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Pentax K-3 III details - Printable Version

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RE: Pentax K-3 III details - Kunzite - 11-02-2020

The subject recognition and tracking is done using a 307k pixels RGBIr metering sensor. That's VGA resolution, and a higher number than Nikon's (D6 included), but the Canon 1Dx Mark III has 400k RGBIr pixels.

The "why are they targeting this niche?" comments are funny.
Before, it was "Pentax has nothing good enough for sports!"; now, it is "Pentax made something for sports, WHY???". Please make up your mind, people, instead of changing to be the opposite of whatever Pentax is doing :p

This isn't a sports camera, not in the sense of a 1Dx Mark III or D6. I see it rather as an outdoor, wildlife camera, and why not? sports but not the likes of Olympics. More like a local dirt motorcycle racing.
It isn't about entering new territories, but doing more, better where it was already used to some extent. This camera is an enabler.


RE: Pentax K-3 III details - Brightcolours - 11-02-2020

The Canon EOS 90D has a similar metering sensor, with slightly lower resolution (220.000 pixels), as does the Nikon D500 (180.000 pixels).


RE: Pentax K-3 III details - Kunzite - 11-02-2020

Previous Pentax cameras had an 86k pixels RGB metering sensor; going to a 307k RGBIr is quite a jump. That is the second best on a DSLR, regardless of the price.
I can't wait to see what it's capable of.


RE: Pentax K-3 III details - Brightcolours - 11-02-2020

(11-02-2020, 04:43 PM)Kunzite Wrote: Previous Pentax cameras had an 86k pixels RGB metering sensor; going to a 307k RGBIr is quite a jump. That is the second best on a DSLR, regardless of the price.
I can't wait to see what it's capable of.

Probably not much ;-)

Nikon's D500 is a bit better at tracking with the metering sensor information than the Canon EOS 90D, so it is not the resolution of the sensor but how the information is put to use.


RE: Pentax K-3 III details - Kunzite - 11-02-2020

Thanks, but I'd rather believe the camera itself than your anti-Pentax bias.


RE: Pentax K-3 III details - davidmanze - 11-02-2020

(11-02-2020, 04:47 PM)Brightcolours Wrote: Probably not much ;-)

     Personally I will wait and see ...... I'm actually quite optimistic !!


RE: Pentax K-3 III details - Kunzite - 11-02-2020

So am I. Now, I require hard evidence before starting to believe it could match the D500 - but clearly, they've put some effort. 101 AF points from 27-33 (not happy with only 25 cross-type, but let's see the layout), metering sensor of 307k RGBIr pixels from 86k RGB... this is not your grandfather's SAFOX.


RE: Pentax K-3 III details - davidmanze - 11-03-2020

(11-02-2020, 09:41 PM)Kunzite Wrote: So am I. Now, I require hard evidence before starting to believe it could match the D500 - but clearly, they've put some effort. 101 AF points from 27-33 (not happy with only 25 cross-type, but let's see the layout), metering sensor of 307k RGBIr pixels from 86k RGB... this is not your grandfather's SAFOX.

 I wouldn't worry too much about about AF cross-points ...... when you see Nikon's technical solutions info  ...... you see that actually many of the higher priced telephoto lens can only use some of them ......
linked here:

https://nps.nikonimaging.com/technical_solutions/d5_tips/af/focus_points/

 ....... the AF-S 600mm F4E FL can only use 63 cross points out of 153 ... tele-converters drop that down to 45 CPs...... with the gaps in between being line points ......
....... btw. ..... when you mount the Tamron 150-600mm G2 on the D500 it won't focus in the extreme corners at 600mm .... so who knows how many CPs are even being used at 600mm @ F6.3 ?? (max aperture @ 600mm)  .... yet no problems !!

  Pentax had a problem with AF as much that in AF-C, the subject distance before the camera would react to a focus change, was twice that of AF-S ........ (I did careful tests K3/K5) ...... probably because the processor was not capable of processing smaller incremental adjustments fast enough and had to be restrained ....... I call it dead-band ....
With two processors and its new AF array, hopefully the dead-band will be equally small in both AF-S and AF-C .....