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purdnost

macrumors 6502
Original poster
Dec 2, 2018
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According to this article, iPhone 15 Pro's 24-megapixel photos are better than 48-megapixel shots. I’m confused by this. Does this apply to just HEIF format or HEIF and RAW?


The details:

Photographers might want to know why last year Apple limited the default settings to 12 megapixels and this year it’s limited to 24 megapixels, despite the main camera’s sensor boasting a total of 48 megapixels — shooting in HEIF, the files generated there aren’t that large. Photographers might think that they should just shoot these higher-resolution HEIF files whenever they want that extra detail, but there are reasons to keep using Apple’s defaults.

“You get a little bit more dynamic range in the 24-megapixel photos,” McCormack explains. “Because when shooting at 24-megapixels, we shoot 12 high and 12 low — we actually shoot multiple of those — and we pick and then merge. There is, basically, a bigger bracket between the 12 high and the 12 low. Then, the 48 is an ‘extended dynamic range,’ versus ‘high dynamic range,’ which basically just limits the amount of processing. Because just in the little bit of processing time available [in the 24 megapixel] we can get a bit more dynamic range into Deep Fusion. So what you end up with in the 24, it’s a bit of a ‘Goldilocks moment’ of you get all of the extra dynamic range that comes from the 12 and the detail transfer that comes in from the 48.”

McCormack adds that photographers will also get zero shutter lag when they’re shooting at 24-megapixels — shooting at full 48-megapixel resolution means that you don’t get an instantaneous shutter.
 

newton4000

macrumors regular
Apr 24, 2015
173
232
Anybody test out the differences between the 48 mp proraw and the 24 mp heifs?
I love the ability to work with the 48 mp proraw captures, but they are very space hungry. Anyone tested how they compare and how malleable are the 24 mp heifs in Lightroom?
 

Benz63amg

macrumors 601
Oct 17, 2010
4,393
914
I have my 15 pro set to take photos in HEIF MAX to shoot 48MP photos. Any downside to doing that other than the slightly larger file size per each photo compared to the default setting which shoots in max 24mp? ProRAw images are way too large in size so that’s why I opted for HEIF MAX instead.
 
Last edited:

ctjack

macrumors 68000
Mar 8, 2020
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1,575
Proraw has a lot of unnecessary information for just looking at the pics - i take raw if i need details. Lets say car hit and run and 48mp raw has higher chance of taking the plates. Eventually all raw meant to be edited, so heif max sounds like a good option introduced with 15 pro lineup.
 

Benz63amg

macrumors 601
Oct 17, 2010
4,393
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Proraw has a lot of unnecessary information for just looking at the pics - i take raw if i need details. Lets say car hit and run and 48mp raw has higher chance of taking the plates. Eventually all raw meant to be edited, so heif max sounds like a good option introduced with 15 pro lineup.
I’m confused after reading the article linked to above by purdnost. So should I use HEIF Max and shoot photos at 48mp on my iPhone 15 Pro or the apple default of 24MP?
 

ctjack

macrumors 68000
Mar 8, 2020
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I’m confused after reading the article linked to above by purdnost. So should I use HEIF Max and shoot photos at 48mp on my iPhone 15 Pro or the apple default of 24MP?
From the article:
Then, the 48 is an ‘extended dynamic range,’ versus ‘high dynamic range,’ which basically just limits the amount of processing.
To me this alone sounds like a reason to use 48MP Heif Max.
From the dpreview thread, please find the pic of the lighthouse on the shore: in the very dark areas under the roof, bricks indeed don't look black on 24MP due to higher dynamic range, while Heif Max has that space almost blacked out. But overall the difference in dynamic range is minimal and need to look for it with a magnifier, while sharpness of 48MP Heif Max is easy to spot.

I would vote to use only 48MP Heif Max if the space is no object. 2.6mb vs 5.2mb simply means that the owners of 128GB Pros who don't pay for icloud will get to shoot exactly 2x less pictures until they get full.
 

Benz63amg

macrumors 601
Oct 17, 2010
4,393
914
From the article:

To me this alone sounds like a reason to use 48MP Heif Max.
From the dpreview thread, please find the pic of the lighthouse on the shore: in the very dark areas under the roof, bricks indeed don't look black on 24MP due to higher dynamic range, while Heif Max has that space almost blacked out. But overall the difference in dynamic range is minimal and need to look for it with a magnifier, while sharpness of 48MP Heif Max is easy to spot.

I would vote to use only 48MP Heif Max if the space is no object. 2.6mb vs 5.2mb simply means that the owners of 128GB Pros who don't pay for icloud will get to shoot exactly 2x less pictures until they get full.
Thanks for the input, i just read the two articles posted here in the thread and i ended up reverting back to use the default 24mp mode on my iPhone 15 Pro as opposed to 48 mp HEIF. All the stuff Jon McCormack said in that article just convinced me that using the 48 mp mode doesn't add much if anything at all and makes taking the photo slower (shutter speed)
 

ctjack

macrumors 68000
Mar 8, 2020
1,565
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Thanks for the input, i just read the two articles posted here in the thread and i ended up reverting back to use the default 24mp mode on my iPhone 15 Pro as opposed to 48 mp HEIF. All the stuff Jon McCormack said in that article just convinced me that using the 48 mp mode doesn't add much if anything at all and makes taking the photo slower (shutter speed)
I think i abandoned 48MP because it was slow at the beginning. Right now with ios updates, it seems to be working faster than i can recall back in september. Anyways tad slower than 24MP of course.
 

MrSimmo

macrumors member
Oct 17, 2014
58
31
Hi all, sorry to dig up an old thread but -

Ignoring file sizes, processing times etc - just the pure output:

Does anyone know what the differences in the image processing pipeline is between HEIF 24mp and HEIF MAX 48mp?
 

bluedoggiant

macrumors 68030
Jul 13, 2007
2,634
94
MD & ATL,GA
Hi all, sorry to dig up an old thread but -

Ignoring file sizes, processing times etc - just the pure output:

Does anyone know what the differences in the image processing pipeline is between HEIF 24mp and HEIF MAX 48mp?
Some info in OP.

I am noticing HEIF Max photos are not as exposed as well. Colors tend to look better on the 24MP photos.

Still experimenting with ideal HEIF Max situation but its probably only in 24mm.
 
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