Originally posted by VladM I am getting a little bemused here. My thoughts are that if one would change the systems, it would have to be for the better, and not the other way around. Specifically, the members who are indicating moving to an Olympus system m4/3, from Pentax K20 apsc.
This is definitely a backward step. and to me makes no sense unless one already has Olympus lenses. I have a K20, and an Oly EPL1 which i use for casual shooting only when the SLR would not be appropriate. From my own experience, the Pentax is way ahead in IQ. Admittedly, the EPL1 is not the latest sensor, but neither is the my K20. Am I missing a point here - please enlighten me since to me this sort of move is illogical, aspecially if one already has a selection of good Pentax lenses. Wouldn't upgrading from K20 to K5 or even the new K-01 make more sense?
Size matters
. I find I use my camera the most when on travel. If I can mount a pancake prime to the new Olympus and fit it into a smallish belt pouch it would be nice. A small camera is also more discrete, which is nice. I also value weather-sealing, and do not see another company coming out with a small weather=sealed mirrorless camera any time soon. The k-5 was/is very tempting, but I just don't think it fits my style of shooting as well as the new Olympus will.
Also, I think you have to define IQ. It seems as if IQ has taken the meaning of lower noise at high ISO settings and the ability to restore a photo who's exposure was messed up in Photoshop. From my understanding, the Olympus' IQ is on par with DSLRs at low ISO settings (or at least very close). If this is not the case, I will have to rethink my future direction. But, I have seen some beautiful landscape shots done with advanced point and shoot cameras (a much smaller sensor), I think the micro 4/3 sensor will be adequate (But I am always looking to find out more information). As far as depth of field is concerned, Small Olympus lenses are about a stop stop faster than DA limited lenses (which I will get if I stick with Pentax). So control over depth of field should be about equal.
Also, at high ISO settings it kills my current K200D (ISO 800 is the max usable ISO, and 1600 is the absolute max).
Anyhow, that is the reason why I am thinking of purchasing the Olympus. I am very interested in the difference IQ between older Pentax cameras (i.e. k20 and k-7) with DA limited lenses and micro 4/3 cameras with top of the line lenses, so if you have any insight, feel free to pass it along.