# Flash Guide Number Calculator AI Agent Connect

> Calculate photographic exposure, power adjustments, and flash stacking requirements.

## Overview
- **Category:** calculators
- **Price:** Free
- **Endpoint:** https://edge.vinkius.com/vk_preview_LSdFcFLEoa53IQUsb2FHUV00d1EzQvhaDS06qfP0/ai-agent-connect
- **Tags:** flash, exposure, guide-number, photography-math, aperture

## Description

This MCP server provides deterministic tools for photographic exposure calculations based on flash Guide Numbers (GN). It allows AI agents to calculate the required aperture using `get_exposure_requirements`, determine effective Guide Numbers at specific power levels with `get_power_adjusted_gn`, and calculate the combined light output of multiple units using `get_stacked_flash_gn`. It is designed to handle ISO sensitivity adjustments and the Inverse Square Law for precise flash photography planning.

## Tools

### get_exposure_requirements


### get_power_adjusted_gn


### get_stacked_flash_gn


## Prompt Examples

**Prompt:** 
```
I have a flash with a GN of 120 at ISO 100. I am 5 meters away from my subject at ISO 400. What f-stop should I use?
```

**Response:** 
```
The required aperture is f/6.
```

**Prompt:** 
```
My flash has a GN of 100. What is the effective GN if I use it at 1/4 power?
```

**Response:** 
```
The effective Guide Number at 1/4 power is 50.
```

**Prompt:** 
```
If I use 4 flash units, each with a GN of 60, what is the total effective GN?
```

**Response:** 
```
The total effective Guide Number for 4 units is 120.
```

## Frequently Asked Questions

**How do I calculate the correct aperture for my flash?**
You can use the `get_exposure_requirements` tool. Provide the Guide Number at ISO 100, the distance to your subject, and your target ISO to receive the required f-stop.

**Can I calculate the effect of using half power?**
Yes, use the `get_power_adjusted_gn` tool by providing the Guide Number at ISO 100 and setting the power fraction to 0.5.

**What happens when I use multiple flashes at once?**
When multiple flashes fire simultaneously, their light combines. Use `get_stacked_flash_gn` to find the total effective Guide Number based on the number of units used.