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sajomes

145 karma · joined April 29, 2026

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sajomes··on Show HN: iPhone app takes simultaneous images from 2 lenses, fuses into 1 photo
All 3 is in the app! It's a much harder challenge to deal with the parallax and other artefacts that come up from combining 3 lenses, so that particular feature is launching in beta.
sajomes··on Show HN: iPhone app takes simultaneous images from 2 lenses, fuses into 1 photo
That is something I want to look at post-1.0-launch.
sajomes··on Show HN: iPhone app takes simultaneous images from 2 lenses, fuses into 1 photo
Thank you! I was very happy when I came up with it
sajomes··on Show HN: iPhone app takes simultaneous images from 2 lenses, fuses into 1 photo
Nothing in the app is gated from day 1, you get 14 days of unlimited use before the choice of free vs paid is even presented, with no need to sign up for an official "free trial", so you have a good amount of time to make your mind up.

I am also considering a lifetime unlock option.

sajomes··on Show HN: iPhone app takes simultaneous images from 2 lenses, fuses into 1 photo
That looks insane, definitely a trypophobia trigger!
sajomes··on Show HN: iPhone app takes simultaneous images from 2 lenses, fuses into 1 photo
There is zero lock-in with the files being saved - you can export from the app in HEIC/PNG/JPEG as well as PSD and spatial/SBS 3D. The format the website calls the 'Photosynthesis' file is an HEIC so even if you export that you can still access the data outside of the app.

Unlimited exports of the composite images are part of the subscription (with an option to automatically export to Photos.app and/or a folder of your choosing), but the free tier still offers unlimited saving of the constituent images e.g. the wide & tele shots, just not the composite.

sajomes··on Show HN: iPhone app takes simultaneous images from 2 lenses, fuses into 1 photo
I believe that's a similar idea to Apple's Deep Fusion which also takes multiple frames from the same lens then intelligently combines them for higher detail. As ipsum2 said below, that's different to Photosynthesis, which captures from different lenses simultaneously.
sajomes··on Show HN: iPhone app takes simultaneous images from 2 lenses, fuses into 1 photo
As dole alluded to below, I have been going back and forth in balancing the quality of the example pictures with the data load. I've pushed an update to the site now that weighs much more towards quality for this exact reason! But you're right, I don't want to hide the fact that not all results are perfect.
sajomes··on Show HN: iPhone app takes simultaneous images from 2 lenses, fuses into 1 photo
That's really interesting - the colour match attempts to find the best match between the two lens outputs, which frequently results in them 'meeting in the middle'. You can then manually adjust the output of each lens within the app's editing interface. I'll have a think about the weighting of the colour match.
sajomes··on Show HN: iPhone app takes simultaneous images from 2 lenses, fuses into 1 photo
I believe that's true for most/all night capture, but they take sequential frames from the same lens rather than combining multiple lenses.
sajomes··on Show HN: iPhone app takes simultaneous images from 2 lenses, fuses into 1 photo
Yes exactly, the site shows photos all taken from within the app. I have done A/B tests against photos taken in Camera.app and the Photosynthesis composite does significantly beat the detail central area covered by the second lens in Photosynthesis.

Because of the limitations of capturing multiple lenses at once through isVirtualDeviceConstituentPhotoDeliveryEnabled, there is a second capture mode in the app for 'Quality' which takes a simultaneous capture then takes sequential shots from each lens which do benefit from Deep Fusion, then uses those for the stitch (as long as the Deep Fusion images outperform the simultaneous capture results). That's also what I do for our Night mode.

sajomes··on Show HN: iPhone app takes simultaneous images from 2 lenses, fuses into 1 photo
Thank you, I think I've seen that from reviews for every paid app I've come across - still, happy to take feedback!
sajomes··on Show HN: iPhone app takes simultaneous images from 2 lenses, fuses into 1 photo
Thank you - this has been my plan
sajomes··on Show HN: iPhone app takes simultaneous images from 2 lenses, fuses into 1 photo
I'm scaling the wider 'outer' image using Core Graphics 'CGInterpolationQuality' to avoid blocky pixellation, then feathering the seam between the two lens outputs so the transition isn't jarring.

I didn't know about those Nishika stereo cameras, that looks incredible!

sajomes··on Show HN: iPhone app takes simultaneous images from 2 lenses, fuses into 1 photo
I think this may be due to an issue I've had with loading the full res zoom images on the website, I've been going back and forth trying to balance the loading times and stress on the browser with clarity of the images. Working on a new idea now, so hopefully it'll give better demonstrations soon.
sajomes··on Show HN: iPhone app takes simultaneous images from 2 lenses, fuses into 1 photo
Thank you! I'm quite a new dev so honestly I don't know where to pitch the free tier, and I'm not above changing it. Do you have any suggestions for the free tier?
sajomes··on Show HN: iPhone app takes simultaneous images from 2 lenses, fuses into 1 photo
Thank you very much, that's really appreciated! Just added all the new sign-ups to the TestFlight, looking forward to hearing what you all think.
sajomes··on Show HN: iPhone app takes simultaneous images from 2 lenses, fuses into 1 photo
It's back now!