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Questions & Answers

FAQ

Will the Mount Adapter for B4 (2/3") Lens to Micro Four Thirds affect the autofocus function of my lens?

When using this adapter, automatic diaphragm, auto-focusing, and other electronic functions will not operate correctly, as it is a mechanical adapter without electronic communication. Manual focusing will be required.

Can I expect any vignetting when using this adapter with my B4 2/3" lenses on a Micro Four Thirds camera?

Vignetting may occur with some lenses when using this adapter, as it does not include corrective optics. The extent of vignetting can vary depending on the specific lens used.

Is infinity focus maintained when using this adapter?

Yes, the adapter is designed to maintain infinity focus, allowing you to capture sharp images of distant subjects when using your B4 2/3" lenses on a Micro Four Thirds camera.

How does the adapter attach to my Micro Four Thirds camera?

The adapter attaches to your camera's lens mount and then your B4 2/3" lens mounts onto the adapter. The precision-crafted design ensures a secure and stable connection.

Does the adapter have any impact on the image quality?

The adapter itself does not contain any glass elements, so it will not degrade the image quality. However, as it is purely mechanical, it may not correct for optical variances like vignetting that are specific to the lens in use.

Shopper : Why Did You Choose This?VINCENT C : I bought this adapter in order to mount a 2/3" broadcast video lens to a gh5 camera.DANNY P : needed for previously purchased camera and lense

Reviews about this item

Review Summary

2017-09-01T14:19:09

Rated 5 out of 5

Solid Build & Appropriately Priced

Holds the lens tight. Gets the job done. Definitely more appropriately priced than some of the other adapters, although I can't speak to the quality of the others in comparison. Just can't imagine there's much more to the hardware. Only issue I've run into is a distinct softness in focus around the edges of the frame when at an f4-f1.8 on my Canon ENG lens (YJ19X9B4) on the JVC LS-300. It's pretty negligible at a 4, but definitely more noticeable wide open at a 1.8. I don't think that's an issue with the adapter, though. I think it's more of an imaging and depth of field problem since the b4 lens is designed for a 2/3" sensor. Not a deal-breaker for the B4-MFT approach since you gain so much more in lens length and functionality without having to break the bank (got two used b4 Canon lenses for $1k - both in great condition). Just something to be aware of.

Cheryl J.

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Fotodiox Mount Adapter for B4 (2/3") Lens to Micro Four Thirds Mount Camera Specifications

  • Compatibility

    Olympus PEN E-PL1, E-PL1s, E-PL2, E-PL3, E-P2, E-P3, E-M, OM-D, E-M5, Panasonic Lumix DMC-G1, G2, G3, G10, GX1, GH1, GH2, GF1, GF2, GF3, GF5, Panasonic AG-AF100 Mirrorless Digital Cameras

  • Adapter Type

    Fotodiox Pro Lens Mount Adapter with Aperture Control - B4 (2/3") Mount Lenses to Micro Four Thirds (M4/3, MFT) Mount Mirrorless Cameras

  • Material of Construction

    Brass with Stainless Steel Finish

  • Infinity Focus

    Yes

  • Tripod Mount

    Yes with Arca Swiss Compatible Grooves

  • AE Priority

    Yes

  • Metering

    Stop-down metering

  • TTL flash metering

    Yes

  • UPC Code

    847372022700

About Fotodiox Mount Adapter for B4 (2/3") Lens to Micro Four Thirds Mount Camera

FEATURED REVIEWS

Solid Build & Appropriately Priced

By Cheryl J.

Holds the lens tight. Gets the job done. Definitely more appropriately priced than some of the other adapters, although I can't speak to the quality of the others in comparison. Just can't imagine there's much more to the hardware. Only issue I've run into is a distinct softness in focus around the edges of the frame when at an f4-f1.8 on my Canon ENG lens (YJ19X9B4) on the JVC LS-300. It's pretty negligible at a 4, but definitely more noticeable wide open at a 1.8. I don't think that's an i...

View full Review

Where versatility meets affordability, the Mount Adapter for B4 (2/3") Lens to Micro Four Thirds Mount Mirrorless Camera stands out as a high-quality, durable, and compact solution for photographers. This mechanical adapter seamlessly connects a B4 2/3" lens to a Micro Four Thirds (MFT) camera body, expanding your lens options without the need for new purchases.

While it doesn't include corrective optics, the adapter may result in vignetting depending on the lens used. However, its ability to breathe new life into your prime lenses with your latest camera makes it an invaluable tool for both professional and amateur photographers.

Crafted to pristine award standards, this Fotodiox 'Pro' Series adapter ensures a perfect fit between your camera and lens. Its unique design not only guarantees a secure connection with no "play" thanks to the leaf springs emulating the camera body, but also enhances the professional appearance of your equipment.

Please note that automatic diaphragm, auto-focusing, and other electronic functions may not operate correctly with this adapter. As such, "stop-down mode" will need to be used for metering, as the lens does not have the ability to have its aperture controlled by the camera body. However, infinity focusing is guaranteed, making this adapter a versatile and cost-effective addition to your photography gear.

Fotodiox Mount Adapter for B4 (2/3") Lens to Micro Four Thirds Mount Camera Features

  • Fotodiox Pro Premium Grade "No Play" Adapter
  • Top Notch Craftsmanship, Infinity Focus Guaranteed
  • Anodized Aluminum Construction with a Smooth surface for effortless mounting
  • Allows use of your irreplaceable prime lens with your new camera

Warranty Information

This product has a limited warranty of 24 months.

Key Features

  • Durable B4 to Micro Four Thirds lens mount adapter for seamless lens compatibility
  • High-quality, precision-crafted Fotodiox 'Pro' Series ensures a snug, secure fit
  • Compact and versatile design, perfect for expanding your camera's lens options
  • Maintains professional appearance with unique styling and no lens "play"
  • Manual "stop-down mode" required for metering with guaranteed infinity focus
  • Ideal for professional and amateur photographers seeking cost-effective lens solutions

What's in the box:

  • Fotodiox Mount Adapter
  • Fotodiox 2 Year Limited Warranty