Halcyon Camera vs 卡图cutout：实况照片视频互转照片视频格式转换、背景处理

Halcyon brings the soul of film to your iPhone. Twelve hand-crafted film stocks — Kodak Portra 400, Cinestill 800T, Velvia 50, Tri-X 400 and more — each with the temperature, tone curve, grain, and halation of the real thing. Apply them live, before you take the shot, and what you see is exactly what you get. REAL PRO CONTROLS, ONE-HANDED. Full manual ISO, shutter, focus, white balance, and exposure. Tap to focus. Long-press for AE/AF lock. Pinch to zoom. Volume buttons fire the shutter. Lens switcher for ultrawide, wide, telephoto. Halide-style focus loupe magnifies the sharpness plane as you rack focus. Histogram, waveform, focus peaking, zebras, false color, horizon level — when you need them, hidden when you don't. NEW IN 3.2 — LONG EXPOSURE, SLOW-MO, LIVE PHOTO. • Multi-frame long exposure — 2, 5, 10, or 20 second stacks with automatic alignment for handheld light trails, silky water, and star fields • Slow-motion capture at 120fps and 240fps • Live Photo for every film stock — the frames before and after, with the film baked in • Thermal and storage health warnings before a long take can bite you • Alternate app icons: Amber, Midnight, Noir BUILT-IN PRO OVERLAYS. • Histogram — real-time RGB • Waveform — luminance monitor • Focus peaking — see what's sharp • Focus loupe — Halide-style magnifier • Zebras — highlight clipping alert • False color — exposure map • Horizon level — stop crooked photos • Rule-of-thirds grid • Cinematic frame modes — square, 3:2, 16:9, half-frame • Live ISO / shutter chips PRO VIDEO WITH FILM SIMULATION. Record HEVC, ProRes 422 HQ, or Apple Log with the film baked in. Cinematic 24fps, 4K, live audio, plus 120/240fps slow-motion. EVERYTHING IS YOURS. WYSIWYG: every effect — film, grain, halation — is baked into the saved photo. ProRAW is preserved as alternate. Create custom film recipes with a 14-slider editor. Save them, share them, refine them. YOUR PHOTOS STAY ON YOUR DEVICE. No analytics. No data collection. No network requests. Nothing leaves your iPhone. Made with care for everyone who misses film.

卡图cutout是一个集抠图、图片视频格式转换、实况照片与视频互相为一体的图片处理app。 首先是抠图功能。目前抠图功能只在Mac版本提供，iOS版抠图功能仍在开发优化。用户可以利用“抠除背景”一键抠除背景，将一张图像转换为透明背景仅保留主体，也可以利用“画笔”“吸管”“橡皮”对自动抠除的结果进行修改。通过连线、框住部分分离，用户也可快速分离想要的图片部分。 其次是图片格式转换功能，这一功能可以实现主流图片或视频格式之间的转换。 最后是实况与视频之间互转功能。在转换页面，用户可导入一张实况照片，之后将其转换为视频。在视频抠帧页面，用户可以从视频中保存一帧静止的图片，也可以保存一张实况图片。