List of high-quality authors
This time, the main cameras of Redmi K70 and Redmi K70 Pro are equipped with Light and Shadow Hunter 800 - corresponding to OmniVision's OV50E (this model shall prevail below). First of all,1/1.With a 55-inch bottom, it's basically IMX890Level;A 2-micron 4-in-1 blended pixel means that the native subpixel size is 1 micron.
Both of these parameters are basic and easy to understand, and the key third parameter is 13What is 2EV?This combines the Light and Shadow Hunter 900 (i.e. Howey OV50H, this model is subject to 13 below).5ev, a little calculation to know the difference, written as a calculation is: 2 135÷2∧13.2 100% = 23% (symbols to the power).
This means that the native dynamic range of the OV50H is 23% larger than that of the OV50E, so is the dynamic range of the two really that good?You must know that the maximum dynamic range of Sony mirrorless 7R5 is only 14EV, isn't it embarrassing to have such a small gap?So it's not that simple, let's start with an in-depth analysis.
Note: 1. The reason why it is said that the IMX890 level is not IMX766 is because the full pixel output frame rate of the OV50E is the same as that of the IMX890.
Previously, on the poster of Xiaomi 14, it was advertised that the native dynamic range of the OV50H was eight times higher than that of the Sony IMX989 - from which it can be inferred that the native dynamic range of the IMX989 is 1033ev。Generally, the native dynamic range of mobile phone sensors is about 60dB, which is equivalent to about 10EV, so the value of IMX989 is normal.
Then 50 of the ov13What's the deal with 5ev?It turns out that the dual-native ISO fusion MAX technology advertised by Xiaomi is actually the fusion of dual-native ISO fusion and dual-conversion gain, which is exactly the same as the technical principle of Samsung's Smart-ISO Pro.
If you remove the 24dB (i.e. 4EV) dynamic range buff brought by dual native ISO fusion, then the native dynamic range of OV50H is only 95EV – this is the amount that fits the dynamic range of a normal sensor. If the stronger Samsung also promotes it like Xiaomi, then the Sony micro-list that is tens of thousands of yuan larger will not need to be sold.
So why does Xiaomi dare to claim that this is native dynamic range?It turns out that the dual-native ISO Fusion MAX technology can synthesize 14-bit RGB RAW to improve the dynamic range from the RAW domain, so it was announced as "native" by Xiaomi.
However, in the case of a straight out, the dynamic range gap in the RAW domain is not fully represented;In particular, the optical quality of the lens of the mobile phone, as well as the full well capacity of the sensor and the accuracy of the ADC, are the existence of the camera!There is no comparison at all.
It can also be seen from this that the ultra-high dynamic range of the hanging IMX989 advertised by Xiaomi, the actual shooting will only show obvious advantages in some scenes that require high tolerance. The dynamic range gap is there, but it's not as exaggerated as the official says.
In addition,If the model equipped with IMX989 is a Blue Factory X100 Pro, a ZEISS optical coating plus buff player, then the dynamic range advantage of OV50H is wiped out。Photography is a comprehensive project, so the analysis must be comprehensive.
On the whole, the native dynamic range of OV50H is really excellent, but it can't do it to the point of beating IMX989 like publicity, especially in the face of opponents with better lens optical quality, it can't be cheapened. The same goes for the OV50E.
13.The native dynamic range of the 2EV can be used as a reference, but it is not everythingAfter all, the final imaging difference is not that big, and the final tolerance performance depends on the quality of the main camera's lens. I have to say that Xiaomi is really good at marketing, after all, the technology of dual native ISO Fusion MAX is too abstract and not conducive to publicity.
In addition,The OV50E (Light and Shadow Hunter 800), which looks good, is used on a Redmi phone with a historically strained imaging algorithm, and the final result may be disappointing because it doesn't bring out the full power of the sensor used.
endCommitted to the exploration and collation of mobile phone knowledge.