LutzNDI vs Color Temperature Meter+

LutzNDI – Professional NDI® Video Monitor for iPad & iPhone Transform your iOS device into a professional broadcast monitor. LutzNDI is the ultimate NDI® video monitoring app for broadcast engineers, live production teams, streaming professionals, and video creators. Designed for studio-quality performance, it delivers real-time, low-latency NDI monitoring with advanced tools normally found only in expensive hardware systems. Whether you’re in a live control room, on location for multi-camera production, teaching broadcast workflows, or running a remote streaming studio, LutzNDI gives you the power, precision, and portability to monitor and analyze your NDI video sources—anywhere on your network. Key Features Professional NDI Video Monitoring Real-time discovery of all NDI sources on your local network Single Source Mode for full-screen, high-quality monitoring Multi-Source Grid Mode – View up to 4 NDI streams at once (2x2 layout) Picture-in-Picture (PiP) mode for main + preview feeds Low-latency streaming with adaptive bandwidth management Auto source detection via Bonjour / mDNS Studio-Grade Video Scopes (iPad Exclusive) Waveform Monitor for accurate luminance analysis RGB Histogram for precise exposure control Vectorscope for color accuracy & broadcast compliance RGB Parade for detailed channel separation GPU-accelerated Metal rendering for ultra-smooth 60fps scope updates Color Grading & LUT Support Real-time 3D LUT application with adjustable intensity Import custom .cube LUTs for on-set look management Built-in LUT presets for popular film and broadcast styles Hardware-accelerated color processing for zero lag Annotation & QC Tools Freeze any frame for technical review & annotation Draw overlays directly on paused frames Add safe area masks (action safe, title safe) and custom overlays On-screen performance metrics: FPS, resolution, connection quality Perfect For: Broadcast Engineers – Studio & OB truck monitoring Live Streaming Producers – Multi-camera control rooms Film & TV Production Crews – On-set reference monitoring Video Engineers – Signal quality checks & color analysis Post-Production Teams – Client review stations Houses of Worship – Affordable multi-camera monitoring Educational Programs – Teaching live production workflows Why LutzNDI? Replaces hardware monitors costing $5,000–$50,000 Portable – Use your iPad or iPhone anywhere on your network All-in-one solution – Multi-source, scopes, LUTs, overlays in one app Optimized for iOS – Metal-based rendering, smooth gestures, efficient memory use Proven Stability – Designed for long sessions without dropping frames

Color Temperature Meter+ measures the colour temperature of the light around you in Kelvin, with tint, mired and the camera white balance to match, straight from your iPhone's camera. ▶ HOW IT MEASURES On iPhone the app reads the camera's own estimate of the light falling on the scene, the same estimate iOS uses to set white balance. Point the camera at a plain white or grey surface lit by the light you want to measure, not at the lamp itself. The reading settles within seconds and shows a ± range, so you can see how steady it is. When that estimate is not available, the app samples the centre of the frame instead, and you can calibrate it once on white paper in daylight. ▶ WHAT YOU SEE • Kelvin with a ± range, updating live • Mired value for filter and gel maths • Light type: golden hour, tungsten, fluorescent, LED, daylight, cloudy, shade • Tint (green or magenta) and Duv • Spectrum bar from 1,000 K to 15,000 K • The nearest camera white-balance preset: tungsten, fluorescent, flash, daylight, cloudy or shade ▶ FREEZE AND SAVE Tap Freeze to hold the current reading. A result card shows the Kelvin, mired, light type and matching white-balance preset, with Save Reading and Measure Again right below it. Saved readings keep their date and time. The latest 50 are kept, you can delete any of them, and you can export the list as CSV. ▶ PHOTOGRAPHY WB ASSIST Pick a target of 3200 K, 4300 K, 5500 K or 6500 K. The app shows the mired shift from the measured light to that target, the Kelvin to dial into your camera's custom white balance, and the CTO or CTB gel strength that closes the gap, from 1/8 upwards. ▶ REFERENCE CHART Thirteen common light sources, from candle flame (1,900 K) to clear blue sky (10,000 K), to compare with what you measured. ▶ HONEST LIMITS A phone camera is not a spectrometer. The app reports correlated colour temperature and tint, which is what matters for matching white balance and choosing gels. It does not measure spectral power distribution, CRI or TLCI, and two lamps with the same colour temperature but different spectra read the same. Mixed lighting gives a blend of the sources. Use it to set up shoots, match bulbs and check rooms; use a dedicated colour meter for critical colour work. ▶ PRIVACY Camera images are analysed on your device and are never uploaded. Available in 30 languages.