Dew Heater,Lens Defogging Heater Condensation Prevention Lens Warmer, Fast Warming for Universal Camera Lens,Telescopes,Coffee Cup,Baby's Bottle

I don't really use this as much as I anticipated, however it's an absolute game changer when needed. I used to struggle with night photography because the damp air would always fog up my lenses, especially with the heat of the camera. This thing completely handles even the thickest fog.

Love it! Heats up nicely and even keeps the dew off the lens as it should. My one caveat (and this won’t be for everyone ) is the cord is a little short . 6ft ina straight line is good but when I tie it all to the mount for nice cable management it’s too short so I end up using a spare battery to power it and. Lip battery to mount rather than to power bank on ground . For those with shorter mounts or just using it with a small battery it should be perfect

I bought this for my astrophotography. I live in a very cold area and if you plan to go outside at night in freezing temperatures this is a must! It has 2 temperature settings. Just wrap it around your scope and plug USB in.

I used this in Norther Vermont for night photography. Others' lens were fogging from the late night moisture but this lens defogger kept my lens warm enough that it stayed dry and I got the shots.

This dew heater keeps me imaging the sky all night long! Wraps around my telescope or camera lenses and spays on securely with velcro. It can run for several hours on a simple rechargeable 5 volt USB cell such as the RAVPower portable chargers available on Amazon. I never lose a night of imaging from a fogged lens with my Dew Heater running .

I am using this heater for couple of days now, I must say it’s doing the job very well, I can use it in my Canon telephoto lens as well as 80mm refractor telescope. It might not cover the big telescope like I have mine 127mm ED. But for guide scope or dslr lens it’s the perfect choice.

Great little dew heater for small scopes and camera lens. Takes a lot less power than old style dew heater straps.

Bought three of these for two main scopes and a guide scope. Found that they shut down at some point overnight leaving me with soggy lenses. I asked the manufacturer even though they don't document this, but they confirmed that it will time out. Going to replace with another brand.