At the end of a wonderful holiday, a not-so-wonderful thing happened. I was shooting a sunrise from the riverbank (salt water) and completely dropped my lens into the water. I immediately rushed to the mens toilets, filled the sink with tap water and gave it a good flushing through with fresh water. I exercised the zoom and focus, while submerged, to get the water thoroughly pumping through the body.
I then drained it and spent a good 30 minutes holding it under the hand blow dryer to get the unit warmed up so the water would evaporate faster. I then stuck it in a bag of rice and placed it on the hot back window of the car for a few days.
Today on inspection, the unit is perfectly dry inside, the zoom and focus actions are still smooth, but the lens is quite badly smeared with some sort of a residue and really needs a good internal cleaning. I haven't tried connecting it to the camera yet to see if it's functional.
I searched youtube for a lens cleaning video for this model but could only find repairs for locked zoom, etc. I can't find any videos on lens access/cleaning.
I'm technically adept (eg. have pulled many MacBook Pros and iPhones apart to repair them) so I have no fear of disassembling this unit to give it a good cleaning.
Before I go any further, should I try another cleaning session with distilled water or isopropyl alcohol, then do the drying routine again?
Can someone please point me in the right direction to a step-by-step on accessing the internal glass on this lens?
Your sage advice is most appreciated!