Still Image Performance

Now that we’ve discussed the basics of the iPhone 7 and 7 Plus camera we can start to get into how it actually performs relative to the iPhone 6s and 6s Plus as well the current competition on the market. While we normally run an ISO test to check spatial resolution this has been deferred to a future portion of the review. Unfortunately we don't really have the ability to do time-invariant testing here in a serious manner to the same extent that an OEM might, so we're effectively limited to tripod comparisons of real-world subjects.

Daytime Photography

In this kind of scenario the iPhone 7 and 7 Plus are directly comparable in the 1x mode. Because the primary camera has OIS and the secondary camera doesn't, it looks like it's fairly difficult for Apple to do an exact pixel to pixel correlation to the extent that the two outputs can be merged into a single image. As a result it's fairly obvious that the 1x mode has less detail than the 2x mode here. I can really see how this would be useful in general, as the longer focal length means more detail relative to anything else on the market but also allows for more interesting framing. The 1x camera is identical to the iPhone 7, and here it's definitely noticeable that the iPhone 7 can't quite keep up with the Galaxy S7 or HTC 10 in sheer detail in these kinds of shots.

Daytime Photography 2

In the interest of trying to not just take a single landscape photo and declare it to be a representative sample for all photos ever taken of all time with a smartphone in daytime conditions, I went ahead and took another sample shot of a mostly static subject. Here the iPhone 7 Plus in 1x mode is pretty much comparable to the iPhone 6s and Galaxy S7 as far as detail goes. I would argue that the HTC 10 captures slightly more detail at the center, but this probably isn't a surprise when the sensor is significantly larger. It's also worth noting that the iPhone 7 Plus manages to show better dynamic range here as the highlights off to the right retain more color detail than most devices tested and the shadows contain more detail that what is found on the Galaxy S7 or the iPhone 6s Plus. Once again, at 2x the iPhone 7 Plus is really just ridiculously good at capturing the sheer amount of detail that the tree has which isn't really captured by the 1x mode as most of the detail has to be blurred away to avoid aliasing. It's truly impressive how the iPhone 7 and 7 Plus are actually capable of keeping up with the Galaxy S7 despite a smaller sensor, and we're really seeing the product of Apple's ISP lead here.

Low Light Photography 1

It probably is worth mentioning here that in low light the iPhone 7 Plus doesn't actually use the secondary camera at all due to its smaller aperture and lack of image stabilization, which means that the iPhone 7 and 7 Plus are identical in low light performance. Interestingly enough detail is fairly comparable between the iPhone 6s Plus and iPhones 7, with some minor adjustment to favor more noise reduction. I'm inclined to say that the Galaxy S7 and iPhone 7 are basically comparable here but the oversharpening on the Galaxy S7 remains fairly obvious and I would expect it to outperform in detail here but it's just comparable to the iPhone 7 due to the rather smeary noise reduction. The HTC 10 is the clear winner here as far as detail goes but both the Galaxy S7 and HTC 10 really oversaturate the green shrubs while the iPhone 7 is much closer to what it should actually be. The oversaturated, smeary look that seems to dominate the Galaxy S7 output continues to be seriously off-putting for me.

Low Light Photography 2

It's interesting to see how Apple's noise and noise reduction seems to have changed from the 6 to 6s to 7 here. Detail is functionality identical but the iPhone 7 and 7 Plus clearly handle shadows better here as there's more detail and noise is controlled noticeably better with better detail and less visible noise. It's really impressive what Apple's processing is able to pull off here when sensor size and sensor technology hasn't really advanced that much from the iPhone 6s to iPhone 7. This is especially obvious when compared to the Galaxy S7, which has comparable overall detail but the noise reduction used is much more splotchy and has obvious oversharpening if you look too closely. Again, relative to the HTC 10 the sensor size deficit is very obvious here if you try to read the text on the trash cans, but the HTC 10's gamma and noise reduction algorithms are just not competitive in the shadows and it's obvious that there are uncorrected optical distortions in the light flares. The HTC 10 also tends to feel like it has a filter over the entire photo that makes it look a little soft compared to the iPhone 7 even if it does have better detail in some parts of the frame.

Low Light Photography 3

For whatever reason this scene always seems to at least mildly challenging. Here we can really start to see the softness that I'm talking about with the HTC 10, as the white pillar "bleeds" a bit into the brick wall exterior of Knudsen Hall. Detail on the iPhone 7 and 7 Plus remains comparable to the iPhone 6s Plus, but with noticeably less noise. The Galaxy S7 manages to deliver similar levels of detail to the iPhone 7, but it definitely oversaturates the red brick colors which might be appealing but really isn't accurate when you look at the RAW reference. The noise reduction on the Galaxy S7 is noticeably splotchier here and gets much worse if you look at the top right quarter of the photo. I would actually say the iPhone 7 outperforms just about everything here but the LG G5, which has better detail but a really strange color rendition.

Overall, the iPhone 7 camera is impressive and I would argue is holistically a better camera for still photos than the Galaxy S7 on the basis of more accurate color rendition, cleaner noise reduction, and lack of aggressive sharpening. It may not be as lightning fast as the Galaxy S7 or have as many party tricks, but what it does have is extremely well executed. The HTC 10 is definitely better than the iPhone 7 at delivering sheer detail when only comparing the 28mm focal length camera, but the post-processing has a tendency to bleed colors in low light which sometimes causes the images to look a bit soft. In daytime the iPhone 7 Plus' 56mm equivalent camera helps to keep it well ahead of the curve when it comes to sheer detail and really is a revelatory experience after years of using smartphone cameras that have focal lengths as short as 22mm and can't really capture what the eye sees. However, in low light the sensor size deficit really starts to become obvious. I suspect the Pixel and Pixel XL will make this especially clear. If there's really no room to go up the ladder in sensor size, Apple really needs to consider some radical approaches to improving sensor sensitivity such as RWB pixel layouts or using the dual camera for an oversampling scheme.

Camera Architecture and UX Video Performance
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  • solipsism - Monday, October 10, 2016 - link

    The 3" adapter has a very firm fit on your 3.5mm headphones; more so than your typical headphone jack on a smartphone. I'm sure this is intentional to help keep it in place.

    As mentioned in the article, wireless is the future, and while I've been using BT headphones for years now, my current ones (Bluez Aftershockz 2) finally broke so I'm using wired headphones until I the other headphones with Apple's W1 chip hit the market. I'm leaning toward the BeatsX as I prefer in-ear, and the connected cable, but I'm willing to give the AirPods a chance since so many are saying they are more comfortable than their included EarPods, which I find to be uncomfortable.

    I've noticed that my wired headphone cable doesn't get tangled as easily and is easier to plug into my iPhone. I attribute this to both the slightly extra weight and thickness of the connector. I'd rather not be wired at all, but the adapter certainly hasn't been an issue. Since I only charge my phone once a day or every other day, this repeated claim that everyone needs to charge and listen to wired headphones as the same time escapes me. I'm guessing it's one of those invented problems only a few people actually need
    Reply
  • greyhulk - Monday, October 10, 2016 - link

    I hope you address thermal throttling in the deep dive. That's what I'm most interested in with the new A10. Reply
  • SydneyBlue120d - Monday, October 10, 2016 - link

    While I really hope to see AV1 2160p60 with multichannel audio encoding with iPhone 8, I'd like to read a test comparison between Intel and Qualcomm modem, especially with Europe networks :) Thanks a lot. Reply
  • i4mt3hwin - Monday, October 10, 2016 - link

    "Overall, the iPhone 7 and 7 Plus remain the best phones on the market for video capture. Strange issues with Snapdragon 820 video encode blocks mean that all Snapdragon 820 devices are just barely passable for video capture."

    I don't recall seeing this anywhere? I Know the OP3 article mentioned that the video was blocky - but I don't remember it linking that to the 820 - just a OP3 implementation issue? Does this mean the Pixel is going to experience similar issues?
    Reply
  • grayson_carr - Monday, October 10, 2016 - link

    I can confirm that my S7 Edge has this issue, and it's bad. When I first got it, I recorded a couple 4k videos while hiking along an oceanside trail and the blocky artifacts in the water and sky looked so crappy that I just never recorded videos with it again. It was technically 4k video, but it looked more like a 360p YouTube stream with the amount of blockiness, especially when panning up and down. Reply
  • lolipopman - Tuesday, October 11, 2016 - link

    Why was this issue not explored by Samsung? I'm pretty sure it's not common or else it would've been known. Reply
  • lilmoe - Monday, October 10, 2016 - link

    You do realize that the shutter speed on the iPhone's night images is twice as long as the others using lower ISO values, right?

    You call this "impressive"? I highly recommend a primer in photography.
    Reply
  • JoshHo - Monday, October 10, 2016 - link

    The exposure time of 1/4s is not indicative of all exposures. I would reference the iPhone 6s and 6s Plus reviews to better understand how Apple handles low light to avoid motion blur despite long exposures. Reply
  • lilmoe - Monday, October 10, 2016 - link

    Yea, I've seen that review.

    Might I also suggest a primer in videography. Here's how a the video review portion should look like, and what it should include/test:

    https://www.youtube.com/watch?v=4YCvLW2ySr0

    Listen, I don't mean to insult you or anything, but you need to know that your criteria is fundamentally flawed. In addition to the objective truth that Samsung, and others, have the superior video (and audio), their image processing is what PEOPLE WANT. You give customers what they want, not what you think is best, especially for a mainstream product (ie: non-professional). If you want to compare sensor/lens quality, you compare RAW images using the same settings (but you didn't, for reasons).

    Smartphone photography is about USABLE images/footage. You just don't apply the same criteria you do when reviewing a DSLR/DSLM.

    Stop marketing "true colors" (which aren't exactly true, btw) for a crowd of users that apply filters to everything they post online.

    Admit, correct and move on.
    Reply
  • grayson_carr - Tuesday, October 11, 2016 - link

    Samsung? Superior video? LMAO. Go home. You're drunk. I almost took you seriously until you said that out loud. -Galaxy S7 Edge owner Reply

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