BRNO Dehumidifying Caps Helps Keep Sharpness In and Fungus Out


Fungus is one of the banes of a camera lens’ existence. In humid environments, nasty things can begin to happen if some fungus spore-laden dust particles make their way into your lens. To prevent fungus from growing inside a lens, photographers often silica gel packets to control the amount of moisture in and around their glass.

For a fancier solution to this problem beyond simply stuffing desiccant packets inside your camera bag, check out BRNO’s dri+Cap System. It’s a set of lens and body caps that are designed to keep your lens elements nice and fungus free.


The specially designed caps, available for both Nikon and Canon mounts, come pre-loaded with packets of silica gel. They feature rubber o-rings that prevent outside air from entering through the lens in the mounting area.


Using the cap system helps maintain your gear at what the company calls the “optimum relative humidity”, which is reportedly 35% to 45%. It also allows you to transition between drastically different temperatures and environments with peace of mind, doing away with the need to temperature match (which can often take some time to do).


To remind you to change the packets every so often, the gels actually change color when they need to be replaced. Orange gels indicate freshness, while green ones indicate that a swap is in order.

Each body and lens cap pair costs $45 over on B&H for Canon and Nikon shooters. 8 packs of replacement gels cost $7.

(via PopPhoto via Nikon Rumors)

  • TrollDaddy

    A little pricey. But I guess its better to pay 45 dollars than replacing your glass.

  • 11

    they photoshopped “canon” out and left “Nikon” inplace???

  • iankyddmiller

    A good idea. I use a a 1 kilo bag of white rice open in my bags when storing gear, sorts of the moisture a treat just have to remember to remove it before moving the bags. LOL

  • TheOven

    You should be able to reactivate the silica (if it is silica) in the packet rather than having to repurchase new ones, by heating them.

  • Kay O. Sweaver

    So you can replace dessicant packs in your bag by putting dessicant packs into your caps? Am I being pumped?

  • Leonardo Abreu

    It’s a great idea. I hope it comes popular.

  • Maire

    White rice? I’m interested, tell me more.

  • Eziz

    I store my stuff in a plastic box with a 10$ re-usable silica pack. This one is pricy but convenient I guess.

  • humunkulus2111

    removing the canon logo.. but not the EOS 1 sign.. clever idea.

  • uhdshdh

    rice.. you know what rice is genius?

  • Phrog12764151

    Sooo, lemmie get this straight. We are expected to attach a porous bag of crystals, which by their nature will create powder when they physically contact each other, to the front of our camera’s body. Me thinks, NOT.

  • Guest

    Just ordinary white rice. It acts in the same way as a desiccant and keep the humidity down (I live in Cambodia so I know humidity) and even better after it is used you can cook it and eat it so no waste, a good green product.

  • Ralph Hightower

    Is it available for Canon FD mounts?

  • Maire

    Yes I do, apple store employee. I’m inquiring regarding the method Ian uses.

  • slvrscoobie

    I know those packets cause quite a bit of dust, how are we keeping that off our rear elements and sensors again?

  • hatersgonnahate

    sooooooo, lemmie get this straight. you’re afraid of the slight chance of dust from a silica gel pack vs fungus that will literally eat the coating off of a lens? me thinks your being an idiot

  • Studentonabudget

    Could I just stick a bag of dessicant or rice with double-sided tape on the inside of the cap?

  • Phrog12764151

    Hummm, dust or fungus? Fungus or dust? Neither. I prefer to keep both out of the inside of my camera body. Especially really small ones. Especially notoriously abrasive ones like silica.The camera body can be protected other ways with out direct content. I also prefer keep people that choose to bully folks with tags or names out of my realm.

  • Michael Andrew Broughton

    35-45% relative humidity does not mean you can do away with temperature matching! do they not know what the “relative” in “relative humidity” means?