Originally posted by Pink Am I right or wrong on this !?
...I am thinking more on a K=50 because it has a far more ISO capability than the K-5 , ... For as little as I know , that means better photos in low light situations , right !?
...also newer video formats !...
I want to use it mostly on portraits , say weddings , graduations , parties , architecture ! so , I guess a higher range in ISO is whats most helpful for this situations , right !?
Plus , a K-50 is a bit newer ... not sure if it matters too !...
You're right that the K-50 is a bit newer (released some months after the K-5IIs) but having owned the K-5, the K-5IIs (I sold the K-5 and kept the 5IIs) and extensively used the K-50 (my best friend who I introduced into the DSLR world and Pentax bought it) I can tell you that although the K-50 is a great camera the K-5 series are even better and especially the improved K-5II and IIs. Moreover you can feel when you hold the cameras from the ergonomics and the design that the K-5 series are meant as professional cameras (they were the flagship of APS-C category) and trust me the low light capabilities of K-5IIs are clearly better than K-50.
Don't get me wrong, if you have decided on the K-50 it is an excellent camera, but if you are in between I would recommend the K-5 (IIs even better). Finally for what it's worth here is the DXOmark score of those sensors that gives an idea of what I'm talking about (vs the D500 which is like a benchmark for the APS-C cameras from its introduction):
Nikon D500 vs Pentax K-50 vs Pentax K-5 IIs
The DR of the K-5IIs is impressive and everytime I open a RAW file on CR, I'm impressed of how flexible and full of information their files are! Even compared to the K-1 files
Anyway, I would recommend to find those 2 bodies in a shop (or a fellow Pentaxian near you) if possible and hold them-test them to make up your mind (if as I said earlier you haven't decided yet!)