You're saying "video quality", the quality is the 4k resolution and the 120 fps You're asking about is just how fast the shutter of the camera records. The max fps for the S22 U is 60 fps and you can use it with 4k (UHD), resolution can go up to 8k, but fps will drop to 24fps. Hope that helped.
Nothing to do with the lenses, that's an insane amount of data for the hardware to work with. Only a handful of phones offer that and to my knowledge they only offer it in a very limited lengths.
You won't find anything that changes the hardware of your device. It is a hardware component that needs to be changed or upgraded to allow such capability. 4k 60fps is still pretty amazing and you can turn on HDR to make colors more vibrant at the loss of 30 fps as well. There are limits and pros to everything. So either 4k 60fps, or 4k HDR 30fps.
It can in fact do 1080@120, but it's recently been relocated to the ProVideo mode, found by sliding your finger left along the bottom of the screen to "more" and selecting it from the available options. Unfortunately, all the lenses and software in the world cannot change the fact the sensors are just too small and the device is too multifunctional to tackle something this resource hungry. Even if 4k@120 is available to the S23 Ultra, it will be severely limited due to the size of the sensor, the amount of light that reaches it at 120fps and the ability of the device to then process and store that amount of data without severely overheating. Not to mention the battery drain. Also, the level of ISO that would be required to compensate for the lack of light reaching the relatively tiny sensor will most certainly render footage that is grainy to the point of unusability.
As of now, the only option to capture usable 4k@120 video would be a professional, mirrorless camera. I completely understand your interest in this realm of capture, but realistically, it's impossible to find a camera capable of what you want for less than $2,000 USD. The technology involved in properly implementing this capability in something the size and depth of a smartphone is simply not available, or at least, not remotely cost effective. Even 4k@30 on the S22 Ultra, while impressive from a technical standpoint, is lacking.
1080@120fps on the Ultra is perfectly usable, even outstanding at times, but there are some things to keep in mind to get good results. -Since the sensor is receiving substantially less light with every frame (half as much as it would receive at 60fps), the phone will try to compensate by raising the ISO, or the sensor's sensitivity to light. This results in grainy footage with a noticeable lack of depth, definition, sharpness and color accuracy. Adding a separate light source will help immensely and drastically increase the image quality of whatever you're shooting. It takes some practice, but having the correct lighting at 120fps will produce footage of comparable image quality to that shot in natural light at 60fps. Recording a video at 60fps and another at 120fps, then comparing the two, can help in determining which areas need more light. -Since you're capturing frames at such a high rate, every twitch and movement of your phone or hand will be caught. At 30-60fps, this isn't too jarring, and typically translates to a slight tremor or blur to the footage and can add an authentic feel to whatever you're shooting. At 120fps, it's very noticable and will break the immersion and pull the viewers attention from your subject. For stationary shots, a tripod is key to great footage, and the Amazon Basics tripod is a fantastic and affordable option. For moving subjects and action shots, a gimbal will go a long way to keeping everything stable and in focus. -Lastly, I encourage you to play around with the ProVideo mode. There you can adjust most settings found on a professional camera (ISO, focus, white balance, etc.) and learn the difference these settings make while shooting in different environments and lighting conditions. By default, all settings will be set to auto. Try experimenting with them one by one, from the left to the right. With some practice, you'll know exactly what to adjust to get the quality or effect you're looking for.
