Sensor

Zowie wasn't very keen on upgrading their sensors, and until the Divina lineup came out, only the EC-B models had PMW3360 sensors working in them—not to mention that lineup arrived pretty late to the party as well. The FK and ZA series still use PMW3310 sensors, which can be considered outdated, albeit still with rather stellar performance. Thankfully, the Divina S series feature the PixArt PMW3360, which is a top of the line optical sensor, absolutely raw and snappy and without any added hardware acceleration or filtering. Just like with many other mice using this sensor, there is a small amount of smoothing if you go above 2000 CPI.

Now, let's take a look at some specifications: the nominal maximum acceleration and tracking speeds are 50 G and 250 IPS. You can set the resolution in steps of 400, 800, 1600, and 3200 CPI. There are three available polling rate values; these being 125, 500, and 1000 Hz, which translates into response times of 8, 2, and 1 ms. The lift-off distance is below 1 DVD in height, and as far as I could tell, there is no way to adjust it. The LOD-changing methods for previous Zowie mice didn't work. Since the LOD is low by default, it shouldn't be much of a problem (I didn't hear any issues about it being so low that it would impair tracking). All tests were done on a plain black cloth mouse pad.

Paint Test

There is no jitter, unwanted angle snapping, or any sort of sensor lens rattle.

CPI Divergence

CPI divergence on the Zowie Divina S mice is low, and it's negative, which is very rare. This means the set 800 CPI value measures for about 785 CPI, for instance. Such deviations are really not significant in my opinion, but if you come from a mouse with perfect CPI accuracy, you might want to adjust your in-game sensitivity a little bit.

Perfect Control Speed

Perfect control speed (or PCS for short) is extremely high on the PMW3360 sensor—it takes a swipe as fast as 6-7 m/s to reach it (the nominal value is 250 IPS or 6.35 m/s, but it tends to go above that). There is pretty much no way to do so unintentionally in-game, even with at an extremely low sensitivity setting and a huge mouse pad.

Speed Related Accuracy Variance

This test shows the sensor's accuracy at different speeds. You can see me doing a fast swipe to the right before I slowly slide the mouse back to its original position. There is no acceleration or deceleration; any displacement in this test is almost entirely caused by human error.

Polling Rate

All polling rate values seem nice and stable since there are no suspicious periodic drops or other sorts of outliers.

Input Lag & Smoothing

Just like with many other PMW3360 implementations, the Divina S models have some smoothing above 2000 CPI. Since there are only four predefined steps, it only appears at 3200 CPI. It's not a huge amount, only about 1-2 ms, but for competitive play, I'd highly advise staying on one of the three lower resolutions steps.

On the first two xCount graphs, you can see that the 3200 CPI step has a small kink at the beginning of the swipe, which is indicative of where the smoothing starts above a certain speed. The actual input lag graphs are pretty self-explanatory, although it's good to know that values below 1 ms vary a lot, so it's quite impossible to measure such small amounts of delay with such a comparison method. Based on the graphs, the mouse might seem less responsive on 800 CPI, but that graph just happens to have turned out that way that time, and if you check the timeline, the 400 and 1600 CPI tests are inside that 1 ms zone as well.

Click Latency

Click latency is roughly +6.5 ms when compared to the SteelSeries Ikari, which is considered as the baseline with 0 ms. The data comes from this thread and my own testings. Testing was done with a Logitech G100s (covered lens) and a Divina S1, using qsxcv's program.