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Forum: Pentax News and Rumors 09-23-2018, 10:16 AM  
K3ii replacement
Posted By Reed
Replies: 2,451
Views: 236,256
But it shows in clear way that sensors are not the same as in the K-3 and K-3II that both are stated to be 24.71 Mpix. Only other camera today that I'm aware of sporting 24.96 mpix sensor is Leica CL, I dunno if its just coincidence or those are the same units.
Forum: Pentax News and Rumors 09-23-2018, 04:40 AM  
K3ii replacement
Posted By Reed
Replies: 2,451
Views: 236,256
I'm quite sure both k-70 and KP use different sensors than K-3. Both have different effective pixel count and DR than k-3 and on sensor phase detection.
Forum: Pentax News and Rumors 09-19-2018, 03:06 AM  
K3ii replacement
Posted By Reed
Replies: 2,451
Views: 236,256
Indeed, but that is not because the SDM(piezoelectric micromotor) tech itself, but because its coupled with fancy gear mechanism assembly that need to be very precisely tuned etc and have to run quite heavy lens groups in rather large distance. IMO this kind of drive is suitable for lightweight super zooms like Tamron 16-300, not for beasts like 60-250/4 or even DA*55. With such lenses it is running on top of its possible power. Using it for constant aperture, internal focusing zooms and high grade primes was kinda shoot in the foot.
Forum: Pentax News and Rumors 09-19-2018, 01:44 AM  
K3ii replacement
Posted By Reed
Replies: 2,451
Views: 236,256
I've seen both Ricoh's SilverBox and Black/green Hoya box, star lenses to fail with SDM. The SDM piece itself looks little different than it was in first production runs, thing that changed the most is the circuit board within the lens, in newer revisions SDM "rotor" is a bit more "bulk",plastic gears seems to be built of diffrent material, but still IMO it is forced for too big torque than materials used can withstand for long. When not used, it seems to "stick" and when forced to move after long pause in use, whole mechanism is prone to ware out rapidly.

Only solution for that case is to develop a new transition system, drop the screw drive completely, and put there a motor that have enough torque potential to withstand the forces needed to drive focusing lens group. And that means redesign whole of the lens assembly and chassis, aperture mechanism control, probably also the lens formula itself.
Forum: Pentax News and Rumors 09-18-2018, 12:27 AM  
K3ii replacement
Posted By Reed
Replies: 2,451
Views: 236,256
I've panicked lately and picked up a new K-1II, damn, now I feel so much better. :D
Forum: Pentax News and Rumors 08-30-2018, 10:42 AM  
K3ii replacement
Posted By Reed
Replies: 2,451
Views: 236,256
TowerJazz Inc. or Toshiba
Forum: Pentax News and Rumors 08-23-2018, 02:16 PM  
K3ii replacement
Posted By Reed
Replies: 2,451
Views: 236,256
Maybe a KP-II ;)
Forum: Pentax News and Rumors 08-21-2018, 07:47 AM  
K3ii replacement
Posted By Reed
Replies: 2,451
Views: 236,256
I would like it to have this "quick release" grip that was patented some time ago.
Forum: Pentax News and Rumors 02-16-2018, 05:10 AM  
K3ii replacement
Posted By Reed
Replies: 2,451
Views: 236,256
Well that is quite an odd behavior of your K-3 copy then, I never used it with 560' but with DA60-250,DA Limiteds, DFA its quite snappy. KP is not necessarily faster, but it's definitely more accurate and decisieve, especialy in dim conditions.
Forum: Pentax News and Rumors 02-16-2018, 02:46 AM  
K3ii replacement
Posted By Reed
Replies: 2,451
Views: 236,256
Chris, I think you miss the point here. It took Nikon around 20years of constant development to be where they are now, and to fully use its capabilities they had to almost redo all of their lenses. That is also the point why Canon is currently doing new variations of their older lenses. Their strong point is that they made the "hard" decision of retiring mechanical coupled drives for stepper motors years ago. Phase detection AF is whole diffrent thing to develop than contrast detection used by Oly, Fuji, Panasonic. Sony also tried to make it their way with SLT tech. I find Ricoh efforts bigger than those of Hoya, there was almost no upgrade between that era AF systems. Ricoh made two big leaps forward with K-3 and K-1. KP autofocus is way more accurate that K-3 classic in my opinion.
Forum: Pentax News and Rumors 02-15-2018, 03:12 PM  
K3ii replacement
Posted By Reed
Replies: 2,451
Views: 236,256
Actually, quite a bit. Becouse simplest and most straightforward solutions to do that are already patented by Nikon. Also, improving autofocus is not even close to changing camera sensor, it brings many more problems such as creating new AF sensor, new algorithm, software, solving backward compatibility issues etc. AF tech is in house development, not licensed as is buying a ready to use image sensor from Sony along with dev-kit.
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