New camera: Canon SX240

The new 660nm modified Canon SX240 (replacement) camera has arrived, from the ever helpful Andy at Infraready, to replace the broken Powershot n as my main infrared camera dangling from a kite.

Canon SX240

Getting CHDK on to it was very easy. I used the ACID tool to find the firmware version and just loaded the specific CHDK build files (stable 1.4.1) on to a formatted SD card.

The Indestructibles site lists the steps perfectly: http://www.instructables.com/id/How-To-Install-CHDK/

CHDK Download page: http://chdk.wikia.com/wiki/Downloads

CHDK status screen

 

CHDK Intervalometer Script screen

Interval shooting mode

One of the first things I noticed is that the SX240, unlike the Powershot n, will reload CHDK after images have been captured – which is great and so much more convenient than having to use a freshly copied SD card each time.

There is also a note on the Wiki that RAW capture does not work correctly when in Auto mode; not an issue, however, as my intention is to shoot purely in Shutter or Manual mode, when flying and Aperture mode when using normally.

The SX240 also has two good features, over the Powershot n:

  1. Custom white-balance – although capturing RAW with CHDK, this helps with the JPEG files when not using CHDK.
  2. Shutter Priority (“Tv“) – when swinging off a kite line, having a fixed shutter of 1/500 or 1/1000th is very helpful.

Will post the first sample images shortly.