鏡頭計算 Lens Calculator vs DataCalc by DPBOX

「鏡頭計算」是一款可以進行鏡頭計算及焦距計算兩項功能的APP應用程式。鏡頭計算可以透過鏡頭大小的選取、距離及標的物長度設定，計算得焦距值、視野(Field of View, FOV)及標的區垂直高度。焦距計算則包含了水平焦距計算及垂直焦距計算，透過鏡頭大小的選取、距離及標的區長寬設定，可以計算焦距值。鏡頭大小可以選取七種，分別是：1/4、1/3、1/2.5、1/2、1/1.8、2/3及1英吋。測量單位包含四種，分別是：meter(公尺)、feet(英呎)、inch(英吋)及mm(公厘)。

Portable Data Calculator for Director of Photography, DIT, and professional filmmakers. # How can DataCalc help you? - Offline Use: Use anytime, anywhere, whether in the studio or wild, fast response. - Data Calculation: Calculate the video data capacity under different combination modes. - Transfer Time: Calculate the transmission time required for data at different rates. - Duration estimation: Calculate the video recording duration under a specified capacity. - Summary: Add multiple records to calculate the sum of capacity and transfer time. - Synchronization: Automatically synchronize summary records across multiple devices through iCloud; - Language and units: Support Chinese and English language switching, support conversion standard switching. # Contact us Email: fuxiaopang@gmail.com RedBook: @Gavin Foo # Subscription prices and terms DataCalc by DPBOX can be downloaded for free. If you choose to upgrade to the DataCalc Pro version, you can unlock all paid features. We offer one different purchase option: annual auto-renewal. If you are already a DPBOX Pro user, you can automatically activate DataCalc Pro after logging in with your Apple ID. For annual subscriptions: Once confirmed and paid, it will automatically renew through your Apple iTunes account. After successful payment, the subscription period will be extended. To cancel, please manually turn off the auto-renewal feature in iTunes/Apple ID settings management at least 24 hours before the end of the current subscription period. During the trial period, if you do not cancel the subscription, it will automatically activate and charge at the end of the trial period. This service is at your discretion to cancel; if you choose not to cancel, the renewal service for the next billing cycle will be activated for you. User Agreement: https://dpbox.notion.site/Terms-of-Use-0cd728d8d5074ac9953ce526ae76d705 Privacy Policy: https://dpbox.notion.site/Privacy-Policy-14dfaae1d9514a2eaf82a9f120c74be0