heliographe

Yes, that makes sense to me. Black and white film is a very flexible medium - you can make very different prints from the same negative, it has lots of latitude to play with the contrast, dodge/burn, etc, so there’s not necessarily a single “best” interpretation.

And as you point out, at capture time you can use color filters to affect the image; processing too can lead to fairly different results based on what developer you use.

This is in contrast to color film, which I find to be much more rigid and narrow in how it’s meant to look and be processed; one could argue there’s much less range for interpretation from negative to final image (especially so with slide film, which completely falls apart if it’s ever so slightly over/under exposed).

I now have a small library of simulated materials: watercolor washes, dry brush strokes, felt-tip pens, cracked glaze, pencil fills. None of them are physically accurate. I’m not simulating fluid dynamics or anything like that, I don’t need to. They’re impressions, heuristics that capture enough of the character of a material to be convincing and evoke an emotion.

I find this to be a key insight. I've been working on a black-and-white film app for a while now (it's on my website in profile if you're curious), and in the early stages I spent time poring over academic papers that claim to build an actual physical model of how silver halide emulsions react to light.

I quickly realized this was a dead end because 1) they were horribly inefficient (it's not uncommon for photographers to have 50-100MP photos these days, and I don't want my emulator to take several minutes to preview/export a full image), and 2) the result didn't even look that good/close to actual film in the end (sometimes to the point where I wondered if the authors actually looked at real film, rather than get lost into their own physical/mathematical model of how film "should behave").

Forgetting the physics for a moment, and focusing instead on what things look and feel like, and how that can be closely approximated with real time computer graphics approach, yielded far better results.

Of course the physics can sometimes shed some light on why something is missing from your results, and give you vocabulary for the mechanics of it, but that doesn't mean you should try to emulate it accurately.

I read this interview with spktra/Josh Fagin and how he worked on digitally recreating how light scatters through animation cels, which creates a certain effect that is missing from digital animation - and it was validating to read a similar insight:

"The key isn’t simulating the science perfectly, but training your eye to recognize the character of analog light through film, so you can recreate the feeling of it."

https://animationobsessive.substack.com/p/dangerous-light

You absolutely can:

https://mastodon.social/@heliographe_studio/1156653713048409...

(taken with BayerCam.app, not Halide, but Halide can capture the same raw Bayer data)

It's not an amazing photo by any means. But it is a photograph of the moon - the seas are all well delineated, Copernicus/Kepler/Aristarchus/Grimaldi are visible/recognizable.

A test that smartphones did not pass a few years ago.

I always found this UI pattern a bit odd, because there just aren't that many situations where you want to compare the left side of image A and the right side of image B.

I see it a lot in photography, to show before/after processing - but what you want to be able to quickly compare are the same part of an image with and without the processing applied.

One of the photography tools I make is a LUT viewer/converter - and while I didn't have the slider at first, I guess it's standard enough at this point that people asked for it and I added it.

But I made two additions to it that make it more useful IMO:

- have labels on the left/right top corners, so it's immediately clear which version of the image you're looking at

- click and hold on the image to preview the full unprocessed version; release to revert to the view. That makes it easy to quickly compare the two versions of the same spot of a photo. (similar to what you suggest, but non-latching)

I have a video of it in action here:

https://lutlab.com/#viewer-photo

Done, cheers for the heads up.

Mastodon: https://mastodon.social/@heliographe_studio/1158908195095453...

Here is the same post on Mastodon: https://mastodon.social/@heliographe_studio/1158908195095453...

I publish all my posts on Threads/X/Bluesky/Mastodon because I have to meet my customers where they are, but Mastodon is the preferred platform that I point everyone to for open standards reasons.

(if a moderator doesn't mind updating the link, that'd be great)

Oh hi everyone! So funny to see how my quippy little tweet blew up the last few days on all the platforms (much more than when I share actual things I make, to my great dismay - if you're an artist/photographer, check out my apps & tools: https://heliographe.studio).

There's lots of interesting discussions to be had around what makes a great icon (but social media platforms aren't the places to have those deep conversations). For example the original Mac HIG says that an app icon should:

- clearly represent the document the application creates

- use graphics that convey meaning about what your application does

(https://www.threads.com/@heliographe.studio/post/DTehlciE3wY)

The first point might be a little outdated, as we tend to live in a "post-document" world, especially on mobile. The second is broad enough that it holds up, and under that lens it doesn't seem that an image of a pen/stylus is most appropriate for a word processor app.

By that metric, the Mavericks/Catalina (5th and 6th on the linked image) seem like the strongest icons. The Big Sur (4th) one isn't too bad given the "must fit in a squircle constraints" that came with it, but it starts to feel less like a word processor app icon - it could as easily be an icon for TextEdit/Notes.

The most recent 3 are very hard to defend - the main thing they have going for them is that because they are simpler and monochromatic, they fit more easily within a broader design system/icon family. Even then, the simpler shape doesn't make them more legible - a number of people have told me they thought it was a bandaid at first, or maybe something terminal-related for the orange on black one. The "line" under the pencil (or is it a shadow?) on the most recent one is almost as thick as the pencil itself, and blends with it because gestalt theory.

I agree that the 7th one (original ink bottle) has a few issues that don't necessarily make it the best choice for an icon - but dang, the level of craft that goes into it makes it an instant classic for me. And it does retain a fairly distinct, legible shape that still makes it a solid icon even if the detail gets lost at smaller sizes.

Icons need to be quickly recognizable, but at the same time an icon is not a glyph - and illustrational approach do have their place. Especially on devices with larger screens where they are going to appear quite large in most contexts.

The big elephant in the room with all this is that icons 5/6/7 clearly take more craft skill to execute than icons 1/2/3, and Apple used to be the absolute reference - no debate possible - when it came to these matters. As a long time software designer (and former Apple designer myself through the 2010s, although I was on the hardware interaction design side, and not making icons), it is sad that this is no longer true.

Working on developing a suite of apps around photography, from cameras to editors and utilities.

https://heliographe.studio

The goal is lightweight, composable tools with clean interfaces that respect user agency and privacy, provide technical clarity, and make you a better photographer by encouraging mastery over your tools and offering new ways to approach picture making. Also broadly honoring the (almost) 2 century old history of the craft and drawing inspiration from pre-digital processes and approaches.

Got a number of updates to existing apps and new ones in the works, I’m excited for the full long term vision I have that I plan to sum up in an essay at some point.

Currently Apple platforms only but the plan is also to break out of that down the line.

If you’ve gone all the way to shooting medium format and learning how to develop film, I can’t help but encourage you to get into printing black and white as well.

(color is IMO less interesting - more finicky, less creative latitude)

It’s a minimal investment of time & money (even simpler if you have a community darkroom near you - there are more than you might think!), and it’s both more creatively rewarding as a process than what you get working digitally, and for IMO a better result (you need a really high quality printer to match what standard b&w printing gives you).

Prints also make for great gifts - people just aren’t used to seeing 8x10 printed portraits anymore, and I’ve had friends/family members moved to tears when presented with a framed print of their family.

Oh and there’s also always large format ;)

Cheers! Got an update coming out soon for that one, it's actually the one that makes the least money haha. I think it's way too nerdy and weird to ever hope to reach a broad audience even amongst photographers, unlike the others that are more approachable.

But I still use it on a weekly basis myself so I just can't stop refining it. I've been obsessed with the trichromatic process for 10+ years, ever since I discovered the work of Prokudin Gorsky (even built a website about the process and history: https://trichromy.com, due for a refresh some time). Such a clever approach to color photography that results in such a unique aesthetic.

I'm quite aware that doing things my way isn't commercially viable

Depends what you mean by “commercially viable”. I’ve been making high quality products as an independent software developer in the photography space for a bit over 2 years now, and while I’m nowhere near my former big tech company salary, I still make more than needed to pay for life every month (not living an extravagant lifestyle somewhere with ridiculous cost of living does help).

And I still feel like I’m far from having reached full potential in my addressable market and the kind of products I want to build - I have indie developer friends who are pretty close to their former big tech salary, after 5+ years.

So, despair not :)

Yes! As a software developer in the photography space, we are deeply in need of projects like this.

The photography world is mired in proprietary software/ formats, and locked down hardware; and while it has always been true that a digital camera is “just” a computer, now more than ever it is painful just how limited and archaic on-board camera software is when compared to what we’ve grown accustomed to in the mobile phone era.

If I compare photography to another creative discipline I am somewhat familiar with, music production - the latter has way more open software/hardware initiatives, and freedom of not having to tether yourself to large, slow, user-abusing companies when choosing gear to work with.

Long live Magic Lantern!

Yes, that matches my observations. I develop photography software and in early versions of iOS 18, sometimes saving a large image to the camera roll would fail because the daemon in charge of carrying out the photo library transactions would get killed due to low memory. This only happened on devices that ran Apple intelligence. Fortunately they seemed to have fixed that bug around 18.1 or 18.2 if I recall.

Working on indie photography software (iOS/macOS for the time being): https://heliographe.studio

My most recent release is a camera app dedicated to RAW photography, which focuses on being fast & lightweight & technically precise - I wrote the website to be both a user’s manual and a crash course in photography concepts: https://bayercam.app

I’m working on my next app release, which I’m pretty excited about!

Yes, making money on iOS is an uphill climb, many times more so if you’re not playing the TikTok ads and subscription model.

I’ve been making iOS software independently for almost 2 years now (https://heliographe.studio) and am about ramen profitable.

A few notes in case OP (or anyone interested in making some money in the App Store) is reading:

- you have to make the app free to download, and quickly demonstrate value then show a paywall if you want any purchases. Paid upfront just does not work unless you’re an already recognized product.

I had some apps that were paid upfront, and would mostly get $0 days. Switching to free to download immediately brought me to a slow but steady trickle of daily downloads, and from there you just have to work on your conversion rate.

- but that's still going to be pretty low, if you want any meaningful user acquisition, you're going to have to go look for the kind of people who might be interested in your product. The broader your potential audience is, the harder that's going to be (but that's why TikTok ads can work so well). In my case, choosing to focus on a somewhat niche area (tools for photography) is helpful; there's a strong photography community going on Threads and regularly posting on there yields good results (for now...)

- $2.99 is dramatically underselling yourself, especially if you offer a quality product that you put time to craft to your standards and has no tracking, no subscription, no ads, etc. You should play with pricing to see what the sweet spot in terms of conversion is, but in my experience it's always worth it to start at least at $4.99/$7.99 for these sort of utility apps. Of course, the design of your funnel/paywall will make a huge difference (ie you'll likely sell more of an app marked as $4.99 at 50% off, than just $4.99)

- learn about what makes for good App Store screenshots, descriptions, how keywords work, etc. Ariel from App Figures has some good videos on YouTube about what they see and what seems to work based on their data.

The days where you could make a little app, chuck it on the App Store for $.99, and have it just blow up are well over. If you want to make any money on the App Store (even if to just pay back for your Apple Developer membership), you have to put as much effort, if not more, in the marketing and promotion of your product than you put in the design & development of it. It's a grind for sure — and don't count on Apple to help you in any way (by and large they seemed more interested to promote games and dating apps with $49.99/mo subscriptions than small indies doing interesting things).

Good luck! Eager to try your app :)

It will capture the depth map and generate the semantic mattes (except in some edge cases) no matter the subject if you explicitly set the camera in Portrait mode, which is how I would guess the plant photo from the article was captured.

My previous comment was about the default Photo mode.

If you have a recent iPhone (iPhone 15 or above iirc) try it yourself - taking a photo of a regular object in the standard Photo mode won’t yield a depth map, but one of a person or pet will. Any photo taken from the Portrait mode will yield a depth map.

You can find out more about this feature by googling “iPhone auto portrait mode”.

Apple’s documentation is less helpful with the terminology; they call it “Apply the portrait effect to photos taken in Photo mode”

https://support.apple.com/guide/iphone/edit-portrait-mode-ph...

but apparently recent iPhones capture them for standard photos as well.

Yes, they will capture them from the main photo mode if there’s a subject (human or pet) in the scene.

I made an app that used the depth maps and portrait effects mattes from Portraits for some creative filters. It was pretty fun, but it's no longer available

What was your app called? Is there any video of it available anywhere? Would be curious to see it!

I also made a little tool, Matte Viewer, as part of my photo tool series - but it’s just for viewing/exporting them, no effects bundled:

https://apps.apple.com/us/app/matte-viewer/id6476831058

Yes, those depth maps + semantic maps are pretty fun to look at - and if you load them into a program like TouchDesigner (or Blender or Cinema 4D whatever else you want) you can make some cool little depth effects with your photos. Or you can use them for photographic processing (which is what Apple uses them for, ultimately)

As another commenter pointed out, they used to be captured only in Portrait mode, but on recent iPhones they get captured automatically pretty much whenever a subject (human or pet) is detected in the scene.

I make photography apps & tools (https://heliographe.net), and one of the tools I built, Matte Viewer, is specifically for viewing & exporting them: https://apps.apple.com/us/app/matte-viewer/id6476831058

I just shipped a camera app for iPhone dedicated to Bayer RAW capture (that's the true, unprocessed sensor output of your device - not Apple's ProRAW which is already demosaic'd and has noise reduction, etc).

https://bayercam.app

I had fun with the interface - it's themeable, and inspired by classic cameras: lets you quickly switch between full auto/half auto/full manual modes with dedicated dials.

Going to add more features in the coming months, but the #1 focus is keeping it super simple and blazing fast.

Given that virtually all processing pipelines these days stack multiple shots to create a photo, as far as I'm aware this is the only way of getting a "traditional" single-exposure photo on iPhone, where the shutter speed is actually meaningful.

There are other camera apps that support Bayer RAW capture, but those support a bunch of other formats, and you probably don't want Bayer RAW for most of your shots anyways, so for my own workflow it's better to have a dedicated app that I can launch really quickly rather than tap around in menus.

I’ve been making photography software as an indie developer for a bit over a year now:

https://heliographe.net

A few released apps for now that are iOS/macOS, with some exciting more things in the pipeline.

If you’re a photographer who has frustrations with current mainstream photography software (whether capture/edit/publishing), I’d also love to hear from you - you can find me as Héliographe on (mastodon,bluesky,threads,x) or just email me at contact@heliographe.net :)

I was skeptical too - friends encouraged me to post my latest project there, a panoramic camera app I made entirely for my own satisfaction (I certainly used none of the “growth hacking” best practices like ads/tracking/upsell popup on first launch/excessive subscription that counts on people forgetting to turn off auto renew).

I posted it on Product Hunt and got a good response, made it to the front page even (link if anyone’s curious: https://www.producthunt.com/products/65x24#65x24)

I don’t doubt that there’s a broader metagame that can be hacked, but in my limited experience legitimate passion projects still have a shot there.

Yes, it’s directly based on the trichromatic photographic process, which I learned about reading an article about Gorsky.

And yeah, it’s super interesting how when a new recording technology is created, we seek to avoid its limitations; but later on, those limitations get embraced on their own merits for aesthetic value!

I'm making photography software: https://heliographe.net

Right now my work is Apple platforms only (revenue through App Store), but I'm actively looking into ways to expand to other platforms.

As a long time photographer, my philosophy is to make tools that are useful to me first and foremost, and to build smaller scope things that compose well (UNIX philosophy). I've got some exciting new things planned for 2025.

These are all side projects right now, as my official full time occupation is Japanese language school student (I moved to Japan at the end of 2023 year after almost 15 years in SF Bay Area tech companies/startups, becoming a full time student at 34 surrounded by 21 year olds from a very different background has been an interesting experience on its own).

Since the revenue has been increasing the last few months, I incorporated to keep things organized, but for now these projects are still "side projects". It'd be cool if I could justify financially to do this full time after I finish language school in 2026.

+1 for Acorn, and also check out Retrobatch by the same developer - it's a super powerful image processing environment - the way I'd describe it is like having a visual command line dedicated to image processing (but better because it's visual and you don't have to read man pages).

Great work all around by Gus Mueller.

It’s supported, but unfortunately no 3rd party APIs yet. It’s a bit surprising they wouldn’t ship them on launch to encourage adoption.

I make photography/camera apps and would like to support JPEG XL natively (without having to rely on 3rd party code) so I hope it’s something they add soon!

Oh weird, there is a link in my bio! I wonder if HN isn’t displaying it because this account is a new account?

Regardless, thanks for the kind words! (and for those wondering, the link is https://heliographe.net :)

I’m an indie app developer building photography apps because I love photography.

I don’t harbor any particular resentment towards the App Store; in fact I am fine giving Apple 15% of my proceeds (I make way less than $1M a year) to handle content delivery, refund requests, minor advertisement, etc.

I bought a Vision Pro on release, and have a number of ideas/prototypes for it.

After a few weeks of hacking, there are two simple reasons why I didn’t pursue development of them any further:

- the APIs are still really early stage (eg nothing around windowing, I’d like to build some pro photo editing apps that’d require advanced windowing functionality)

- even if I were to work around the API shortcomings, take the time to develop a full app, and then release it - then how many sales will I get at most? Maybe a thousand? Compared to the iPhone/iPad/Mac, that’s nothing.

So I figured waiting a year or two for the APIs to get better and more people to have access to the hardware made sense.

Also, I went from considering making AVP exclusive apps to making apps that work on Mac/iPad, and maybe have some bonus features on the AVP - I think that’s a better way to go about it (nothing released like that yet, still in development).

All that said, there’s something magical about the AVP’s high quality screens for photography. Seeing your photos in space right in front of you is definitely one step above looking at them on a phone/tablet/laptop screen (and one step below looking at large high quality prints of them, but that requires a different kind of effort).