After trying to take photos of 'perseid showers' i got a lot problems with dew gathering on my camera lens. It is extremally easy to fight with it using my new DIY weapon. Lens warmer! Extremally useful while shooting at night, especially long exposure nightscapes.
Things You will need:
- rubber material
- cutting device
- 2 ohm 5 watt resistors (12 pieces)
- power plug
- power cable
- short wires
- silicon glue
The device connected to the 12V car installation will give 6Watts of energy to Your lens.
You can also use other power supply to the device, the higher voltage, the more power it will produce. I think it is good idea to install extra switch to control the warmth of Your lens depending teperature of the air...
Take a look how to create lens-heater?:
(it should be available in few minutes after posting this thread)
If You have any question post them here. If You like it put apropriate rating to my video.