Actually, i'm thinking of building a heater for lenses.
I've more or less covered the design of the heater and also the control function.
Most likely the heater will not exceed 45degC, i've been thinking of the circuitry already... just that i only did my basics in electronics... not really that advance yet.
Fogging occur when bringing camera from cold air con room to outdoor which is warm.
Fogging occur when bringing camera cold climate to warm room.
Fogging last from 5mins to 10mins.
So to solve the problem... we should make a heater to prevent fogging.
Help me fill in a few blanks... Anyway just for analysis. I'm only building 1 for myself to play 1st, will consider mass production if got ppl to market...
1) How fast do you wish the heater to remove the fog
a) Instant (high burst)
b) 10 secs
c) 30 secs
d) 60 secs (slow burst)
2) What type of power you prefer to tap on
b) 4x 1.2v rechargable
c) 4x 1.5v alkaline
d) from camera source
3) Would you prefer
a) 1 removable for all lenses (Quick release)
b) semi permanent custom sizes for each lens
c) semi permanent 1 size fits all for each lens