Shanti Dope, 10 Mar 2020Dude. The S20 Ultra's main camera is literally a Quad Bayer sensor! Well, Nona-Bayer actually,... moreThis is just a dual pixel autofocus of Quad bayer version. And nonacell is completely different than quad bayer. The main thing is CFA. Nonacell is using 6*6 CFA.
AnonD-754814, 10 Mar 2020You gotta be kidding. How can Samsung use this type of AF ? This type of autofocus is for Quad... moreDude. The S20 Ultra's main camera is literally a Quad Bayer sensor! Well, Nona-Bayer actually, but it's merely employing the same strategy but in a higher level.
Only the S20 and S20+ are using normal Bayer sensors, and those could've benefitted from this technology as well (this isn't exclusive only for Quad Bayer sensors), but we'll see how they do first before we can make proper conclusions.
Yeah you're right, I know the info but not the super complex ones, so I'd appreciate if you could educate me more about it. I know you'd respond and tell me to search Google, but I'm too busy right now to do that and this is just my time-killer to read some articles in this site that I've grown to love.
Shanti Dope, 10 Mar 2020ToF sensors are mostly utilized to calculate distance, and their relatively low megapixel coun... moreBro ! I know what it does. I was just shocked by your words.
TOF is used for depth of field only. Which is used to separate background from the focused subject.
It definitely isn't used for AF.
Shanti Dope, 10 Mar 2020It's definitely going to be better than the S20+, unless we figure out that Samsung also used ... moreYou gotta be kidding. How can Samsung use this type of AF ? This type of autofocus is for Quad Bayer sensor. Samsung is using a regular bayer sensor.
Looks like you know information very well but not deep enough.
"The idea is simple – Quad Bayer already splits each “pixel” into four photodiodes. This enables phase detection to work in both vertical and horizontal directions."
That's misleading. It's the larger microlens, which makes that possible.
"most Quad Bayer sensors can treat each photodiode as a pixel for higher resolution or group them for higher sensitivity"
It isn't a Quad Bayer sensor, it's a Quad Pixel sensor. That's fundamentally different (the technique for getting a higher resolution will be different, actually I am surprised that this is possible according to Sony). Nobody calls a Dual Pixel sensor a Dual Bayer sensor. A 12 megapixel dual pixel sensor has actually 24 megapixels.
AnonD-754814, 10 Mar 2020Tell me about TOF AF . I'm curious about that. ToF sensors are mostly utilized to calculate distance, and their relatively low megapixel count despite a normal sensor size (for a smartphone) means that its light gathering capability is great and very beneficial in lower lighting situations, where Dual Pixel PDAF normally falls apart and loses its effectivity.
I'm not fully aware of other uses of this type of sensor, but this is the primary use case of it right now for smartphones.
AnonD-754814, 10 Mar 2020Well explained. We also don't know yet whether it's better than Samsung Galaxy S20+ DPAF.It's definitely going to be better than the S20+, unless we figure out that Samsung also used the same technology for their phone, but that would be a scam to those people that are going to buy the S20 Ultra, as it is evident that it doesn't incorporate any sort of compensation for slow focusing speed and weak accuracy, as seen from many sample tests online.
Best autosystem on the market right now. Beats them all Xperia or Galaxy series.
AnonD-754814, 10 Mar 2020I think for still image , better means faster. What I basically mean is that it's not better when it's doing Task A than when it's doing Task B.
Focusing by means of Dual Pixel will be the same for both photography and videography, because it is basically performed on the sensor itself.
AnonD-754814, 10 Mar 2020You were going well until last 2 lines. I was starting to think you know something.
But when... moreDude, Dual Pixel PDAF literally just works at anything that the camera can do, be it still photography or videography.
A camera with Dual Pixel PDAF will focus just as fast for still images as it will for videos (or vice versa, however you want to interpret it, it's just the same thing), given that the shooting scenario and scene to be captured will be exactly the same.
Again, this is hardware-level of focusing technique, and focusing is done on the hardware side, so the speed and accuracy of focusing will be the same regardless of what the sensor will be doing.
AnonD-754814, 10 Mar 2020How is it possible using same sensor ?i think the sensor used in Xperia 1 ll is different even if has the same model number might have other updated features exclusively for Xperia
Shanti Dope, 10 Mar 2020Dual Pixel PDAF is hardware-level, so it works for both photos and videos. That's why there ar... moreWell explained. We also don't know yet whether it's better than Samsung Galaxy S20+ DPAF.
Shanti Dope, 10 Mar 2020No. Just no.
Dual Pixel PDAF is best for both photos and videos. Laser AF only helps the sens... moreYou were going well until last 2 lines. I was starting to think you know something.
But when you mentioned about TOF for AF I understood everything what I needed to understand.
Hybrid AF is better(faster) at still image than Dual Pixel . Search on youtube. Watch.
AnonD-754814, 10 Mar 2020Also same dual pixel AF used in Galaxy S7. Which, in itself, is better than that on the S20 Ultra, which lacks the feature.
AnonD-754814, 10 Mar 2020Did you hit your head somewhere ? Dual Pixel autofocus is better while capturing video. Dual Pixel PDAF is great for both. It's hardware focusing technique, so it should work for both tasks.
AnonD-754814, 10 Mar 2020For video Dual pixel autofocus is better. For still image Laser Autofocus is the best. So, whe... moreNo. Just no.
Dual Pixel PDAF is best for both photos and videos. Laser AF only helps the sensor to lock onto a subject, most specifically in low light situations, where the sensor might find it difficult to find the true subject due to insufficient amount of light.
Sony's Hybrid AF is technically a combination of hardware and software focusing techhniques. Dual Pixel PDAF is responsible for the hardware part, while on the software side, the camera performs up to 20 AF/AE calculations per second to ensure that the sensor would keep track of the subject if it's in motion. This one, btw, is enabled by the embedded DRAM on the sensor, which is the same as what Sony introduced back in 2017 (and allowed a short burst of 960fps super slow motion).
Sony, then, incorporated this to smartphones, and made it even better with up to 60 AF/AE calculations per second, and that is actually without a memory-stacked sensor (SD865 is pretty powerful to handle that anyway, so there's the answer).
The only thing left in nowhere here is Samsung, who relied purely on the ToF sensor that's just not that good enough to match the speed of even Laser AF, let alone Dual Pixel PDAF.