Light Meter LM vs DitLog

Turn your smartphone into a professional-grade light meter. Measure illuminance (lux/foot-candle) and color temperature (CCT in Kelvin) with unmatched accuracy — trusted by photographers, engineers, and lighting professionals worldwide. Why waste money on a hardware meter when you’re already carrying one in your pocket? The LM-3000 offers the same quality and usability as a traditional hardware light meter. Developed by optics scientists at the Zurich University of Applied Sciences, LM-3000 is the only light meter app scientifically validated for accuracy. It achieves professional-grade precision by leveraging your iPhone's front-facing camera sensor with advanced RAW image processing. Unlike relying on estimates like other apps, it adheres to the ISO/CIE 19476 standard, ensuring measurements you can trust for critical applications. MEASUREMENTS ⎷ Illuminance in lux or foot-candles ⎷ Correlated color temperature in kelvin FEATURES ⎷ Industry-leading accuracy, matching professional high-end lux meters ⎷ Pre-calibrated for your specific device ⎷ Excellent low light sensitivity to detect light pollution ⎷ No ads ⎷ No Bluetooth and location permission required ⎷ In-app manual ⎷ Save peak reading ⎷ HOLD function with acoustic signal ⎷ Custom calibration option to align readings to another meter DIFFUSER REQUIRED Like every real light meter, the LM-3000 requires a diffuser to measure accurately. A diffuser scatters incoming light evenly on the sensor and prevents hotspots. While it may sound complex, the solution is surprisingly easy. You have two options: 1) Easily build a diffuser yourself in less than a minute using standard printer paper. This is accurate enough for most use cases. 2) Get the dedicated Diffuser Accessory (free worldwide shipping) for best accuracy and convenience. More details on https://lightray.io/diffuser/ (!) Avoid apps that don’t require a diffuser! They are inaccurate because they ignore the basic physics of light measurement. TRY BEFORE YOU BUY The LM-3000 is free to download and comes with a free trial period. The trial period lasts for two non-consecutive days, giving you enough time to see if the app fits your needs. The status of your free trial will be shown as the "battery level" on the top right of the LM-3000's display and on the "Battery Status" screen. Once your light meter's "battery" is depleted, you may choose a Charging Option to keep using the app. You can pick what works best for you: → Single Charge — top-up for another 48 hours (perfect for occasional use), → Continuous Charging — a monthly subscription (great if you use it regularly), → Unlimited Battery — a one-time purchase for unlimited lifetime access LM-3000 is the result of over five years of dedicated research and development, ensuring you get a tool that is precise and reliable. Every in-app purchase supports future development and helps keep the app ad-free for everyone. As a member of 1% for the Planet, we donate at least one percent of all revenue to environmental non-profits — this is our way of giving back. ACCURACY Accuracy is not an afterthought — Apps developed by Lightray Innovation are developed according to the ISO/CIE 19476 standard. Thanks to RAW image processing and a default calibration per device model they’re able to match the performance of high quality traditional hardware light meters. To ensure quality we rigorously test our apps regularly on upcoming devices. DOWNLOAD FOR FREE. TRUSTED BY MILLIONS. LM-3000 is the go-to light meter for photographers, professionals, engineers, and lighting enthusiasts who rely on accurate measurements — not estimates or guesswork. Download for free today and experience the difference! See the app in action: https://youtu.be/EJW7NfE2qCk Terms and Conditions: https://lightray.io/lightmeter/terms/

DitLog は、アマチュア無線のCW（モールス信号）をリアルタイムに解読する、macOS / iPhone / iPad 対応のデコーダーアプリです。受信機のスピーカー音、ライン/オーディオインターフェイス入力、録音済みの音声ファイルから、モールス符号を文字へと変換します。 ■ 主な機能 ・リアルタイム解読：マイク／ライン入力の受信音をその場で文字に変換します。 ・音声ファイル対応：WAV / MP3 / AIFF などの録音を読み込み、全体を高精度に解読します。 ・和文・欧文の自動判定：欧文モールスと和文モールスを自動で切り替えて表示します。 ・受信波形の可視化：キーイングの様子を波形で表示。受信状態がひと目で分かります。 ・トーン同調：ピッチ（トーン周波数）をスライダーで合わせ、目的の信号を狙って解読します。 ・ノイズに配慮した検出：静かな環境の雑音を拾いにくいスケルチを内蔵。実測に基づく設定で、弱い信号は残しつつ余計な誤検出を抑えます。 ・QSO情報の自動抽出：解読テキストからコールサイン・RST などを自動で拾い出し、ログ入力の下書きに反映します。 ・ADIF 書き出し：交信データを ADIF 形式で書き出せます。HamLogJP と互換のフィールドに対応し、ログ管理アプリへ受け渡せます。 ・キーボードからCW送出：入力した文章をモールス符号に変換し、CW 音として再生します（WPM・トーン可変）。和文・欧文どちらにも対応。 ■ こんな方に ・CWの練習中で、受信内容を文字で確かめたい方 ・パイルアップやコンテストで、コールサインの取りこぼしを減らしたい方 ・録音した交信をあとから文字起こししたい方 ・ログ管理アプリ（HamLogJP など）へ交信データを渡したい方 ■ 入力方法 内蔵マイクでの受信音ピックアップに加え、オーディオインターフェイスやライン入力を使えば、無線機の音声を直接取り込めます。直結入力は雑音が少なく、最も安定して解読できます。 ■ プライバシー DitLog は個人情報を収集しません。トラッキングも行いません。音声はデコードのために端末内で処理され、外部に送信されることはありません。 DitLog は、日々の運用と練習に寄り添う、シンプルで実用的なCWデコーダーを目指しています。フィードバックをお待ちしています。73!