Log Cam App Review: 4K ProRes on Any iPhone Without an SSD
Apple has a simple answer to anyone who wants professional video quality from an iPhone: just buy the latest hardware!
Want to shoot ProRes internally? Only on certain models.
Apple Log video? iPhone 15 Pro and above.
4K open gate without an external SSD strapped to the bottom? That's an iPhone 17 Pro exclusive!
And by the time you've bought the phone and the SSD, you're looking at around $3,000 AUD.
A solo developer just made that argument a lot harder to defend.
The app is called Log Cam. It's an iPhone video app that bypasses Apple's entire video pipeline and unlocks:
- 4K open gate (internal)
- ProRes
- HEVC 4:4:4
- and true Apple Log 2, Arri Log C and Sony S-Log
on iPhones going back to the XS — recorded internally, no SSD required.
I've been testing it for several weeks across three phones: an iPhone 13 Mini bought second-hand for $300 AUD, my iPhone 14 Pro, and my iPhone 17 Pro. I ran blind tests on the footage with a group of experienced filmmakers and videographers. Every single person preferred the video from the $300 iPhone 13 Mini — and every single one assumed it was the 17 Pro.
This article covers exactly what Log Cam does, how it's technically possible, what the footage actually looks like across three phones, and where the app's real limits are.
What Is Log Cam?
Log Cam is an iPhone video app that does something no other camera app on the App Store currently does. Every other video app on iOS — including Blackmagic Camera — works from the video streams Apple makes available to third-party developers: a Rec.709 stream, a Rec.2020 stream, and on the 15, 16, and 17 Pro, an Apple Log stream.
By the time any app receives those streams, Apple's image signal processing (ISP) pipeline has already done its work. Noise reduction, sharpening, saturation adjustments, contrast, and dynamic tone mapping are all baked into the video before any third-party app ever sees a single frame. They cannot be removed.
Log Cam doesn't work from those streams at all. It bypasses Apple's video pipeline entirely and taps directly into the RAW photo stream — the same stream the camera uses to capture RAW DNG stills — before any ISP processing has touched the image. It then transcodes that RAW data in real time into ProRes or HEVC 4:4:4 at 24, 25, or 30 frames per second, in a true log colour profile of your choosing: Apple Log 2, Arri Log C, or Sony S-Log.
The result is a completely unprocessed image — no noise reduction, no sharpening, no tone mapping, no saturation cranked to 11. Just clean, flat, graded-ready video that looks and behaves like footage from a dedicated cinema camera, because in terms of what's been done to it before you open it in post, almost nothing has.
It also supports LUTs applied to the viewfinder only, so you can monitor with a grade while recording flat — or bake a LUT directly into the recorded file for footage that's ready to share straight out of camera.
Note: Log Cam is a companion app to RAW Cam — a separate app from the same developer that records CinemaDNG video frames. They are two distinct tools for two different workflows. Log Cam is for log video in ProRes and HEVC. RAW Cam is for maximum raw flexibility in CinemaDNG. Both are worth knowing about — this review covers Log Cam specifically.
What Log Cam Unlocks on Older iPhones
Because Log Cam sources its image from the RAW photo stream rather than Apple's video pipeline, it isn't bound by the codec and resolution restrictions Apple enforces on that pipeline. That means it can offer formats and capabilities that Apple has never officially permitted on older hardware:
- 4K open gate video internally — on iPhones where Apple has never allowed it
- ProRes video to internal storage — no external SSD required
- HEVC 4:4:4 — full chroma data per pixel, on par with ProRes grading latitude, at a fraction of the file size
- True Apple Log 2, Arri Log C, and Sony S-Log — on devices that have never supported Apple's official Log video stream
- Log video on iPhone XS and later — not just Pro models
- LUT monitoring and recording — apply LUTs to the viewfinder or bake them directly into the recorded file
Apple's video restrictions are not entirely determined by hardware. Log Cam proves it. A five-year-old iPhone 13 Mini is physically capable of far more than Apple has ever permitted through its official apps and APIs — and this is the first app to demonstrate that clearly.
How Does the Footage Actually Compare?
iPhone 13 Mini ($300 AUD) vs iPhone 17 Pro ($3,000 AUD)
I picked up an iPhone 13 Mini on Facebook Marketplace for $300 AUD and put it directly against my iPhone 17 Pro shooting ProRes RAW in Blackmagic Camera — a setup that costs around $3,000 AUD once you factor in the external SSD Apple requires for that format. Both phones filmed the same scenes in 4K open gate in Apple Log 2.
In some shots, I actually prefer the video from the $300 phone. It's slightly softer — which reads as more natural to my eye — and the colour is consistently richer. I graded both with identical settings in DaVinci Resolve: a CST node converting Apple Log 2 to Arri Log C, an exposure match node, and Filmbox Pro film emulation on the output node. The only camera-specific adjustment was boosting saturation on the 17 Pro's ProRes RAW footage to 75 in Resolve — it comes out noticeably desaturated compared to what Log Cam produces.
In the blind test, every single person who viewed the footage preferred the Log Cam video from the iPhone 13 Mini. And every single one incorrectly identified it as the iPhone 17 Pro.
iPhone 14 Pro: HEVC 4:4:4 vs ProRes RAW
My iPhone 14 Pro produced a similar result. Recording in Log Cam in HEVC 4:4:4 — a codec I genuinely didn't know existed on any iPhone before testing this app — the video has exceptional colour information, tiny file sizes compared to ProRes, needs no SSD, and grades beautifully in DaVinci Resolve and LumaFusion. For these shots I graded both the 14 Pro and the 17 Pro using the same GLOAT LUTs for Apple Log 2. Once again I preferred the Log Cam image over ProRes RAW from the Blackmagic Camera app on the 17 Pro — and that preference was unanimous in blind testing.
For a lot of real-world video workflows, HEVC 4:4:4 is genuinely more practical than ProRes RAW. ProRes RAW demands fast external storage, specialist debayering software, and produces enormous files that eat through drives quickly — and SSD prices aren't getting any cheaper. HEVC 4:4:4 gives you the colour latitude you need for serious grading work at a fraction of the storage cost, shooting all day to internal storage.
iPhone 17 Pro: Log Cam vs Blackmagic Camera on the Same Device
Even on the 17 Pro itself, Log Cam offers something Blackmagic Camera doesn't: freedom from Apple Log. With Log Cam you can record natively in Arri Log C or Sony S-Log, which means grading with the same LUTs you already own for other cameras. Camera-matching an iPhone to a traditional cinema camera — something that's always required workarounds — becomes genuinely straightforward.
For this test I shot in Arri Log C and applied a Filmbox Pro Kodak Vision 3 emulation in post, treating the iPhone as an Arri Alexa source. The results are some of the most cinematic iPhone video I've produced. Dramatically smaller files than ProRes RAW, no SSD required, and a level of log profile flexibility that Blackmagic Camera simply doesn't offer.
Across all three phones — iPhone 13 Mini, 14 Pro, and 17 Pro — I prefer the Log Cam footage. And the reason comes down to something counterintuitive: it's not what Log Cam adds to the image. It's what it takes away.
Why Does Log Cam Video Look Better? It's What It Removes.
Apple's ISP processing isn't subtle. Every video stream available to third-party apps — including the Apple Log stream on the 15, 16, and 17 Pro — has already been through noise reduction, sharpening, saturation boosting, contrast adjustments, and dynamic tone mapping before any app sees a single frame. Apple Log dials this back and disables dynamic tone mapping, which is why it looks flatter and grades better than standard video. But noise reduction still runs in Apple Log. It still runs in ProRes RAW. It is always running.
When Log Cam pulls directly from the RAW photo stream before any of this processing occurs, the image is cleaner, more natural, and more faithful to what the sensor actually captured. It behaves more like footage from a traditional camera — because traditional cameras don't apply noise reduction before they hand you the file.
And this is where Log Cam reveals something important that Apple would rather you didn't think too hard about: once you strip away the ISP processing and the artificial software restrictions, it becomes clear that while each new iPhone generation brings genuine CPU and GPU gains, the actual camera sensors and optics have not advanced at the same rate. The image quality gap most people assume exists between a 2021 iPhone and a 2025 iPhone is largely a software processing gap — not a hardware gap. Which is exactly why a $300 iPhone 13 Mini can compete on pure image quality with a $3,000 iPhone 17 Pro video setup. The sensor isn't the bottleneck. The software is.
It's also worth being direct about the other apps that claim to offer log video and 4K open gate on older iPhones. They don't do what Log Cam does. They take Apple's heavily processed Rec.2020 video stream, apply a filter to dial back contrast and saturation, and call the result log. The ISP processing is still fully intact underneath — and no filter removes it. Log Cam is the first and currently only app on iOS that actually bypasses the pipeline rather than dressing up its output.
The Real Limitations — And They're Significant
Log Cam is not for every iPhone video workflow, and it's worth being direct about why.
Transcoding a continuous RAW photo stream in real time — up to 30 full RAW frames every second — is an extraordinary amount of processing to ask of a phone. That thermal and computational load creates hard constraints that aren't going away:
- No autofocus during recording — focus must be set before you hit record and cannot be adjusted mid-clip
- No electronic image stabilisation
- No high frame rates — 24, 25, and 30fps only
- Shorter continuous record times than standard video capture due to thermal load
- Less stable capture experience overall compared to conventional video apps
If your video work involves run-and-gun shooting, continuous autofocus, slow motion, or long uninterrupted takes — Log Cam is not the right tool. Blackmagic Camera, Kino, or Final Cut Camera will serve those workflows significantly better.
But for controlled, deliberate video production — interviews, short films, commercial and product work, landscape cinematography — these constraints are entirely manageable. You lock focus, set your exposure, hit record, and get a video image that no other iPhone app can currently match.
Who Should Use Log Cam?
- Owners of older iPhones (12 and above) who have been locked out of Apple Log video and ProRes — Log Cam unlocks both, internally, right now
- iPhone 17 Pro video shooters who want smaller files, log profile flexibility beyond Apple Log, and no SSD dependency
- Filmmakers who need to camera-match their iPhone video to an Arri, Sony, or other cinema camera — native Arri Log C and S-Log support makes this genuinely straightforward
- Anyone who wants the best possible video image from their existing iPhone hardware in controlled shooting conditions
If you own an iPhone 12 or later, shoot deliberate and controlled video, and want the best possible image from the hardware already in your pocket — Log Cam is probably the most significant iPhone video quality upgrade available to you right now, without spending a single dollar on new gear.
Verdict
A $300 iPhone 13 Mini against a $3,000 iPhone 17 Pro video setup. Same scene. Same grade. Blind tested by a group of experienced filmmakers. The $300 phone won — unanimously, every time, with every viewer incorrectly identifying it as the more expensive camera.
The 17 Pro's genuine advantages over older iPhones are better thermals, a faster chip for sustained video recording performance, and an incrementally improved sensor. But the image quality gap most people assume justifies the upgrade is largely a software processing gap — and Log Cam closes it by removing the software.
Once you shoot with a clean, unprocessed log image from an older iPhone, it's very hard to go back to the over-processed look Apple bakes into even its best video modes. The gap between a $300 phone and a $3,000 setup has never been smaller — and for the first time, an app is the reason why.
Log Cam is linked in the pinned comment on the YouTube video above, along with a full in-depth tutorial on settings, capture, and grading workflow if you want to go deeper into the complete pipeline.
Have you tested Log Cam on your iPhone? Leave a comment below — especially if you're running it on an older device. I'd love to know what you're getting out of it.
