|Upon arrival of a Canon PowerShot SX10 IS test sample, it is tested in our DIWA Lab. The technical data of the rigorous tests are processed and translated into understandable data. Inside the lab, testing takes place in standardized circumstances. An environment in which cameras, both compact and system concepts can be compared without a problem. Besides that, the Canon SX10 IS camera is extensively used in practice and evaluated as for operation and shooting in practice. This combination of lab tests and the testing in practice, results in a final conclusion that is carefully reviewed.|
|Color reproduction & White balance measurements
The Canon PowerShot SX10 IS camera has a fine, consistent color reproduction. The colors are somewhat over saturated, however, in a pleasant way. The colors of the Canon SX10 IS camera as for ISO range 100 to 1600, deviate slightly from the reproduction of the Gretag Macbeth Color Checker, although the level stays quite consistent. As for white balance, the Canon also shows a fine result. The auto balance is somewhat on the warm side, however, not over the top and probably quite acceptable for the majority of the users. In general, you can leave the white balance in the auto mode, although in the case of an overflow of incandescent light, selecting a white balance manually will ensure the optimum balance.
Actual sensitivity of the sensor
Striking is the measurement result of the actual sensitivity of the sensor compared to the specifications. Usually, we find a deviation of 20-25% and after measurements in the DIWA Lab, we find almost equal results. With the exception of 80 ISO where the true value is 71 ISO, the range from 100 up to and including 800 ISO is almost equal to the claimed specifications and only at ISO 1600, 6% less sensitivity is found. We frequently find deviating values that suggest the manufacturer has to deviate from the claimed specifications in order to keep the signal/noise ratio under control. When it comes to the Canon PowerShot SX10 IS, however, it seems this is not the case at all.
Dynamic range of the Canon SX10 IS
The dynamic range is also in order. An excellent to fine result is measured over the range from 80 – 800 ISO. The dynamic range adds to the image quality in situations with vast contrasts. It’s those pictures with a lot of contrast, shadow and light areas, that result in loss of detail. Black shadow areas that only show a black blob or white-washed areas that should really show details. The Canon SX10 IS knows how to deal with this as long as you stay within the ISO 800 range.
|Canon PowerShot SX10 IS lens
The 20x optical zoom lens of the Canon PowerShot SX10 IS features an aperture range of f/2.8-f8.0 with a small number of apertures in between. One of the items that is measured in the DIWA Lab concerning the lens, is the centre sharpness and that of the edges around it. The 28mm wide angle does suffer from some visible blur of the edges when shooting in f/2.8. Setting the aperture to f/4.0 will obtain an excellent result. The edges of telephoto range do not perform that well. At full opening, minor blur is visible and at maximum aperture (f/8.0) blur is visible. In general however, the zoom lens performs well when it comes to sharpness and although some concessions have to be made, sharpness is simply fine.
Vignetting of the Canon lens
As expected, some visible distortion appears in wide angle range. And although within limits, it will show more on some pictures than on others. In particular those pictures that have a lot of horizontal or vertical lines in the main role. The other focal points perform excellently when it comes to distortion; you won’t encounter any problems keeping the lines straight. The results for measuring vignetting are excellent for the Canon SX10 IS zoom lens. In fact no visible vignetting other than at full opening, and in fact hardly measurable in the lab, an excellent score.
Chromatic aberration clearly visible
The measurements of the presence of chromatic aberration are something else. Canon is wide of the mark here. Almost the entire range suffers from visible chromatic aberration and at 560mm telephoto range, it’s at its worst. You’d expect Canon to be able to eliminate this effect by corrections inside the camera through the software. Unfortunately, this is not the case and the lens performs simply poorly when it comes to chromatic aberration.