---
title: kMDItemMaxAperture
framework: coreservices
role: symbol
role_heading: Global Variable
path: coreservices/kmditemmaxaperture
---

# kMDItemMaxAperture

The smallest f-number of the lens. Ordinarily it is given in the range of 00.00 to 99.99. A CFNumber.

## Declaration

```swift
let kMDItemMaxAperture: CFString!
```