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iPhone 12 Pro 12 pro and HDR / photo app flicker

ejewels

macrumors newbie
Original poster
Oct 13, 2017
6
0
USA
Hey all,

I got a 12 pro yesterday (coming from an XS) so never really used the new camera system. I noticed that right after I take a regular photo and then open it up to preview it, it’s blurry at first then quickly gets sharp and the colors / exposure fluctuates and shifts a little. It’s like a slight delay as the phone is creating the image. I remember reading that the more complex camera system takes different readings with each lens and then puts it all together to create one nice image. Is this what’s happening here? I never saw this little delay to create the final image before on the XS.

also, I noticed that if “view HDR” is set to on in the photos app and I open up a photo that was taken that has HDR, there’s a little flickering as if it’s trying to adjust but then it stops. I read this HDR/flickering was an issue on the 11 pros too. If view HDR is off in the settings of the photos app, it doesn’t flicker.
Anyone notice this yet on the 12 pro? It’s very minor and livable but want to make sure it’s somewhat normal.
 

RocketFast

macrumors member
Oct 8, 2018
50
81
Bora Bora
Yep i have noticed it aswell! Takes a second to process the image after taking it. Both Xs and 12 pro has a dedicated image processor for just these things. Dont know why this one is slower though.

I think that it will get fixed over a software update. As with any newly released phone it will have some software issues.
 
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Creationuk

macrumors member
Jul 3, 2010
41
13
UK
I was literally just creating a thread for this exact same issue! Glad I am not the only one. I have an iPhone 12 Pro Max.

Also taken a screen recording of the issue.

Anyone else come across this? Tried turning off some / all of the options in the camera settings but this has fixed the issue.

P.S - My wife’s iPhone 12 Pro also does the same.

 
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Boyd01

Moderator
Staff member
Feb 21, 2012
5,142
2,394
New Jersey Pine Barrens
Coming from an iPhone 6s Plus to a 12 Pro Max, I also noticed this right away. But I think "it's not a bug, it's a feature" ;). Seriously, some heavy processing is going on and the camera software doesn't perform it until you view the image. I assumed they didn't want to tax the processor too much while you were actively taking pictures.

Doesn't bother me now that I know what to expect. Actually kind of interesting to observe what it does. And the HDR quality is certainly worth the wait. :)
 
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Madtiger27

macrumors regular
Nov 17, 2020
102
119
That is DEEP FUSION doing it’s thing...takes about 1 sec.

Smart HDR is instant.

Outdoor sunny pics are instant. Indoor pics or lower lighting (before Night Mode kicks in), there is delay due to Deep Fusion.
 
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Madtiger27

macrumors regular
Nov 17, 2020
102
119
Yep i have noticed it aswell! Takes a second to process the image after taking it. Both Xs and 12 pro has a dedicated image processor for just these things. Dont know why this one is slower though.

I think that it will get fixed over a software update. As with any newly released phone it will have some software issues.
That is because XS does NOT have Deep Fusion. 11 and 12 “flicker” due to Deep Fusion doing its thing in less than optimal lighting conditions.
 
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Madtiger27

macrumors regular
Nov 17, 2020
102
119
What is Deep Fusion? This is for A13 (iPhone 11) but applies to A14 (iPhone 12) as well. (NOTE: A14 likely is able to do below stuff even better because the huge Neural Engine of A14 is gigantic and much more advance than A13.)

Much like Apple’s Smart HDR, Deep Fusion relies on object and scene recognition, as well as a series of eight images captured before you click the shutter button.

Of the eight images, four are taken with standard exposure, and four with short exposure. A ninth picture is then taken with a long exposure when the shutter button is triggered. The short exposure shots are meant to freeze time and bolster high-frequency details like grass blades or stubble on a person’s face. Therefore, the sharpest image of this series is chosen to move on to the next step.

Three of the standard-exposure shots which display the best color, tones, and other low-frequency data are then fused with the long-exposure frame to compose a single image. This image and the sharpest short-exposure frame are then sent through neural networks, which choose between these two images (my edit: 12 MP + 12 MP = 24 million pixels analysis) for the best pixel to ultimately represent this photo. This pixel-by-pixel analysis enhances your images by ultimately minimizing noise, sharpening details, and accurately coloring your photos, doing so on a very granular and intelligent level.

All of the post-shutter processing is done behind the scenes, so it won’t impact your photo capture time. In other words, you can still snap back-to-back photos just as quickly as you ever could on the iPhone, and if they’re all using DeepFusion, they’ll simply be queued up in the camera roll to be processed in order.

1605981715819.png
 
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