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Tokina SZX 400mm f/8 Reflex MF Lens (Micro Four Thirds)

BH #TO4008MFM43 • MFR #SZXMF400-M43
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Tokina SZX 400mm f/8 Reflex MF Lens (Micro Four Thirds)
Key Features
  • Micro Four Thirds | f/8 Fixed Aperture
  • 800mm (Full-Frame Equivalent)
  • Catadioptric Telephoto Lens
  • Manual Focus
The SZX 400mm f/8 Reflex MF Lens from Tokina is a 400mm catadioptric optical design super telephoto lens for Micro Four Thirds-mount camera systems with a fixed f/8 aperture. It offers a compact alternative to standard telephoto lenses and has a lightweight and compact design to fit easily in your pocket or small bag. Ideal for travel, wildlife, and outdoor photography, it provides a 800mm full-frame equivalent focal length.
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Tokina SZX 400mm f/8 Overview

The SZX 400mm f/8 Reflex MF Lens from Tokina is a 400mm catadioptric optical design super telephoto lens for Micro Four Thirds-mount camera systems with a fixed f/8 aperture. It offers a compact alternative to standard telephoto lenses and has a lightweight and compact design to fit easily in your pocket or small bag. Ideal for travel, wildlife, and outdoor photography, it provides a 800mm full-frame equivalent focal length.

The SZX 400mm f/8 reflex lens features a T-Mount design, making it easily adaptable to a wide variety of camera systems. This lens includes a Micro Four Thirds-mount adapter.

The manual focus, catadioptric optical design of this telephoto lens has a fixed f/8 aperture, which is compatible with select camera focus peaking systems and in-body multi-axis advanced image stabilization systems.
Multilayer antireflection coating for efficient light intake and reduced flare, plus high-reflectivity silver coating and a protective antioxidant layer on the back side of mirrored surfaces for long performance life.
Minimum focusing distance of 45.27" and magnification 0.4x can capture small objects, while the 400mm focal length reduces the possibility of casting a shadow on the subject.
Catadioptric design and construction creates a smooth and unusual donut-shaped bokeh.
Wide focus ring provides smooth 270° rotation.
EAN: 4961607634745

Tokina SZX 400mm f/8 Specs

Focal Length
400mm (35mm Equivalent: 800mm)
Aperture
Fixed: f/8
Lens Mount
Micro Four Thirds
Lens Format Coverage
Micro Four Thirds
Angle of View
6° 8'
Minimum Focus Distance
45.28" / 1.15 m
Magnification
1:2.5 Macro Reproduction Ratio
0.4x Magnification
Optical Design
6 Elements in 5 Groups
Focus Type
Manual Focus
Image Stabilization
No
Filter Size
67 mm (Front)
30.5 mm (Rear)
Dimensions
2.9 x 3" / 74 x 77 mm (Diameter x Length)
Weight
12.5 oz / 355 g
Packaging Info
Package Weight
1.445 lb
Box Dimensions (LxWxH)
6.7 x 4.5 x 4.4"

Tokina SZX 400mm f/8 Reviews

This Lens Will Burst Your Bokeh Bubble

By Holly
Rated 5 out of 5
Date: 2026-07-21

For such an affordable price this lens is worth checking out if you love bokeh. It's manual focus with a fixed aperture and fixed focal length. As such, be aware you might shoot with a high ISO if in darker conditions so you might want a tripod so you can lower the ISO and also b/c there's no image stabilization. Handheld was fine for me but you can literally feel the camera wavering a bit (figured my in camera IS would come to the rescue in this case). It's very light. You'll want to use focus peaking to help identify focus and it seems the focus is linear versus a center spot. It comes in 500mm also which has the same effects so I almost wish I bought that one for more reach so keep that in mind. This is a fun lens to create bokeh overlays with. I give it two thumbs up!

sharp enough and surprisingly usable

By Lawrence
Rated 4 out of 5
Date: 2024-08-11

I've felt the need for a longer lens every time I've visited the zoo. I can't justify the cost of a super-long Nikkor, but this Tokina is inexpensive enough that I could talk myself into the purchase. It's small and light enough that it won't get left at home. I'll take it to the zoo on every visit. It has its disadvantages over the Nikkors - manual focus only, not weather sealed, and fixed f/stop. But it's enough lens for my needs. It's sharper than many lenses I've owned over the years, though not Nikkor-Z-sharp. A little tweaking in post-processing and the images are just fine, even with reasonable cropping. It's fast enough with reasonable ISOs for the shooting conditions I use it for. With peaking turned on, focusing isn't bad at all; but I've got years of practice from before autofocus was a thing. I'm more than satisfied with this lens.

See any errors on this page?

Will focus peaking work when mounyed to a OLY OMD ...

Will focus peaking work when mounyed to a OLY OMD EM1 mkII?
Asked by: William P.
It will not.
Answered by: David
Date published: 2021-07-05

I just got this lens for an Olympus EM1-ii. Can't ...

I just got this lens for an Olympus EM1-ii. Can't seem to get the focus peaking to work. Works fine with the one other manual focus lens I have. Is there some limitation with being 400mm or f/8?
Asked by: Ronald
According to Olympus, they state this must be an isolated lens issue. There is no in-camera reason for lack of focus peaking. You simply need to customize a button to focus peaking usage. Tap the selected customized button to turn on focus peaking, and tap the button again to turn off the focus peaking feature. If there is still no focus peaking, then it is really a lens issue as focus peaking depends on contrast to work; no electrical lens contacts are needed.
Answered by: Manzell L
Date published: 2021-12-18

Is it necessary to post-produce a lot ...

Is it necessary to post-produce a lot (sharpening, contrast, etc) your original file from this lens to get something good ?
Asked by: Jean-Michel
I have found some sharpening and increased contrast in post processing helps.
Answered by: Larry
Date published: 2021-01-31

Do this need and/or come with an adaptor for ...

Do this need and/or come with an adaptor for Fujifilm. Is this lens auto focused, or totally manual focus?
Asked by: William
This lens comes with an adapter and is manual focus only.
Answered by: Rob
Date published: 2021-02-04

For the MFT mount, does this 400mm with the 2x ...

For the MFT mount, does this 400mm with the 2x extender make this an equivalent of 400mm x 2 (extender) x 2 (MFT crop)?
Asked by: Liam
Yes, using the Tokina SZX 400mm f/8 Reflex MF Lens with 2x Extender Kit for Micro Four Thirds on a micro 4/3rds camera is like a 1600mm lens.
Answered by: Rob K
Date published: 2023-08-02

With the 2X extender attached, I assume this ...

With the 2X extender attached, I assume this becomes an f/16 lens setup at 800mm?
Asked by: Joseph
Yes, this Tokina SZX 400mm f/8 Reflex MF Lens when used with its 2X Extender would make the maximum aperture set for f/16.
Answered by: Kirk R
Date published: 2022-11-09

Is this apse or full frame? Listing says both.

Is this apse or full frame? Listing says both.
Asked by: Grant
Since it’s a T-mount lens, it will cover the full 35mm frame. But with the proper choice of adapter it will cover any of the (common) smaller sensors such as micro-4/3 and APS-C
Answered by: peter
Date published: 2022-02-10

How good is the image quality?

How good is the image quality?
Asked by: David
As of the date/time of this reply, the final production version of the Tokina SZX 400mm f/8 Reflex MF Lens for Canon RF have not yet begun to ship. However, from the sample images listed on Tamron's website, the Tokina SZX 400mm f/8 Reflex MF Lens for Canon RF does appear to have good image quality performance.
Answered by: Manzell L
Date published: 2023-12-24
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