I have a Aipo digital dry cabinet and always store my gears in it when I am back home. I set my RH at 45, as recommended by most CSer.
However recently, I picked up a copy of "Canon: 20 essential EF lenses for better photography" magazine. In page 62, if you happen to have a copy, it is recommended that the RH be set at below 40......quote "Your EF lenses should always be stored in a dark, cool place away from direct sunlight and with humidity level below 40"
Question: Should I readjust it to 40 or just continue to maintain at 45? I am concerned because have spent quite alot on this hobby and doesn't want to have gears deteriorating because of wrong setting on my dry cabinet.