K3 or K5 IIs as second body having already a K5IIs?

Started Apr 27, 2014 | Discussions thread
audiobomber Veteran Member • Posts: 5,764
Re: K3 or K5 IIs as second body having already a K5IIs?

joaquim hierro1 wrote:

audiobomber wrote:

The main difference is in auto-focus.

  • Prior to the K-3, the size of the Pentax AF points has been a constant complaint. The K-3 allows pinpoint accuracy in AF-S due to smaller points.
  • AF-C is improved immensely. The K-3 uses colour to track the subject, and 27 vs. 11 points for closer tracking. AF Hold control is an important feature, not available on previous Pentax bodies.

Thanks Dan for your reply.

what would be your choice for landscape and for portraiture.

I've noticed with the K5IIs some exaggerated or "cruel" red skin imperfections in some portraits. Could it be the lack of anti-aliasing filter? Could this be corrected using K3 with the filter "on"?

Landscape and portraiture are kind of opposites. Landscape shooters want corner to corner sharpness at small apertures, and often pump the colour/contrast. Portraits shooters value softer corners for subject isolation, like to blur skin detail, and want natural or even de-saturated colour/contrast. I rarely shoot portraits, and I've never shot a K-5 IIs, but here are my thoughts, for what they're worth.

  • I find skin tones from the K-5 family pretty horrible. White balance is to the cool side (too blue) and may be the reason you note the highlighted skin imperfections. The blue cast can make landscapes and water bodies look spectacular. Of course in raw images, an extra step of processing or a suitable import profile makes WB whatever you like.
  • The K-3 has more detail, always a plus for landscape, and can blur sharpness, sometimes desirable for portraits. If the subject is wearing fine patterned clothing, a blur filter can save you some work in post-processing. I've never tried to remove moiré, but I believe it is time consuming and never as good as not having had it in the first place. K-5 IIs owners say it is seldom a problem, but it depends on what you shoot. Even with the blur filter off, the finer pixel pitch of the K-3 is less likely to show moiré in the first place.
  • The K-3 also has three f2.8-sensitive AF points vs. only the center point in the K-5 IIs, which in theory should make it a little better for fast portrait lenses.
  • The K-3 has faster CDAF, with focus peaking (no FP on K-5 family).
  • Dual card slots are a great feature and can be a lifesaver for important shoots. Card failures are rare, but I've had a couple.

I waited for the K-3 and it was definitely the right choice for me, mostly due to more pixels for cropping bird photos, and superior AF-C for BIF and sports. If your finances allow it, I don't think you'd regret buying the latest and greatest.

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