Sensor

Nixeus dropped the sensor bomb with the first REVEL, and they didn't change the formula: the eye of the mouse is once again a PixArt PMW3360, one of the best optical sensors currently available. Raw, snappy, and with a 1:1 track feel devoid of additional filtering or acceleration whatsoever, there is a small amount of smoothing above 2000 CPI. However, as with the REVEL Fit, it is a usually negligible +2 ms. More on this in the input lag section.

As for some sensor specifications, the maximum nominal tracking speed and acceleration values are 250 IPS and 50 G. You can set the resolution from 100 to 12,000 CPI in increments of 100 CPI. The available polling rates are 125, 250, 500, and 1000, which translates into nominal response times of 8 ms, 4 ms, 2 ms, and 1 ms. The lift-off distance is low, slightly below 1 DVD in height (1.2 mm) on a black cloth mouse pad. There is no option to change this in the software.

Paint Test

There is no jitter on the reasonable CPI steps, or unwanted angle snapping. There is probably a tiny amount of sensor lens rattle, but I am not entirely sure. It was hard to test this time around because of the feet around the sensor lens hole. It is nothing to worry about, though, as it caused absolutely no issues in-game, on the desktop, or anywhere else. Here is what it looks like to have a really rattly sensor; there is nothing of the sort on the REVEL Fit.

CPI Divergence

CPI divergence on the REVEL Fit is moderately high, which means you should probably adjust your in-game sensitivity accordingly. Please note that this test is not 100% accurate, but close to reality.

Perfect Control Speed

Set at above 6.5 m/s, perfect control speed (or PCS for short) is very high on the PMW3360—there is no way of hitting this value while gaming, even with incredibly low in-game sensitivity. The PCS values don't correlate with the set resolution, which means 400 and 12,000 CPI both hit their limits at about the same value.

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 is almost entirely caused by human error in this test,

Polling Rate

All polling-rate values between 250 and 1000 Hz seem to be nice and stable; there are no suspicious outliers or periodic drops. 125 Hz is quite interesting, however, as there are periodic drops, and it generally doesn't seem stable. Strange issue, but I don't think it is a deal breaker as most people are going to use the mouse on 1000 Hz, or maybe 500 Hz.

Input Lag

There isn't any detectable input lag on or below the 2000 CPI step. Above 2000 CPI, the PMW3360's smoothing starts, which adds about +2 ms to all CPI values above 2000. + 2 ms is pretty much negligible, but if you're playing multiplayer games at a high level, I would advise against using the mouse with a CPI setting above 2000 CPI.

Click Latency

The click latency is roughly +6.5 ms compared to the SteelSeries Ikari, which is considered as a baseline with 0 ms. The data comes from this thread and my own testings. Testing was done with a Logitech G100s and the REVEL Fit, using qsxcv's program.