lily composite

Gilding the Lily

This is a composite of a colour and infrared image. The camera was mounted on a tripod, then various bracketed exposures of the infrared image were taken, followed by a colour image in the same position. I chose a well exposed infrared image and combined it in Gimp with the colour image using overlay.

Because of the long exposures in infrared, I’m getting some weird noise artifacts and occasionally dead pixels. I thing the Ixus does a lot of processing internally when it takes long exposures to reduce the amount of noise, and it’s for this reason that I’d like to experiment using RAW format, which my camera doesn’t do.