The real issue is the ambient air humidity, temperature and light levels. Buy a humidity meter (hygrometer) and see what the prevailing humidity is like.
https://www.instrumentchoice.com.au/Applications/Transport/work-health-safet...yABEgIz3vD_BwE
In my area the humidity sits around 70% most of the time, even in winter. That is high (for lenses) so I bought a small dry cabinet to control the humidity to around 40%.
I prefer a cabinet to dry boxes will silica gel as it is just "set and forget" once you plug it in. With dry boxes you have to keep changing the silica.
The cabinet has a glass door and I keep it next to the balcony glass door so the lenses get plenty of light. I store my lenses with the lens caps OFF so light can get into the lens. Before I did this I had lost a couple of lenses to fungus. Here is an article about dry cabinets. There are lots of different sizes and you can probably find one second hand if cost is an issue.
https://www.camera-warehouse.com.au/news/how-to-protect-your-camera-and-lens...ul-dry-cabinet Lenses should not be stored in their original boxes or camera bags and particularly not in leather. That is just to protect them while in transit or travelling.
They need light and air circulating around them to avoid humidity so, assuming the humidity level is generally below 50%, it is best to keep the on an open shelf with the lens caps removed or if the humidity is higher than 50%, in a dry cabinet.
The problem with wood is that some wood gives off chemicals and also you don't know what the wood has been treated with. I think it is better to use either metal shelves or laminated shelves.
Last edited by Theov39; 05-09-2018 at 01:14 AM.