I have a digital cabi, with digital RH setting. What i found out was:
I set my cabi to RH 45%. When the cabi shows that it reached 45%, my another xtra analog hygrometer which is inside show RH 55%
I changed the analog hygrometer position to another tray in my cabi, and it will stay at RH 65& for the rest of the time.
This experiment shows that the RH in cabi is not fixed throughout? And it clearly shows digital and analog hygrometers are not 100% accurate.
The problem is this, most of us know that a dry box/cabi is best to keep at 40-50% for our cameras n lenses, but, how many of us know that the hygrometer of ur box/cabi is accurate? For those whose box/cabi is actually higher than RH50%, and their hygrometer is showing 45%, think that their camera and lenses are safe from fungus?
At this point of time, I am sure many of us bought what is call "something to protect our equipment", but actually its not protecting it.
Solution? Get a accurate hygrometer. Cost some more $$. But, will anyone do it?
Anyone has a cheaper method to check if the hygrometer on the box/cabi is accurate?