Source: https://guthlabs.ai/docs/instrument-workflows/exposure-bench/

instrument chain / verified-workflow-definition

# Photographer's Exposure Bench

Scene light to a printable image.

Status: **observed**Lifecycle: **verified-workflow-definition**

## Goal

Scene light to a printable image.

## Instrument chain

- 01

**[Exposure Triangle / EV Calculator](<https://guthlabs.ai/docs/instruments/exposure-triangle-ev-calculator/>)**

EV core

VERIFIED

- 02

**[ND Filter Stop / Exposure Time Calculator](<https://guthlabs.ai/docs/instruments/nd-filter-stop-exposure-time-calculator/>)**

long exposure

VERIFIED

- 03

**[Exposure Bracketing / HDR Stops Planner](<https://guthlabs.ai/docs/instruments/exposure-bracketing-hdr-stops-planner/>)**

HDR

VERIFIED

- 04

**[Flash Guide Number Calculator](<https://guthlabs.ai/docs/instruments/flash-guide-number-calculator/>)**

flash

VERIFIED

- 05

**[Depth of Field / Hyperfocal Distance Calculator](<https://guthlabs.ai/docs/instruments/depth-of-field-hyperfocal-distance-calculator/>)**

focus

VERIFIED

- 06

**[Field of View Calculator (Sensor + Focal Length)](<https://guthlabs.ai/docs/instruments/field-of-view-calculator-sensor-focal-length/>)**

framing

VERIFIED

- 07

**[Time-Lapse Interval Calculator](<https://guthlabs.ai/docs/instruments/time-lapse-interval-calculator/>)**

timelapse

VERIFIED

- 08

**[Star Trail / Astro Exposure (500 Rule / NPF Rule)](<https://guthlabs.ai/docs/instruments/star-trail-astro-exposure-500-rule-npf-rule/>)**

astro

VERIFIED

- 09

**[Print DPI / Size Calculator](<https://guthlabs.ai/docs/instruments/print-dpi-size-calculator/>)**

output

VERIFIED

## Handoffs and cross-checks

EV anchors aperture/shutter/ISO trades; aperture feeds DoF; pixel dims feed print size.

## PointGuard stance

Every recommendation must preserve EV unless the user asked to change exposure; state which leg of the triangle moved.

## Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

- `INSTRUMENT_COMBOS.json`

- `VERIFIED_LEDGER.json`