anything


my question is; is it the sensor or the lens? can it be fungus inside the lens? if is the sensor, is not supposed to be the same size every time?i mean the spots.


i really don't know what to do or think about this and it drives me crazy


thank you guys for any help