Canon G3X Flash
Canon G3X Flash
Built-in Flash Test Results
Coverage and Range
A weak flash, with very uneven coverage at wide angle. Above average exposure compensation required.
Coverage. Flash coverage was quite uneven and narrow at wide angle (not unusual, though, especially for a 24mm equivalent lens). We no longer test this at full telephoto, as wide angle is invariably the worst case.
|Normal Flash, ISO 200 (+1.0 EV)||Slow-sync Flash, ISO 200 (+1.0 EV)|
Exposure. Here with our standard Indoor Portrait scene at ISO 200, the G3X's flash struggled, producing a slightly dim image even with +1.0 EV flash exposure compensation (most cameras need about +0.7 EV for this shot). This is partly because maximum aperture at this focal length (~85mm eq.) is f/5, which is dimmer than the f/4 aperture that we normally use when available. The camera selected 1/60 second shutter speed, which is good as it helps avoid subject motion blur. Slow-sync flash mode produced a brighter, more evenly lit image using the same +1.0 EV flash exposure compensation, with the camera selecting a relatively fast (for slow-sync mode) 1/30 second shutter speed.
|Manufacturer-Specified Flash Range|
ISO 1000, 1/80s, f/5.6
Manufacturer Specified Flash Test. Canon rates the PowerShot G3X's flash range at 6.8 meters / 22 feet at wide angle or 3.1m / 10 ft. at telephoto when using using Auto ISO and maximum aperture. In the test shot above, the PowerShot G3X's flash performed to Canon's specifications, producing a well-exposed flash target image wide-open at full telephoto, with the camera boosting ISO to 1000.
Our standard test method for flash range uses either a fixed setting of ISO 200 when a Guide Number is given, or the manufacturer-specified camera settings, at the range the company claims for the camera (at Auto ISO if so specified), to assess the validity of the specific claims.