FocusBand Field Download – Professional Depth of Field Calculator for Photographers

Instant Access: Preloaded Professional Shot Templates

Landscape Pack

6 Golden Hour Setups

Pre-calculated hyperfocal marks for 14mm-50mm range
Sunrise & twilight window integration
Infinity focus positions marked

Activate Landscape Templates

18 Shot Card Templates Ready

Product focus-stack sequences included
Architecture wide-angle DOF presets
Portrait environment depth scenarios

Unlock All Templates

Macro Pack

Focus Stack Planner Tools

Auto-calculated slice counts for 1:1 to 1:4 ratios
Pull list generation for precise focus rails
Jewelry & tabletop setup cards

Access Macro Tools

All templates ship with FocusBand Field version 1.1. Codes activate instant access to pre-configured shot cards.

How Sensor-Aware Calculations Transform Field Planning

Real-Time Depth of Field Visualization

FocusBand Field calculates precise focus zones using your camera sensor's actual circle of confusion value. Dual sliders for aperture and subject distance deliver instant visual feedback through interactive DOF curves that update as you adjust parameters.

Physical Lens Barrel Reference Sheets

Generate printable hyperfocal mark templates designed for gaffer-tape application directly onto your lens barrel. Distance marks calibrated to specific focal lengths eliminate guesswork during rapid field shooting scenarios.

Offline-First Architecture for Remote Locations

All calculations run locally via SwiftData storage—zero cloud dependency. Optional location services activate sun position tracking for golden hour planning, but core DOF bench functionality operates completely offline in wilderness environments.

Verified Specifications

Version 1.1

Platform iOS

Offline Mode Full Functionality

Widget Support Home Screen

Storage Local SwiftData

Camera Bodies 24+ Presets

Lens Kits 40+ Focal Lengths

Shot Cards 18 Templates

Professional Tools for Critical Focus Work

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Live DOF Bench Calculator

Interactive dual-slider interface adjusts aperture and subject distance with haptic feedback at hyperfocal zones. Visual teal bar shows sharp focus range with numerical near/far limits updated in real-time.

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Hyperfocal Mark Sheet Generator

Create barrel-tape style distance references for any lens. Printable tables show hyperfocal values from f/2.8 to f/16, formatted for quick field consultation or physical lens marking.

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Focus Stack Planner

Automated slice calculation for macro and product work. Outputs ordered pull list with precise focus distances from nearest point to farthest, optimized for 1:1 through 1:4 magnification ratios.

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Sun Window Tracker

Sunrise, sunset, civil twilight, and golden hour times calculated for any location and date. Visual arc shows sun position throughout the day with optional notifications when shooting windows open.

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Shot Card Library

Save complete shooting setups with camera body, lens, aperture, subject distance, and DOF parameters. Export as PDF strips for crew sharing or on-set reference cards.

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Compare Mode Charts

Side-by-side DOF curve visualization for evaluating two setups simultaneously. Interactive slider adjusts parameters while graphs update, revealing optimal configurations before you shoot.

Understanding the Depth Calculation System

Sensor Format Precision

Circle of confusion values calibrated per sensor: Full Frame (30μm), APS-C (18μm), Medium Format (43μm)
Crop factor integration affects effective focal length and DOF calculations automatically
Critical CoC presets available: Full Frame critical at 19μm, APS-C critical at 12μm
Manual CoC override lets you match specific manufacturer standards or custom print requirements

Field Workflow Integration

Kit library stores camera bodies and lenses with persistent CoC and crop factor settings
Working kit selection instantly applies sensor specs to all calculations without menu diving
Home screen widget displays next golden hour window and most recently used shot card
Haptic feedback on DOF sliders provides tactile confirmation when crossing hyperfocal or infinity thresholds

Built for Photographers by Focus Specialists

FocusBand Field ships with 24+ camera body presets spanning Canon, Sony, Nikon, Fujifilm, Hasselblad, and Leica systems. Lens library includes 40+ common prime and zoom focal lengths with accurate minimum focus distances. Version 1.1 enhances calculation performance and stability across all iOS devices, maintaining full offline functionality even in remote shooting locations where network access is unavailable.

FocusBand Field