DB Labs
iPhone Photo & Storage Glossary
Plain-English definitions for every iPhone photo, storage, and camera roll term you need to know. From burst photos to iCloud optimization — explained clearly.
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Action Mode
Action Mode on iPhone delivers ultra-stable video even while running or moving. It works by using the full sensor with aggressive cropping and stabilization. Resolution is limited to 2.8K, and it requires good lighting conditions. Available on iPhone 14 and later.
Apple ProRAW
Apple's professional photo format that combines RAW sensor data with iPhone computational photography features like Deep Fusion and Smart HDR. ProRAW files are 25–75 MB depending on resolution — roughly 10–25x larger than HEIC. Available on iPhone 12 Pro and later. Best for photographers who edit in Lightroom or similar apps.
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Burst Mode
A camera feature on iPhone that captures a rapid sequence of photos — typically 10 or more frames per second — when you hold down the shutter button. Burst mode is useful for action shots or fast-moving subjects, but it multiplies your photo count rapidly. A single 1-second burst can create 10–15 near-identical photos, most of which are storage waste. The average iPhone user accumulates hundreds of burst photo groups, often without realizing it.
Burst Photos
The individual photos captured during a Burst Mode session. In iOS, burst photos are stored together as a group in your photo library. The native Photos app marks the "best" shot automatically, but all shots in a burst consume storage until you manually select a favorite and delete the rest. A typical burst can consume 30–60 MB for what is effectively one moment in time.
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Camera Roll
The collection of all photos and videos captured or saved on an iPhone, stored in a chronological view within the Photos app. The term "camera roll" originates from film photography but has persisted in digital usage. On iOS, the camera roll is officially called "Recents" or "All Photos" but is universally referred to as the camera roll. It includes every photo taken with your iPhone camera, screenshots, saved images from messages/web, and screen recordings.
Camera Roll Cleaner
An app or process for removing unwanted photos, videos, and media from an iPhone's camera roll. Camera roll cleaners can be manual (reviewing and deleting photos one by one) or app-assisted (using tools like Swype Photo Cleaner to swipe through photos quickly). The goal is to free storage space and reduce photo library clutter while preserving photos worth keeping.
Cinematic Mode
Cinematic Mode on iPhone records video with automatic rack focus and a depth-of-field blur effect, simulating a shallow depth of field like a professional cinema camera. Available on iPhone 13 and later. Files are larger than standard video due to depth data stored alongside the footage.
Clean Up Tool
The iOS 18 Clean Up tool, powered by Apple Intelligence, lets you remove unwanted objects, people, or distractions from photos with a simple tap or circle gesture. It uses generative AI to fill in the removed area seamlessly. Available on iPhone 15 Pro and later with Apple Intelligence enabled.
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Device Storage
The physical storage capacity built into an iPhone — 64 GB, 128 GB, 256 GB, 512 GB, or 1 TB depending on the model. Device storage is distinct from iCloud storage. When your device storage is full, you cannot take new photos, download apps, or receive some messages. Photos and videos typically consume 60–80% of device storage on heavily used iPhones. Check device storage at Settings → General → iPhone Storage.
Duplicate Photos
Exact or near-identical copies of the same photo stored in your iPhone library. Duplicates accumulate through multiple mechanisms: iCloud sync issues, importing photos from multiple sources, repeatedly saving the same image, or near-identical burst shots. iOS 16 introduced a native Duplicates album in the Photos app. Duplicate photos can silently consume gigabytes of storage without adding any visual value.
Deep Fusion
Deep Fusion is Apple's pixel-level computational photography system that combines multiple exposures for dramatically detailed, low-noise photos — especially in medium to low lighting. It processes images pixel by pixel using the Neural Engine. Active automatically on iPhone 11 and later; you can't toggle it manually.
Digital Legacy
Digital Legacy is Apple's feature that lets you designate Legacy Contacts who can access your Apple ID data — including photos, messages, and iCloud content — after you pass away. Set up at Settings > [Your Name] > Password & Security > Legacy Contact.
Dolby Vision HDR
Dolby Vision is a premium HDR video standard used in iPhone video recording since iPhone 12. It captures richer colors and higher dynamic range than standard video. Dolby Vision files are larger due to HDR metadata, and not all screens or editing apps support playback properly.
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Face ID
Face ID is Apple's facial recognition system used to unlock your iPhone, authorize purchases, and protect private content like the Hidden album in Photos. Face ID uses the TrueDepth camera to create a mathematical map of your face. It does not store actual photos of your face and all processing happens on-device.
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HEIC (High Efficiency Image Container)
Apple's default photo format since iOS 11, which uses HEVC compression to store photos at roughly half the file size of JPEG while maintaining equivalent visual quality. A typical iPhone HEIC photo is 2–4 MB compared to 3–8 MB for JPEG. HEIC is great for saving storage space, but some non-Apple apps and Windows systems have limited HEIC compatibility. You can convert HEIC to JPEG when transferring photos to a computer via Settings → Photos → Transfer to Mac or PC → Automatic.
HEVC (High Efficiency Video Coding)
Apple's default video format (also called H.265) for iPhone video recordings since iOS 11 and A9 chip. HEVC encodes video at roughly half the file size of the older H.264 format with equivalent quality. A 1-minute 4K HEVC video is approximately 170 MB vs. 375 MB in H.264. Despite the compression advantages, 4K video remains one of the largest consumers of iPhone storage.
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iCloud Photos
Apple's cloud service that automatically backs up your entire photo library to iCloud and syncs it across all your Apple devices. When enabled, every photo and video you take is uploaded to Apple's servers and accessible from iPhone, iPad, Mac, and iCloud.com. Deletions sync across all devices — deleting a photo on iPhone also removes it from iCloud and other devices after 30 days. iCloud storage plans start at 50 GB ($0.99/month) and go up to 2 TB ($9.99/month). Enable at Settings → [Your Name] → iCloud → Photos.
iCloud Storage
Apple's paid cloud storage service that stores backups, photos, documents, and app data. Every Apple ID includes 5 GB of free iCloud storage — but this is shared across iPhone backups, iCloud Photos, and iCloud Drive. Most iPhone users exhaust the free 5 GB quickly. If your iCloud storage is full, new photos stop syncing to iCloud. Upgrading your iCloud plan OR deleting photos/backups can free iCloud storage.
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Live Photo
An iPhone camera feature that captures 1.5 seconds of motion and sound before and after the shutter tap, creating a short animated clip alongside the still photo. Live Photos take up approximately twice the storage of a regular still photo — typically 4–8 MB — because they store both the image and a short video. Enabled by default on most iPhone camera settings. You can convert a Live Photo to a still photo (saving ~50% space) by long-pressing in the Photos app and selecting "Make Key Photo" then disabling Live.
LiDAR Scanner
LiDAR (Light Detection and Ranging) is a depth-sensing scanner on iPhone 12 Pro and later Pro models. It measures distances by bouncing infrared light off objects, enabling faster autofocus in low light, improved Portrait Mode depth maps, and AR applications. LiDAR data itself uses minimal storage, but apps that create 3D scans or photogrammetry models from LiDAR can generate large files.
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Macro Photography
Macro Photography on iPhone Pro models allows extreme close-up shots as close as 2cm using the Ultra Wide lens. Available on iPhone 13 Pro and later. The camera switches automatically when close to a subject (Auto Macro), which can be disabled in Settings > Camera.
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Night Mode
Night Mode on iPhone captures bright, sharp photos in low light using long multi-frame exposures processed by the Neural Engine. It activates automatically in dark conditions and can extend exposure time from 1 to 30 seconds depending on stability (handheld vs. tripod). Available on iPhone 11 and later.
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Optimize iPhone Storage
An iCloud Photos setting that stores full-resolution photos in iCloud and keeps smaller, device-optimized versions on your iPhone to save local storage. When you view a photo, the full-resolution version downloads from iCloud if available. Enable at Settings → Photos → Optimize iPhone Storage. This is one of the most effective single-toggle storage fixes available — many users report saving 5–20 GB by enabling this setting.
Other Storage (System Data)
A catch-all category in iPhone Storage settings (renamed "System Data" in iOS 15+) that includes caches, logs, Siri voices, fonts, Safari data, Mail attachments, and keychain data. Other Storage can grow to 10–20 GB and is not directly deletable. Common fixes include clearing Safari cache, offloading apps, and restarting your iPhone.
Offload Unused Apps
An iPhone setting that automatically removes apps you rarely use while preserving their data and documents. When you tap the app icon again, it re-downloads instantly with all your data intact. Enable at Settings > General > iPhone Storage > Offload Unused Apps. This can save several gigabytes without losing any app data.
Object Eraser (Clean Up Tool)
Object Eraser — called "Clean Up" in Apple's Photos app — is an AI-powered tool introduced with Apple Intelligence on iPhone 15 Pro and later that removes unwanted objects, people, or distractions from photos. Circle or brush over an object and the tool fills in the background automatically. The edited photo replaces the original, though you can revert to the original at any time.
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ProRAW (Apple ProRAW)
Apple's computational RAW photo format, available on iPhone 12 Pro and later. ProRAW combines the flexibility of RAW editing with iPhone computational photography features like Deep Fusion and Smart HDR. Files are 25–50 MB at 12MP resolution and 75 MB+ at 48MP — roughly 10–25x larger than HEIC. Best for professional photographers who edit in Lightroom or similar apps.
Photo Cleaner App
A third-party iOS application designed to help users review and delete unwanted photos from their iPhone more efficiently than the native Photos app allows. Photo cleaner apps typically offer features like bulk swipe-to-delete, smart grouping (screenshots, bursts, duplicates), and storage-freed counters. Key criteria for a good photo cleaner: on-device processing (no cloud uploads), safe deletion through iOS Recently Deleted, and an intuitive interface. Swype Photo Cleaner by DB Labs is a free example that meets all three criteria.
Photo Library
The complete collection of all photos and videos stored on an iPhone or in iCloud, accessible through the Photos app. The photo library includes the camera roll (shots taken with your camera), saved images, screenshots, screen recordings, and synced photos from other devices. On a heavily used iPhone, a photo library can contain 10,000–100,000+ items spanning years of memories — and gigabytes or even terabytes of storage.
PhotoKit
Apple's official iOS framework (API) that allows third-party apps to read and modify the photo library with user permission. PhotoKit enforces iOS security standards — apps using PhotoKit must request explicit permission before accessing photos, all deletions go through the iOS Recently Deleted album, and the framework provides no mechanism for uploading photos without separate network code. Swype Photo Cleaner uses PhotoKit for all photo operations, which is why it can guarantee that photos are never uploaded.
Photographic Styles
Photographic Styles are iPhone camera presets applied at the moment of capture — not as a filter after the fact. They adjust tone and warmth while preserving skin tones. Options include Standard, Rich Contrast, Vibrant, Warm, and Cool. Available on iPhone 13 and later, with enhanced controls on iPhone 16.
Photonic Engine
Photonic Engine is Apple's advanced image processing pipeline on iPhone 14 and later that applies computational photography (Deep Fusion) earlier in the imaging process — at the uncompressed stage — for dramatically better mid-to-low light photos across all cameras including the front camera.
Photo Stream (My Photo Stream)
Photo Stream (My Photo Stream) was Apple's free service that automatically synced recent photos across your Apple devices without using iCloud storage. It stored the last 1,000 photos for 30 days. Apple discontinued My Photo Stream on July 26, 2023, replacing it fully with iCloud Photos.
Portrait Mode
Portrait Mode creates photos with a blurred background (bokeh) and sharp subject using depth data from dual cameras or the LiDAR scanner. You can adjust the depth effect and lighting style after capture. Portrait photos are slightly larger than standard photos due to embedded depth map data. Available on iPhone 7 Plus and later.
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Recently Deleted Album
A system album in the iOS Photos app that temporarily holds deleted photos and videos for 30 days before permanently removing them. When you delete a photo — whether through the native Photos app or a third-party app using PhotoKit — it goes to Recently Deleted first. Storage is NOT freed until a photo is either removed from Recently Deleted or the 30-day period expires. To immediately free storage after a cleanup session, go to Photos → Albums → Recently Deleted → Delete All.
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Shared Albums
Shared Albums let multiple people contribute photos and videos to a shared collection on iCloud. They don't count against your iCloud storage limit, making them a free way to share large numbers of photos. Up to 200 participants per album with a 5,000 item limit. Different from iCloud Shared Photo Library, which is a full merged library.
Screenshot
A static image capture of everything currently visible on an iPhone's screen. Taken by pressing the side button and volume up simultaneously (or side button + home button on older iPhones). Screenshots are automatically saved to the camera roll in the "Screenshots" album. Screenshots are the #1 type of photo that accumulates as storage waste — the average iPhone user has 500–2,000+ old screenshots they no longer need. Each screenshot is typically 2–8 MB depending on screen resolution.
Smart Groups
A feature in Swype Photo Cleaner that automatically categorizes your photo library into focused groups — Screenshots, Burst Photos, Screen Recordings, and others — so you can target specific types of media clutter. Rather than swiping through every photo in chronological order, Smart Groups lets you tackle the worst storage offenders first. For most users, clearing the Screenshots group alone can free 1–5+ GB in a single session.
Storage Management
The practice of monitoring, optimizing, and maintaining available storage on an iPhone. Effective storage management typically involves: (1) deleting unwanted photos and videos, (2) enabling iCloud Optimize Storage, (3) offloading unused apps, (4) clearing app caches, and (5) removing downloaded media. Photos and videos are almost always the primary storage consumer and the highest-leverage target for storage management on iPhones.
Smart HDR
Smart HDR automatically combines multiple exposures taken in rapid succession to recover highlights and shadows in iPhone photos. Each iPhone generation uses a different version — Smart HDR 3 (iPhone 12), Smart HDR 4 (iPhone 13), Smart HDR 5 (iPhone 16). It runs automatically; there is no toggle to disable it on newer models.
Spatial Video
Spatial Video is 3D video captured on iPhone 15 Pro and iPhone 16 models, designed for playback on Apple Vision Pro. It records stereoscopic depth using two cameras simultaneously. Spatial videos are significantly larger than standard video — roughly 130 MB per minute at 1080p 30fps.
Swype Photo Cleaner
A free iPhone app by DB Labs that uses a swipe gesture interface to help users clean their camera roll. The core mechanic: swipe left on a photo to delete it, swipe right to keep it. Swype also includes Smart Groups for targeted cleanup of screenshots, burst photos, and other media types. All processing is on-device — photos are never uploaded to any server. Available free on the App Store (iOS 16+).
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Visual Lookup
Visual Lookup on iPhone identifies objects, plants, animals, landmarks, art, and more in your photos using on-device machine learning. Swipe up on a photo or tap the info button to see what Visual Lookup has detected. Available on iPhone with A12 Bionic or later running iOS 15+.
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