It seems like the just-released Samsung HP2 is intended to present as a main camera CMOS of the S23 Ultra. Alongside a size of 1/1.3”, 200 million pixels in one, and a single pixel of 0.6 microns. Although it is not a factor of surprise in terms of size, this time the company focuses on another tech hierarchy.
Full well capacity with D-VTG technology
The highlighting point of the HP2 is its D-VTG technology, which is the “double vertical transmission gate.” This is responsible to increase the full-well capacity of a single pixel to a great extent. While, here FWC is enhanced by 33% as compared to previous ISOCELL, in the same area. This is going to be advantageous in several ways.
The benefits of D-VTG technology not only include its better conduction efficiency. Also, it can boost the potential difference of the charge well. And therefore, increasing the maximum number of electrons that PD can hold. While the bigger FWC indicates more extreme light intake in sufficient light. This is helpful for both highlight suppression and dark signal-to-noise ratio.
Dual Slop Gain
The HDR technology “Dual Slop Gain” that came into the limelight this time is DSG. While, it is speculated most of us that it is “dual conversion gain”, which is a kind of DCG.
Also, the “two separate conversion values” that are mentioned by Samsung are actually the readout capacitance of two FD regions. Out of which, one is large and one is small. At the same time, the small capacitance is related to high conversion gain and conversion gain.
Additionally, the conversion gain is seen as a slope, that is, “the voltage that a unit of electron energy can be converted to“. And the unit is mV/e-, which is the origin of the advertised “Slope”.
About 200 million pixels with focus
Alternatively, HP2 is gratefully the appropriate direction for mobile phone photography. This is not because of its high Pixel base, but because Samsung opts in order to sensor develop vertically. Since there is a chance of competing with an inch. This is especially when the small bottom of the mobile phone is usually packed with a large aperture.
Certainly, the high pixel quantity is also beneficial, whereas HP2 200 million pixels are equivalent to four in one 500w pixels. Also, this is divided into four grids to do Quad PD focusing. It means both oblique and horizontal/vertical can do phase detection.
Samsung’s quad-core focus, as compared with Sony’s 2x2OCL. It has the benefit that it has separation walls in small pixels. Also, the crosstalk is tiny and more conducive to algorithm restoration of details.
Comprehensive review
It is speculated and said that HP2 is presently the most balanced main camera CMOS. The HP2 should be considered as a 50MP quad setup. While each pixel comes with a focus function. Since its DSG function cannot be turned on at 200MP.
