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FUJIFILM XF 400mm f/4.5 R LM OIS WR Lens

  
 
Cliff L.
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p.1 #1 · FUJIFILM XF 400mm f/4.5 R LM OIS WR Lens


The new lens looks interesting:

https://www.bhphotovideo.com/c/product/1997421-REG/fujifilm_16981452_fujinon_400mm_f_4_5_r.html

I'm a bit surprised Fuji couldn't (or chose not to) have any independent reviewers review the lens - everything I could find on YouTube so far has been reviews by camera stores, most of which are terrible.



Sep 04, 2026 at 10:40 AM
SGinNorcal
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p.1 #2 · FUJIFILM XF 400mm f/4.5 R LM OIS WR Lens


Petapixel dropped their review last night minutes after the announcement. It looks like this lens was an extension of the development of the XF500.


Sep 04, 2026 at 11:34 AM
JadedWriter
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p.1 #3 · FUJIFILM XF 400mm f/4.5 R LM OIS WR Lens


This feels like a lens you won't see proper photos from till the more non partisaned reviewers get their hands on it.


Sep 04, 2026 at 01:48 PM
RWNPhoto
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p.1 #4 · FUJIFILM XF 400mm f/4.5 R LM OIS WR Lens


A lens that maybe I'd like to have, and don't really need, probably a no for me and others.

Looks like they chopped the back off the XF 500 and put the mount there. Almost all of the lens is reported by some to be exactly the XF500, except the back elements. Given it is only 100gms lighter and maybe an inch shorter, seems right.

Be interesting for a while to read the questions and/or comparisons to the the XF500 and even the XF70-300 with and without a 1.4 tele...



Sep 04, 2026 at 05:30 PM
fjablo
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p.1 #5 · FUJIFILM XF 400mm f/4.5 R LM OIS WR Lens


RWNPhoto wrote:
Be interesting for a while to read the questions and/or comparisons to the the XF500 and even the XF70-300 with and without a 1.4 tele...


It absolutely smokes the 70-300mm, even without the sharpness loss from the TC. Pretty similar performance to the XF500 based on Fuji's MTF and similar optical design.

Nice to have such a lens in the line-up and hopefully it means good things for the next generation AF performance.
(I'd personally be more interested in a 250mm f2.8 with built-in TC though)



Sep 06, 2026 at 11:20 AM
RWNPhoto
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p.1 #6 · FUJIFILM XF 400mm f/4.5 R LM OIS WR Lens





Sep 06, 2026 at 01:38 PM
SpecFoto
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p.1 #7 · FUJIFILM XF 400mm f/4.5 R LM OIS WR Lens


I shoot with Sony 61MP FF bodies since 2019 and for the last year 2 Fuji 40MP bodies. In comparing the new Fuji XF 400mm f4.5 to the new Sony GM 400mm f4.5, I am quite surprised that a Sony GM lens is $500 less expensive ($2,698 vs. $3,199 @ B&H) and 1/2 pound lighter (2.2 vs. 2.74 Lbs) than the Fuji offering! I have 3 GM lenses and they are stunning, including the 100-400mm F4.5-5.6 GM since 2019. The new 400 f4.5 is almost a full pound less in weight than my GM zoom.

Both new lenses have linear motors (Sony 2 vs Fuji 1), WR construction, OIS and 95mm filter threads and the dimensions are almost identical, both are under 10 inches in length. The Sony has 23 elements vs 22 for Fuji. Two other Sony advantages are 11 vs 9 aperture blades and a removable vs fixed collar. Personally I like having a 400mm base lens, as for me that is normally plenty of reach where I photograph wildlife and jets at the Salton Sea. On the 61MP bodies a simple button push and I am at 600mm F/L with the in-camera crop mode, or I have a Sony A6700, which is an APSC crop body, though both will be at at 26MP. And I have the Sony1.4x tc too. I rarely ever need past 600mm with the GM zoom, but I can get there on Sony with both the crop and 1.4x tc. With the new Fuji I would have to buy a 1.4x tc (another $500) to get to 840mm, but I lose the 400mm F/L…..

My money is going to Sony in this case. The versatility of having a 400 mm base lens, the $500 and half pound weight savings are just too good to pass up.



Sep 15, 2026 at 11:28 PM
 


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JadedWriter
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p.1 #8 · FUJIFILM XF 400mm f/4.5 R LM OIS WR Lens


Dude nobody cares.
SpecFoto wrote:
I shoot with Sony 61MP FF bodies since 2019 and for the last year 2 Fuji 40MP bodies. In comparing the new Fuji XF 400mm f4.5 to the new Sony GM 400mm f4.5, I am quite surprised that a Sony GM lens is $500 less expensive ($2,698 vs. $3,199 @ B&H) and 1/2 pound lighter (2.2 vs. 2.74 Lbs) than the Fuji offering! I have 3 GM lenses and they are stunning, including the 100-400mm F4.5-5.6 GM since 2019. The new 400 f4.5 is almost a full pound less in weight than my GM zoom.

Both new lenses have linear motors
...Show more




Sep 16, 2026 at 10:57 AM
gyoung143
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p.1 #9 · FUJIFILM XF 400mm f/4.5 R LM OIS WR Lens


We need to see what iq is like, but on the specs Fuji needs a rethink, heavier and more expensive while covering a smaller format is not good news.
Gerry



Sep 16, 2026 at 11:25 AM
SGinNorcal
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p.1 #10 · FUJIFILM XF 400mm f/4.5 R LM OIS WR Lens


Its hard to imagine how the Sony is a half pound lighter and basically the same size envelope. Time will tell if they went too far or if its good design.


Sep 16, 2026 at 12:44 PM
JadedWriter
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p.1 #11 · FUJIFILM XF 400mm f/4.5 R LM OIS WR Lens


Based on what I've seen regarding the size of the XF400 4.5 it seems more than bearable. The only thing I'd wish they'd refresh and put on a diet is the XF200F2. I'm not going to change systems over half a pound.
SGinNorcal wrote:
Its hard to imagine how the Sony is a half pound lighter and basically the same size envelope. Time will tell if they went too far or if its good design.





Sep 16, 2026 at 04:19 PM
morris
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p.1 #12 · FUJIFILM XF 400mm f/4.5 R LM OIS WR Lens


Look at the Sony maximum apature. This is why it is lighter


Sep 16, 2026 at 10:15 PM
SGinNorcal
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p.1 #13 · FUJIFILM XF 400mm f/4.5 R LM OIS WR Lens


morris wrote:
Look at the Sony maximum apature. This is why it is lighter


Same, f4.5



Sep 16, 2026 at 10:23 PM
tuomkok
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p.1 #14 · FUJIFILM XF 400mm f/4.5 R LM OIS WR Lens


SpecFoto wrote:
I shoot with Sony 61MP FF bodies since 2019 and for the last year 2 Fuji 40MP bodies. In comparing the new Fuji XF 400mm f4.5 to the new Sony GM 400mm f4.5, I am quite surprised that a Sony GM lens is $500 less expensive ($2,698 vs. $3,199 @ B&H) and 1/2 pound lighter (2.2 vs. 2.74 Lbs) than the Fuji offering! I have 3 GM lenses and they are stunning, including the 100-400mm F4.5-5.6 GM since 2019. The new 400 f4.5 is almost a full pound less in weight than my GM zoom.

Both new lenses have linear motors
...Show more

The new Sony 600mm and 400mm lenses seem exceptional. Personally I find the 400mm more interesting because of brighter max aperture. With 1.4x TC it could easily replace the too heavy and large 200-600G.

It is nice to see new Fujifilm tele lens, even though it does not seem very competitive compared to other systems. There are Fuji users who need this lens. However, the comparison to Sony is fairly brutal. Sony has also better bodies for typical wildlife and sports use cases.




Sep 17, 2026 at 01:51 AM







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