od panrt 9. 9. 2017 13:46
Info o fotočipu LG V30. Jedná se o nový IMX 351 At IFA 2017, LG is promoting the V30 camera’s f1.6 large aperture and glass lens with good reason. However, we noticed that the V30 sensor surface area (~16.45 mm²) and sensing pixel size (1µm) were smaller than the V20’s (20.28 mm², 1.12 µm). The main LG V30 16 Megapixel camera module uses a Sony IMX-351 mobile camera sensor.
As we played with the phone, the LG V30 still manages to produce an outstanding image quality despite the small sensor. Sensor specs is not the only parameter for photo image quality. The larger aperture and improved lens can compensate partly for the sensor size. Of course, signal and image software processing remains one crucial factor.
But to to obtain such good image-quality with this small sensor borders on sorcery, especially in low-light where the V30 seems to compete with the iPhone 7. In daylight photography, the extra Megapixel count makes it produce image a bit sharper than the top 12 Megapixel phones. I’m continually impressed with the Image Quality Tuning skills from LG camera engineers. I can only imagine what they could produce with a 25 mm² sensor + 1.44 µm pixels.
Also, LG did not promote Optical Image Stabilization (OIS) for its main camera, but I can confirm that it is indeed present on the 16 Megapixel camera module. In addition to OIS, I think that LG and other OEMs are using multi-shots techniques more than in the past. This involves taking several high-shutter speed images and combining them into a single final photo.
"SUCH GOOD IMAGE-QUALITY WITH THIS SMALL SENSOR BORDERS ON SORCERY"That’s exactly what the Google Pixel does, and this works very well. Not only the high shutter speed makes the camera a bit less reliant on OIS, but shooting successive images like that in low-light conditions actually reduces the noise-to-signal ratio. The (very big) challenge is to re-align the images to compensate for small camera movement during the capture. I was under the impression that the LG G6 camera greatly used this technique, but it might have been further tuned since.