Ok so I set up my tripod in my backyard today to get some controlled sample shots. I took three shots in the same conditions. I used a wireless remote with a 3 sec delay for each shot. I set the aperture to F/5.6 for each shot. This is a comparison of quality between the DA*16-50 and the DA 18-55 kit lens, then a shot again with the DA* 16-50 /w the circular polarizer (Hoya HD) on. Shake reduction was turned off for all these shots.
DA* 16-50, AV mode, F/5.6, ISO-200, @ 1/800
Now a 100% crop
DA 18-55, AV mode, F/5.6, ISO-200, @ 1/1600
Now a 100% crop
DA* 16-50, AV mode. F/5.6, ISO-200, @ 1/400 /w Hoya Circular Polarizer
Now a 100% crop
If you look at the quality of the DA* vs. DA, it is very hard for me to notice much a difference in quality of the picture, but the DA* does take a slight edge, but it's not as much as I thought it would. One thing I found odd was how in AV mode the DA* would only allow 1/800 shutter speed, while the DA was twice that @ 1/1600. The darker image left by the DA would have to be because of the shutter speed. If you also notice when used with the polarizer the DA* went from 1/800 to 1/400 and the quality of the image dropped very noticeably.
I wonder if there is something wrong with my DA* 16-50. I don't know any reason why the shutter speed would be reduced in half. Any ideas?