02-01-2021 08:56 PM
Seeking guidance on a lens warmer for a canon EF 24mm f2.8 lens. The strip width would need to be approx 20mm and length about 22cm. Does such a thing exist, or can the community offer innovative solutions?
Warm Regards - James
02-02-2021 05:22 AM
Probably best to seek advice in one the astrophotography forums. I know my son-in-law does astro and makes his own using old toaster elements with some sort of insulation that run off a 12 Volt supply but I don't have construction details.
02-02-2021 11:19 AM
This is called a "dew preventer". You should find easy instructions on how to make one. But the idea is very simple. Get six 25-ohm resistors. Wire them in series. They will produce 1 watt of heat when connected to a 12 volt power source. Now just fix them around the front of your lens. We used to do this a lot and it works well.