« on: November 27, 2011, 05:06:02 PM »
First off, did you shoot in JPEG or RAW and did you have high ISO noise reduction on or off?. The first image is taken at ISO 1600, which is pretty high for the 500D, the noise doesn't look that bad for such an ISO, so I suspect there has been some noise reduction, which will soften the image. Also, there appears to be some motion blur if you look closely and I would say that is partly down to camera movement, as the pews have a double image. Certainly, the shutter speed is marginal at 1/60th at 59mm.
The second image - it's difficult to say where the point of focus was, but again there may be some movement, although the shutter spped should be high enough, provided the subjects weren't moving too much. However, at 24mm, the 24-70 is probably at it's weakest if it's anything like the 24-105. Certainly, there is visible fringing, which will affect image quality.
The third image looks ok to me, the depth of field is very narrow, but otherwise there are some very sharp areas and the eyes look acceptably sharp too.
The shutter speed on the final image is also marginal, although it should be fine for still subjects, provided you keep the camera steady and I can't see any sign of movement. However, the focus is off, which focus point did you choose? The centre point wouldn't have anything to focus on, so I'm assuming you must have used one of the off centre ones (unless you manually focused). It could be that there wasn't enough contrast in the hair fo rhte AF to be accurate, although the lighting appears to be good, so it shouldn't be an issue. Did you have the IS on or off?