---
product_id: 431721468
title: "4th generation"
brand: "k&f concept"
price: "€ 78.51"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.gr/products/431721468-4th-generation
store_origin: GR
region: Greece
---

# Sony E-mount compatibility Precision CNC machining Manual focus & exposure 4th generation

**Brand:** k&f concept
**Price:** € 78.51
**Availability:** ✅ In Stock

## Summary

> ⚙️ Unlock vintage glass with modern precision — manual mastery in your hands!

## Quick Answers

- **What is this?** 4th generation by k&f concept
- **How much does it cost?** € 78.51 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/431721468-4th-generation)

## Best For

- k&f concept enthusiasts

## Why This Product

- Trusted k&f concept brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Next-Level Grip:** 4th gen twill knurled design with non-slip key points for effortless handling
- • **Smooth Installation:** High precision fit ensures easy mounting and removal without wear
- • **Durable Craftsmanship:** Premium copper & aluminum alloy build with anti-reflective matting varnish inside
- • **Seamless Manual Control:** Full manual focus, exposure, and diaphragm control for creative freedom
- • **Broad Sony Compatibility:** Works flawlessly with a wide range of Sony E-mount cameras from α7 to NEX series

## Overview

The K&F Concept M42-NEX IV adapter enables seamless use of classic M42 lenses on Sony E-mount cameras, offering full manual control over focus and exposure. Crafted with high-precision CNC machining and premium materials, it features a non-slip twill knurled design for comfortable handling and broad compatibility across Sony’s Alpha and NEX series.

## Description

Full description not available

## Features

- 【Manual Focus】 No electronic contacts. Diaphragm control of the lens is set manually. Supports manual control, manual focus, manual exposure and focus to infinity;
- 【Unique Design】The appearance of the 4th generation lens mount adopts a twill knurled design, and the key points are treated with non-slip, making it easier and more comfortable to hold. On the other hand, the fine carving of CNC machining enhances the texture.
- 【Camera Mount】 Compatible for Sony E-Mount mount cameras, include Sony Alpha α7 I / II / III, α7R I / II / III / IV, α7S I / II / III, α9 I / II, α1, Sony Alpha α3000, α3500, α5000,Alpha NEX-3, NEX-C3, NEX-F3, NEX-3N, NEX-5, NEX-5N, NEX-5R, NEX-5T, NEX-6, NEX-7,Sony Smartshot QX1, QX10 cameras etc.
- 【 Material】High-quality copper and aluminum alloy ;High precision and durable, Install and remove smoothly; Matting varnish inside to avoid light reflection;
- 【Pre-purchase Verification】 Please ensure your lens mount and camera mount before purchase in case of unnecessary returning. We are here for help if you have any question about adapters.

## Images

![4th generation - Image 1](https://m.media-amazon.com/images/I/61zNGfcnT4L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great with Praktica/Pentacon lenses
*by D***D on January 24, 2024*

The adapter is made with great build quality that matches my Sony A7 camera. I use the adapter for my East Germany lenses from Praktica/Pentacon. Highly recommend for anyone who wants to use vintage lenses with a Sony full frame mirror less cameras.

### ⭐⭐⭐⭐⭐ Good quality M42 to Sony E mount adapter.
*by R***N on September 9, 2022*

I took a chance on this one. I needed an adapter that fit with the Pentax Super Micro Coated Takumar 50mm f1.4. This fits and allows the aperture ring to turn without interference as many of the adapters do. No lens modification needed. Well built. Nice design and bonus, the Sony orange ring at the base.

### ⭐⭐⭐⭐⭐ Robusto y confiable
*by S***Z on January 8, 2025*

Me gusto mucho, funciona perfecto con mi lente helios 44m-4 y con mi montura adaptada para telescopios 😁

## Frequently Bought Together

- K&F Concept Lens Mount Adapter M42-NEX IV Manual Focus Compatible with M42 Lens and Sony E Mount Camera Body
- TTArtisan 75mm F1.5 Swirly Bokeh Full Frame Camera Lens Large Aperture Lens Compatible with M42 Mount Camera Lens (Black)
- TTArtisan 100mm F2.8 Full Frame Bubble Bokeh Lens Camera Lense Compatible with M42 Mount Camera Lens

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**Shop now:** [https://www.desertcart.gr/products/431721468-4th-generation](https://www.desertcart.gr/products/431721468-4th-generation)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-07-14*