Both IMX290 and IMX291 are Sony 2MP low light imaging sensors of same size of 1/2.8. Sony semiconductor website has specs for the IMX sensors and reading them the only difference I see between IMX290 and IMX291 is BOL-HDR in IMX290.
The spec sheet says BOL-HDR has improved picture quality under low illumination. If that's true, why then make a IMX291. There has to be something else that makes it's existence worthwhile.
I see cameras with both sensors. Dashcams seem to use IMX291.
Anyone know what's the difference between IMX290 vs. IMX291? Why choose one over the other?