Wet E-M1 II + HLD-9 = body corrosion

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Wet E-M1 II + HLD-9 = body corrosion
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During a recent trip where we spent several consecutive days walking long stretches of beach - with a lot of salt spray - I would give my camera a very light water rinse and immediate wipe down each evening to remove salt from the camera, HLD and the 12-100mm F4.

But I neglected to remove the HLD and dry the camera||HLD interfaces after each rinse.

After removing the HLD the other day - to swap the body battery - I noticed a white powdery substance on the HLD’s stainless steel locating pin and around the locating hole on the base of the E-M1II. I cleaned both using a toothbrush with neat isopropyl alcohol (my usual method for cleaning corrosion from battery terminals when a battery has leaked) and I was disappointed to find some minor paint loss and pitting of the metal around the edge of the locating hole in the camera body.

Lessons learned:

if the camera+HLD gets wet remove the HLD and dry the pin and hole areas thoroughly. The galvanic potential of the dissimilar metals is enough to cause corrosion and the camera’s magnesium alloy body is the anode in this case.

From now on I’ll be checking my E-M1 II and III for signs of corrosion (both have HLD-9s attached) each time I do a body battery swap.

FYI, and hopefully somebody can learn from my mistake.

Peter

EDIT:

perhaps a Coatings Engineer out there can recommend a paint or treatment for the body corrosion

Peter

Olympus E-M1
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