Keystone Photo Lab
Tilt-shift lens & perspective
About
This app corrects perspective distortions and expands images using AI. It fills empty corners generated by perspective correction and extends image frames with generative AI. It also enhances resolution and preserves original color and HDR data.
What's New in Keystone Photo Lab
1.3
September 20, 2026
New in Adjust • White Balance: one tap to neutralize a color cast, with a dial to ease it back. Long-press for an eyedropper and pick the exact spot that should be neutral. • Color-targeted Saturation: long-press Saturation to isolate one color, or to change everything except it. • Zoom in to inspect and the view stays put while you switch tools. Also new • 10 free AI edits for new users, up from 5. • A warning before leaving the editor would discard your changes. • Refined look for menus, sheets and messages throughout the app. • The contact form stays clear of the keyboard. • Fixes for users who were missing their free AI edits.
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FAQ
What is Keystone Photo Studio?
Keystone Photo Studio is a photo editing application that specializes in correcting perspective distortions and using AI for image expansion and content generation. It aims to make photos look as if they were shot with a tilt-shift lens.
How does Keystone Photo Studio handle perspective correction?
It allows users to straighten converging verticals and fix keystone distortion in photos, particularly useful for architecture and real-estate shots. Users can tilt, rotate, and warp images until lines appear true.
What is AI Corner Fill in Keystone Photo Studio?
When perspective correction creates empty corners, Keystone Photo Studio uses generative AI to fill these spaces at the photo's full resolution. This ensures no downscaling, soft edges, or visible seams.
Can Keystone Photo Studio extend the boundaries of a photo?
Yes, the Generative Expand feature allows users to extend the frame beyond its original edges. AI can add sky, foreground, or breathing room that matches the existing scene.
Does Keystone Photo Studio preserve original photo quality and color?
Yes, it processes photos at full quality and preserves Display P3 wide-gamut color and HDR gain map end to end. It also saves in native HEIC/HEIF format, retaining EXIF and location metadata.
Is Keystone Photo Studio free to use?
Keystone Photo Studio is available for free. It offers optional auto-renewable subscriptions for additional monthly AI credits, which are charged to your Apple Account upon purchase.
Does Keystone Photo Studio have ads?
No, Keystone Photo Studio does not contain advertisements. The app is designed to be simple, fast, and private, with no account required to start editing.
What devices is Keystone Photo Studio compatible with?
Keystone Photo Studio is supported on iPhone and iPod devices. It is rated for ages 4 and up.
