Originally posted by kittykat46 Absolutely none.
After using the K-5 with DA* and DA Limited lenses for the last 2 days, I consider "K-5 image softness", an Urban Legend created by badly shot review photos and abetted by measurebators trying to make conclusions from those same badly shot photos. GIGO....
Having said that, I have a caveat that this camera is very unforgiving on Average/ Mediocre Lenses and user errors. Its precisely because the sensor resolution is so high.
For example the old DA18-55 kit lens I have leftover from the K100D - simply won't cut it on the K-5. A few old lenses I bought low-priced from e-bay - I'll need to retire them. I'll just end up with a less-than-satisfactory 16MP image if I use them.
The P-TTL bug is real, at least on some bodies, and its likely just a firmware bug which I hope they fix in the future. Its very much up to you how this affects your purchase decision or timing.
So you got your new camera. Congrats.
Agree with you on the urban legend of image softness. Ha, ha, so you have discovered the same thing I discovered a month back about the K-5's amazing ability to resolve detail. Thankfully I don't keep old lenses because they just can't deliver in terms of resolving power. The first generation DA 18-55mm already couldn't resolve enough detail with the K20D/K-7, what more the new K-5.
After you use the K-5, you'll discover why plenty of legacy lenses ought to be retired for good. Lenses that you once thought were sharp are painfully revealed to be so-so only with this new sensor.
Never regret letting go of my K-7 because the K-5 is a quantum leap ahead.
If I may offer a car analogy, it's like going from a Hyundai to a Nissan GTR!!! You don't want to drive the Korean car anymore.