Adam from PF tried out the K5IIs and is very positive of this camera.
Before anyone thinks that the owner of PF would certainly be a fanboy and give a biased impression, do note that Adam has never been biased regarding his views and reviews on Pentax stuff.
The Pentax K-5 II / K-5 IIs Report - Pentax Camera News & Rumors - PentaxForums.com
We have to admit that prior to arriving at Photokina, we were not overly-impressed by Pentax's announcement of the K-5 II and K-5 IIs. The two new cameras seemed to share almost everything in common with their predecessor except for a few minor changes, and they were already outclassed in some areas by Pentax's mid-range K-30, which was launched this summer.
However, after trying the camera out and gaining a deeper insight into the hardware after our interview with Pentax, we're confident that the K-5 IIs is in fact a significant upgrade over the K-5 in terms of not only autofocus and handling, but also, and most notably, image quality.
In total, four major changes distinguish the K-5 II from its predecessor:
A new autofocus system with improved accuracy and reduced latency, able to make measurements in as little as -3EV ambient light
A new air-gap-less LCD screen designed to be easy to see when outdoors
Improved firmware with better stability and new AF features, including AF area expansion
Removal of the anti-aliasing filter from the sensor, resulting in greatly increased resolution at the risk of seeing moire in images (K-5 IIs only)
Before anyone thinks that the owner of PF would certainly be a fanboy and give a biased impression, do note that Adam has never been biased regarding his views and reviews on Pentax stuff.
The Pentax K-5 II / K-5 IIs Report - Pentax Camera News & Rumors - PentaxForums.com
We have to admit that prior to arriving at Photokina, we were not overly-impressed by Pentax's announcement of the K-5 II and K-5 IIs. The two new cameras seemed to share almost everything in common with their predecessor except for a few minor changes, and they were already outclassed in some areas by Pentax's mid-range K-30, which was launched this summer.
However, after trying the camera out and gaining a deeper insight into the hardware after our interview with Pentax, we're confident that the K-5 IIs is in fact a significant upgrade over the K-5 in terms of not only autofocus and handling, but also, and most notably, image quality.
In total, four major changes distinguish the K-5 II from its predecessor:
A new autofocus system with improved accuracy and reduced latency, able to make measurements in as little as -3EV ambient light
A new air-gap-less LCD screen designed to be easy to see when outdoors
Improved firmware with better stability and new AF features, including AF area expansion
Removal of the anti-aliasing filter from the sensor, resulting in greatly increased resolution at the risk of seeing moire in images (K-5 IIs only)