I'm slightly inspired by the picture in this question involving candle flames.
I'm interested in taking similar pictures of candle flames and fire more generally, but I worry that it might cause damage to either the optics or the sensor. Is this a legitimate worry?
In case the answer would vary based on the quality of my equipment, I currently have a Canon 550D, the standard 18-55mm kit lens and a Tamron 70-300mm (all fairly low-level stuff, I know).