Thanks alot for your tips.:thumbsup: Cos I remembered afew years back when I went NSC to collect my flash/speedlite back, I asked what causes the flash to failed (can't really remember what was chgd) & was advise not advisable to keep in dry-cabi :dunno:
Regarding flashlights/speedlights not having optics..i kind of disagree, because there is a piece of glass inside most flash for measuring distance between subject and flash..hence i always keep my flash in dry-cabi..
So far my flashes still working, except for one SB22 forget to take out battery and the contact points oxidize due to leakage..the longest working flash is the National flash left by my father almost 25 yrs liao, still firing well..
I think it's also because you use your gear often that's why they last longer.
In S'pore, the humid weather is a problem, and that may cause corrosion of the contacts in- and outside the flashgun. In any case, I think it's good practice to stick everything in the dri cab, set to medium RH, then occasionally open it to "air" the cab and take your gear out to use. Fire off a few shots with flash also good.