Zoolander,
Can't say I've come across your alias here before - I'm Alex
As the owner of both (K-5 IIs and K-3), I haven't noticed a difference in SR. I have, however, noticed a difference in the handheld keeper rate that you describe. Perhaps it was my lenses as Adam described (although that's doubtful as many of my lenses are very high quality). But I think the key is what was mentioned above:
Originally posted by BrianR This is harder on the higher megapixel images as it's being magnified more.
When pixel peeping, I have noticed that I have had to really focus more on my technique to really bring out the quality in that sensor. I don't notice it at web sizes - if anything the flaws are hidden a little bit because it's downsized that much more. But viewing at 100% it becomes more apparent. Something also to be aware of is what that pixel magnification means. Here's an example taken from the recent
HD 55-300 WR In-Depth Review comparing the magnification between the consumer lens and the DA* 60-250, across both the 16 and 24 AA-less mpx cameras.
If you want the 100% crop version (that isn't 100% but slightly downsized for the web) to explore, click
here.
Something that is more valuable than just the pixels/resolution is how you plan to use the cameras. If it is just snaps here and there, then I would recommend the K-5 IIs. If you are interested in sports, wildlife, where the improved AF, more focus points, and high speed fps burst are critical, or landscape, where you will be deliberate and with a tripod, the K-3 will be of benefit to you. Weddings or other professionally paid work would benefit from the K-3 because of the dual SD card slots (where you can simultaneously mirror the two cards to record the same thing for a backup). If you are a studio photographer, then you may be interested in the FluCard which allows not only remote transfer of the files (like any EyeFi WiFi card) but also
remote live view and
remote capture from your phone, tablet, or computer (or WiFi enabled smart TV if you have one).
For me, going back to being deliberate - I have found myself becoming way more deliberate lately. Recently I just returned from Scotland (still working on the pics - they will be posted here when I get a chance - in the middle of moving my house
), and I used a tripod for
at least 50% of my shots. Normally on a trip like that the tripod was mostly in a situation where it absolutely had to be used (i.e. long exposure, self portrait with no one to take the picture, etc.). Now, my focus had been, "I'm going to use ISO 100 as much as humanly possible" rather than relying on the high ISO ability. Just in that exercise the quality of my photographs have significantly increased (at least I think so
).
Lastly, and since you are planning to hold them in hand - the K-3 is slightly beefier, but not by much. But, it is in all the right places in my opinion. I used to the think the K-7/K-5/K-5 II(s) series of bodies was the end all be all, but somehow Pentax has improved upon that which I thought unimprovable. The K-3 is just so much more refined. I honestly think it's the best built DSLR on the planet. Including the 1DX/D4s types.
I know it seems like I am pushing the K-3 - I am: it's a phenomenal camera that really just improves on everything the K-5 IIs does. But if you aren't in need of any of those features, and it's just to upgrade your K-5, then your money is better spent on the K-5 IIs and the difference applied to a really good lens (a Limited?).
Hope this helps.
-Heie