Hallo everyone once again after a long absence... I have a GX1 body, kit lense, 14mm and 20mm lense. I live in Malaysia (South East Asia) country which is very hot and humid (humidity range of 70RH to 80RH). If anyone has good knowledge of lense protection, please help advise me if I am doing it correctly. Initially, I bought an transparent air-tight container, put in silica gels (it is not banned here) and place a cheap thermohygrometer into the air-tight container to monitor the RH level. When the silica gel was new, it works well, easily a low 40RH, but after awhile it becomes high up to 60RH. And I have to monitor it all the time. Instead of replacing the silica gel, I am using a new method. My camera is always in my bedroom, and every night I switch on the air-condition from about 9pm to 2am (set timer) because weather is so hot here. When I measured the humidity level when air cond is switched on, it is usually low 40 RH. So what I do now is switch on the air-cond till it is quite cold and low humidity with the air tight container opened, then place my gears and themohygrometer into the air-tight container and close it. In the next day, when it is and air-cond is switched off, I see that the temperature in the air-tight container increases as well, but humidity maintains the same. I thought this is much better and cheaper method than using silica gels. I thought it is more reliable as well than silica gels,...when air-cond is working, when we are in the room,...we are guranteed to know that the humidity will be low....whereas with silica gel, we have to look at the color of the gel,...and rely 100% on the themohygrometer readings,...which is risky. Anyway,..I am using a cheap thermohygrometer (about USD 13 purchase),...which I am sure will not be accurate and not totally reliable. But I do often check its functionality by taking it out of the air-cond room to ambient area (vice versa),...as long as I see a logical increase or decrease in RH readings,...then I know it is still functioning,...even though it may not give a very accurate readings. But I have a few questions / concerns, this is where I hope you guys can advise me - 1. Will my lense and camera suffer from condensation, going from cold to hot and cold everyday in my bedroom? - Or it doesn't matter because with air-cond switched off with camera still in the room,....the temperature is dropping very gradually, thus no risk of condensation....? Water Condensation happens only when there is sudden change of temperature of object vs. environmental temperature,...such as taking out the camera from cold room suddenly to outside hot sun? - Having my gears kept in air-tight container,....with the gradual decrease of temperature after air cond is switched off,....there should not be condensation because the humidity is very low inside the container??