Pentax k1 o Nikon d750 o d500

“ Expeed 3 (ARM) Edit
In the Nikon 1 series September 2011 Nikon introduced a new largely changed architecture ? the main control unit it uses an ARM microcontroller which requires new firmware compared to the totally different Fujitsu FR microcontroller used in all former Milbeaut and Expeed processors. It is also the first Expeed using digital image sensor readout ? no analog image sensor interface is needed. In the Nikon 1 cameras introduced September 2011 it uses 1 GB fast DDR2 RAM packaged in 2x 4 Gbit chips. Nikon marked EI-160, manufactured in the Fujitsu 65 nm process.

High-speed dual multi-core image-processing engines with world record (Nikon claim) 600 megapixels per second speed, enhanced H.264 HD video engine and controlled by a dual-core ARM microcontroller are the main improvements.[9] [18] [40] Its high speed allows the world's fastest speed (Nikon claim) of 60 frames per second (10 fps with full autofocus).

Expeed 3A Edit
The Expeed 3A, a successor to the Expeed 3 EI-160 used in the Nikon 1 series, was first released in the Nikon 1 V2 and mainly features an increased world record image-processing speed of up to 850 megapixels per second.[41] This enables 60 frames per second (15 fps with full autofocus) speed even with the new 14 megapixel image sensor. It is developed exclusively for Nikon 1 cameras.[42]


Nikon D70S 6 megapixel CCD image sensor
Expeed 4 Edit
Expeed 4 uses a processor with ARM central controller, and is used in the Nikon D810, Nikon D750, Nikon D5300, Nikon D3300 and Nikon D7200. It offers full HD (1080p) video capture at 50/60 fps with improved contrast detection autofocus and live preview autofocus. It includes all of the features of the Expeed 3 (FR) and older versions of Expeed, plus it consumes less power.

The Nikon D4S's processor is identical to the Nikon D4, marked EI-158, using its processing power with improved software enabling 1080p video capture at 50/60fps, 11 fps photos with improved autofocus, new noise reduction with image-content variable algorithm (context-adaptive)[43] [44] and other improvements.[4 „

“ Briscolina? Pokerino? „

“ Ok further update....

I think I've narrowed this weird low light behaviour down to PDAF focus settings in AFS. I'm convinced a firmware update will quietly update this. And I have confirmed behaviour on two shop bodies.
If you enable AF-S but have focus priority (even with center point) enabled the camera will focus to the point, hesitate frustratingly, then light up the focus point LED and release the shutter. This hesitation is crazy because of the aforementioned post with CDAF being faster in live view than OVF and PDAF.

Switching the PDAF and AFS to release priority and it's an entirely different ball game and makes a huge difference to focus performance and camera operation for event work. A half depress has the camera racing to focus and a full press has it light the focus LED and grab the shot. Even test shots going from infinity to close with a full depress of the shutter in this mode have yielded in focus and accurate shots. It's blazing quick with 24-70, 15-30, the 3 amigos and even 70-200.

Tonight I've done a side by side with a buddy with a D750 (set to release priority as well as well as focus priority) in single shot AFS.
In the ISO6400 and low light (possibly -2EV) the K1 was both noticeably faster and more accurate when both had their focus point set to center af point. Pentax with the DFA* 70-200 and Nikkor 70-200 F2.8 on the D750. Both wide open at F2.8.

For now I've my camera set to release priority and I'm suddenly really enjoy this camera a lot - it's focusing is pro-grade DSLR quick

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