Fringer EF-GFX Pro User Manual

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Fringer EF-GFX Pro User’s Manual
1. Introduction
This product is compatible with Canon EF mount and Fujifilm G mount protocols. It can control
lens’ aperture electronically, auto focus and report lens information for EXIF recording.
There is a built-in electronic aperture ring just like native GF lenses. And it employs contactless
sensors so that you don’t need to worry about wearing problems. In addition to the electronic
aperture ring, the adapter supports more unique features including Phase Detection AF (on GFX100 &
GFX100S only, so far), IBIS, Lens IS and In-camera LaCA (Lateral Chromatic Aberration) Correction,
etc.
2. Compatibility
This adapter works on G mount cameras. However, due to capability differences of different
camera models, its performance may vary.
On cameras without PDAF support, such as GFX50s, GFX50r and GFX50s II, adapted lenses can
only work in the CDAF mode. Most of lenses on the tested and optimized lens list should work
normally in the AF-S mode. However, as many EF mount lenses are not designed for contrast AF, AF
speed may be slow. And AF accuracy may not be good, either. Meanwhile, AF-C mode is not supported.
If AF performance can’t satisfy you, MF is recommended.
On cameras with PDAF support, such as GFX100 and GFX100S, tested and optimized lenses AF
much faster and more accurate. In some circumstances, the experience of using adapted lenses on
these cameras is just like using a DSLR. Thus, if you are about to purchase a new G mount camera to
use EF lenses, the 102M pixel models are highly recommended.
We have tested and optimized over 110 models of EF mount lenses. Compare to lenses not on the
list, tested and optimized ones work better in both PDAF and CDAF modes. However, the EF mount is a
EF mount
Lens release
G mount
including a dust proof rubber ring
Electronic aperture ring
（Open→Close-A-C）
MicroUSB port
for firmware update

Fringer EF-GFX Pro Specifications

General

Type	Lens adapter
Mount Type	EF to GFX
Electronic Contacts	Yes
Autofocus	Yes
Aperture Control	Yes
Firmware Updatable	Yes
Compatibility	Canon EF lenses to Fujifilm GFX cameras
Image Stabilization	Yes (if supported by lens)
Material	Aluminum
Weight	Approx. 200g

Summary

Introduction to Fringer EF-GFX Pro Adapter

Compatibility with GFX Cameras

Fringer EF-GFX Pro Function Descriptions

Lens Self-Test Procedure

Explains the self-test process for untested lenses, including calibration and troubleshooting steps.

35mm Mode for Medium Format

Details managing image cropping for EF lenses on GFX cameras using the 35mm mode setting.

Setting Aperture and Shutter Speed

Guides on setting aperture via electronic ring/dial and shutter speed manually for optimal exposure.

Configuring Autofocus (AF) Modes

Discusses AF on GFX cameras, focus point selection, and AF modes (AF-S, AF-C) for performance.

Lens IS and Camera IBIS Functions

Explains the interaction between lens IS and camera IBIS, their selection, and mode settings for stabilization.

Advanced Settings via SETTINGS.INI

Covers user-configurable software switches and settings adjustments via the SETTINGS.INI file.

Focus Bracketing Support Configuration

Details enabling focus bracketing via SETTINGS.INI and its impact on other camera/adapter functions.

AF to Infinity on Power Off/Playback

Explains how to configure AF to move to infinity upon power off/playback mode via SETTINGS.INI.

Fringer EF-GFX Pro Firmware Update Guide