The Canon Powershot ELPH 100 HS (IXUS 115 HS in Europe and Oceania, and sometimes known as the IXUS 117) was released in March 2011.


CHDK Beta versions for the Powershot ELPH 100 (Ixus 115 / Ixus 117) with firmware versions 1.00c, 1.01a, 1.01b and 1.01c are available from the CHDK Autobuild Server

See also the specialities section


Technical Data[]

→ Camera Specifications: [1] Canon AUS

  • DIGIC IV image processor TruCapture
  • DryOS operating system
  • 12.1 megapixel High Sensitivity CMOS
  • Lens: 28-112mm (35mm equiv), 4x optical zoom, F2.8-5.9
  • Face Detection / 9-point AiAF
  • Image stabilization (lens shift type)
  • Display: 3.0 inch LCD, 230,000 pixels
  • ISO: 100-3200
  • Built-in flash
  • Video: Yes 1920 x 1080 @ 24fps, 1280 x 720 @ 30fps, 640 x 480 @ 30fps, 640 x 480 @ 120 fps, 320 x 240 @ 30fps, 320 x240 @ 240 fps
  • Video format: MOV (H.264 + Linear PCM (Mono))
  • HDMI mini connector
  • Storage: SD, SDHC, SDXC, MMC, MMCplus, HC MMCplus
  • Power: Rechargable Li-ion Battery NB-4L
  • Weight (without battery): 121g
  • Dimensions: 93.1 x 55.9 x 19.9 mm
  • Release Date: March 2011

Firmware info[]

Find your Camera Version by Using Camera Version Software on windows as seen here:

CHDK Specialties[]

This section describes special CHDK-related things...

  • <Alt> mode is activated using the Playback button.
  • Using the CHDK menu, <ALT> mode activation can be changed to the Video button or a combination of the FUNC/SET + ZOOM IN buttons.


Notes on SD Override for the ELPH100[]

SD overrides will only work when the camera is in AFL mode ( auto focus lock ). To activate AFL :

  1. The camera must be in Program mode rather than AUTO (slide switch on top of camera).
  1. You must be in normal Canon shooting mode (not CHDK <ALT> mode)
  1. Press the "left/flower" button after first "half pressing & holding" the shutter release button.

If you complete the above 3 steps correctly, you should see the Canon software put the letters AFL on the upper right edge of the LCD.

For Developers[]

General info[]

LED addresses[]

0xC0220130   green light on the back side

Firmware dumps[]


Download location for firmware dumps:
P&S firmware dumps mirror

Porting process & links[]