Pentax K-1 II vs Sony A99 II

Pentax K-1 II vs Sony A99 II

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Pentax K-1 II

A couple of years ago, at the start of 2016, Ricoh finally answered the calls from Pentaxians for a full-frame DSLR with the arrival of the Pentax K-1. We were seriously impressed by the weatherproof, 36-megapixel K-1, which paired great ergonomics with a lengthy laundry list of features, some of them completely unique to this camera.

Two years down the line, the K-1 has now received a followup in the form of the Pentax K-1 II. If you're familiar with the earlier camera, you already know most of what you need to about its successor, as the two are near-identical in most ways. There are changes in just a few key areas.

So what's new? Well, most importantly the Pentax K-1 II now features the same accelerator unit which made its debut in 2016's Pentax K-70, and was also sighted in the 2017 model year Pentax KP. So what, exactly, does this new unit do? Ricoh has played its cards pretty close to its chest thus far, but we can make an educated guess that it's being used to assist the main PRIME IV-branded processor with denoising.

The reason we can draw that conclusion is that the Pentax K-1 II's performance is basically unchanged from that of its predecessor. Full-resolution, full-frame burst capture is still limited to a maximum of 4.4 frames per second, while the 15-megapixel APS-C crop mode has slowed ever so fractionally from 6.5 to 6.4 fps.

But while burst capture speed is unchanged, the K-1 II's maximum ISO sensitivity soars a full two stops beyond what the K-1 could manage. Just as did the sub-frame Pentax KP before it, the K-1 II offers everything from a minimum of ISO 100 to a maximum of ISO 819,200, but it does so with a much larger full-frame sensor, so we'd expect more of the high ISO range to be usable than was the case with the KP.


Sony A99 II

At long last, Sony's new flagship A-mount SLT camera is here. The Sony A99 Mark II can capture high-quality 42.4-megapixel RAW images at a very impressive burst rate. It has an excellent hybrid phase-detect autofocus system to back up the fast capture speeds. On paper, the A99 II is an excellent SLT camera. Fortunately, its positives translated well to real-world shooting, although not without a few negatives. Ultimately, this very good flagship A-mount camera is rugged, durable and fast. If you have been waiting for an excellent full-frame A-mount camera, your wait is over.

Pros:

Superb image quality at low, moderate ISOs; Improved high ISO performance; Fast continuous shooting speeds; Very impressive hybrid autofocus; High-quality 4K UHD video; Rugged camera body.

Cons:

Multi-selector joystick can be awkward to use; No EVF live view at fastest burst rate; Buffer clearing is slow with no UHS-II support; 4K UHD video isn't as full-featured as E-mount counterparts.

At the heart of the A99II is a high-resolution, full-frame 42.4-megapixel CMOS image sensor using Sony's Exmor R backside-illumination technology. The sensor features a gapless design for maximum light-gathering efficiency, and includes on-chip phase detection autofocus pixels, which we'll come back to in a moment.

The new sensor, Bionz X image processor and a new front-end LSI together allow extremely swift burst shooting from the A99II. At its fastest, you'll be able to capture as many as 12 frames per second with both autofocus and autoexposure adjustments between frames. Sony has finally addressed some of the concerns that inadequate write speed in its cameras left customers waiting after a burst of shots, as it noted that even in high-speed continuous shooting mode, the Sony A99 II will allow image review immediately after shooting.With the Sony A99 II, the company debuts a new five-axis, in-body image stabilization system tailored specifically for A-mount cameras. Like that for mirrorless models which made its debut in the A7 II, the Sony A99 Mark II's image stabilization system can correct for X/Y translational motion, as well as for pitch, yaw and roll. And like the A7 II's system, it's said to have a 4.5-stop corrective strength.


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