I dont know what humidity percentage is best for sony A7SII, i checked many websites and it has different opinion.. so i got confuse 

50%

50%

are you sure about that? isn't that too high? i read an articles, and it said that if its too high the fungus can still attack your camera, because the 50% humidity is the same as the outside the drybox..

are you sure about that? isn't that too high? i read an articles, and

it said that if its too high the fungus can still attack your camera,

because the 50% humidity is the same as the outside the drybox..

   

Not sure of an exact figure for storage, but 50% does seem 

more like an ideal operating environment rather than an ideal 

storage environment. Problem is that in storage the air is not 

circulating, so humidity thaz OK operationally could condense 

is the storage box is someplace that turns cold ... acoarst any 

percent humidity must be measured at a narrow temperature 

range or it has no meaning. 

   

Why do you wanna know a somewhat exact humidity ? What 

harm come to the camera if the storage is simply as dry as is 

possible ? With a violin, too dry cracks the wood and or finish,  

while too damp grows fungus. So a specified humidity is good 

to know. But with the camera, I'd think "the dryer the better". 

Is there some harm to cameras from too dry a storage box ? 

Not sure of an exact figure for storage, but 50% does seem 

more like an ideal operating environment rather than an ideal 

storage environment. Problem is that in storage the air is not 

circulating, so humidity thaz OK operationally could condense 

is the storage box is someplace that turns cold ... acoarst any 

percent humidity must be measured at a narrow temperature 

range or it has no meaning. 

   

Why do you wanna know a somewhat exact humidity ? What 

harm come to the camera if the storage is simply as dry as is 

possible ? With a violin, too dry cracks the wood and or finish,  

while too damp grows fungus. So a specified humidity is good 

to know. But with the camera, I'd think "the dryer the better". 

Is there some harm to cameras from too dry a storage box ? 

because i want to keep my camera as safe as possible, im afraid if something happens to my camera.. if the drybox is too dry the oil inside the moving parts will lubricated so its gonna be rugged everytime you use the camera, i read it from here http://www.clubsnap.com/forums/showthread.php?t=234269

I'd say 40-50 is optimal , I set mine 45 for few years. no problems at all.

 

You don't want it too dry. (say lower than 40)

Or you are risking the rubber part in your camera/lens to crack.