Can you place a x-fujinon 1:1.9 f=50mm fm lens to this mount?

No. This is for mounting lenses originally made for Pentax/Praktica slr film cameras with a 42 millemeter thread mount to modern Fuji "X" series bodies.

Does the adapter change the functional focal length of the lens?

The earlier answers confuse focal length with angle of view. These are two different things. Focal length is not changed at all by either the adapter or the camera; you would need additional optics to do that. What does change is the effective angle of view, because the APS-C sensor in the camera is smaller than a 35mm film frame. So, yes, in terms of angle of view, a 50mm lens ends up giving you a narrower angle of view comparable to a 75mm lens due to the smaller sensor, but that's not a change of focal length.

Will this adapter work with fuji xt1 and can you mount a holga pinhole lens cap which fits a canon ef adapter on it?

The adaptor should work on any of the x mount series (they all use the same fitting) but I do not know directly about putting a holga pinhole cap on the other end. If the cap fits the Canon gear, it probably will work, but you will have to try it to be sure.

does it work with fujifilm xt 20?

You will have to go into the camera's menu and look for a shoot without lens option.

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Fotasy Adjustable M42 Lens to Fuji X Adapter, 42mm Screw Mount Lens to X Mount Adapter Compatible with Fujifilm X-Mount X-Pro1 X-Pro2 X-E1 X-E2 X-E3 X-A5 X-M1 X-T1 X-T2 X-T3 X-T10 X-T20 X-T30 X-H1

Fotasy Adjustable M42 Lens to Fuji X Adapter, 42mm Screw Mount Lens to X Mount Adapter Compatible with Fujifilm X-Mount X-Pro1 X-Pro2 X-E1 X-E2 X-E3 X-A5 X-M1 X-T1 X-T2 X-T3 X-T10 X-T20 X-T30 X-H1

Product ID: 1891489

Details

Brand
Fotasy
Camera Lens Description
42 millimetres
Compatible Mountings
Fujifilm X
Focal Length Description
42 millimeters
Lens Type
Standard

🌌Infinity focus for astrophotography

🔩42mm precision screw mount

🛠️CNC-milled solid metal build

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Description

🔩 Unlock timeless glass on your Fuji — vintage vibes, modern precision.

EFFORTLESS LENS ROTATION - Includes hex key for easy lens adjustment and secure fit, letting you customize your setup on the fly.
PRECISION INFINITY FOCUS - Guaranteed infinity focus ensures crystal-clear shots, perfect for astrophotography and landscape pros.
MANUAL CONTROL FOR CREATIVE FREEDOM - Full manual exposure and focus control empowers you to craft every frame your way—no auto distractions.
DURABLE CNC MILLED METAL CONSTRUCTION - Robust copper lens mount with a lightweight yet solid design built to last through every shoot.
UNIVERSAL M 42 TO FUJI X COMPATIBILITY - Seamlessly mount vintage M42 lenses on all Fujifilm X-mount mirrorless cameras, from X-Pro to X-T series.

The Fotasy Adjustable M42 to Fuji X Adapter is a precision-engineered, CNC-milled metal adapter that allows photographers to mount classic 42mm screw-mount M42 lenses onto Fujifilm X-mount mirrorless cameras. It guarantees infinity focus, making it ideal for astrophotography and manual shooting enthusiasts. Designed for durability and creative control, it supports full manual exposure and focus adjustments, with no electronic contacts. Compatible with a wide range of Fujifilm X-series models, this adapter is a must-have for professionals seeking to blend vintage optics with cutting-edge camera bodies.

Specifications

ASIN	B007YPSAQA
Best Sellers Rank	#174 in Camera Lens Adapters & Converters
Brand	Fotasy
Built-In Media	M42 Lens to Fuji X Adapter
Camera Lens	42 millimetres
Color	Black
Compatible Camera Models	[Fujifilm X-mount camera models]
Compatible Camera Mount	Fujifilm X
Compatible Devices	Fujfifilm X-Pro1 X-Pro2 X-E1 X-E2 X-E3 X-A5 X-M1 X-T1 X-T2 X-T3 X-T10 X-T20 X-T30 X-H1
Customer Reviews	4.4 4.4 out of 5 stars (178)
Exposure Control Type	Manual
Focal Length Description	42 millimeters
Focus Type	Manual Focus
Global Trade Identification Number	03249476729207
Image stabilization	Digital
Item Type Name	M42 lens to fuji x adapter.
Item Weight	1.6 ounces
Lens	Standard
Lens Design	Fixed
Lens Mount	Fujifilm X
Manufacturer	Photography Accessories INC
Manufacturer Part Number	AF42
Maximum Aperture	1 millimeters
Maximum Focal Length	1 millimeters
Minimum Aperture	1 millimeters
Minimum Focal Length	1 millimeters
Model Name	FX42
Model Number	FX42
Number of Items	1
Screen Size	42 millimeters
Warranty Description	no

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¥3632

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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