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XF23f2.8 slows camera

  
 
Nielk Mike
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p.3 #1XF23f2.8 slows camera
gyoung143 wrote:
Nielk Mike wrote
Geoff D F wrote
Nielk Mike wrote
Geoff D F wroteI haven't noticed it. It may be true but not a big deal for me.
That's what real love is about: Always forgiving :-)
These things matter because inexperienced people may read these posts and think it is a major problem.
Also a noble cause: To protect the innocent from evil :-)

From one experienced photographer to the other: There may be many reasons you have never noticed. But others have.
The MAJOR Fuji forum, where there is intelligent and often critical debate, has not a single mention of af-s accuracy issues with wide angles, in more than 10 years I have frequented it.
It comes up regularly here because you drag it into threads frequently. I don't recall eall others agreeing.


https://cameraderie.org/threads/autofocusing-issues.55985/
https://www.thewanderinglensman.com/2022/04/fujifilm-usersthere-is-issue-that.html
Sep 07, 2026 at 02:05 AM
gyoung143
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p.3 #2XF23f2.8 slows camera


Nielk Mike wrote:
gyoung143 wrote
Nielk Mike wrote
Geoff D F wrote
Nielk Mike wrote
Geoff D F wroteI haven't noticed it. It may be true but not a big deal for me.
That's what real love is about: Always forgiving :-)
These things matter because inexperienced people may read these posts and think it is a major problem.
Also a noble cause: To protect the innocent from evil :-)

From one experienced photographer to the other: There may be many reasons you have never noticed. But others have.
The MAJOR Fuji forum, where there is intelligent and often critical debate, has not a single mention of af-s accuracy issues with wide angles, in more than 10 years I have frequented it.
It comes up regularly here because you drag it into threads frequently. I don't recall eall others agreeing.
https://cameraderie.org/threads/autofocusing-issues.55985/
https://www.thewanderinglensman.com/2022/04/fujifilm-usersthere-is-issue-that.html


One post 4 years ago, and a few 'me toos', on a forum with low traffic? You could find many examples of such things.
It is a 'problem' only if you expect the AF system to work with lenses thst have great depth of field at small apertures. You see exploring the limits of AF performance, in an unnatural situation.
Fuji chooses to stop down the lens for shutter button af-s, which can be an advantage, it gives problems if illumination of the AF sensors is low. I suspect all other AF systems have similar issues.
Is it a 'fault', well it's up to you to learn the limitations of any automation, to use good technique to get your pictures.
Regardless of system limitations to use a wide angle at apertures beyond where diffraction will affect your photos is going to lead to problems. Using AF at f/16 with a 14mm is unreasonable, as is expecting AF accuracy with any dimly lit low contrast subject.
Fuji provides you with an alternative, BBF, use it. Ot focus by zone if you NEED f/16 with a wide angle. It's not a 'work around' you have two choices, and are hardly likely to be in a hurry in that situation
Not a fault, but unreasonable expectation, bad technique. Just like the nonsense about tge 23 f/2 being soft if you use it for macro. Beyond the limitations of design.
Get over it, stop whingeing. You are just displaying your poor technique.
Sep 07, 2026 at 03:27 AM
Nielk Mike
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p.3 #3XF23f2.8 slows camera
gyoung143 wrote:
Nielk Mike wrote
gyoung143 wrote
Nielk Mike wrote
Geoff D F wrote
Nielk Mike wroteThat's what real love is about: Always forgiving :-)
These things matter because inexperienced people may read these posts and think it is a major problem.
Also a noble cause: To protect the innocent from evil :-)

From one experienced photographer to the other: There may be many reasons you have never noticed. But others have.
The MAJOR Fuji forum, where there is intelligent and often critical debate, has not a single mention of af-s accuracy issues with wide angles, in more than 10 years I have frequented it.
It comes up regularly here because you drag it into threads frequently. I don't recall eall others agreeing.
https://cameraderie.org/threads/autofocusing-issues.55985/
https://www.thewanderinglensman.com/2022/04/fujifilm-usersthere-is-issue-that.html
One post 4 years ago, and a few 'me toos', on a forum with low traffic? You could find many examples of such things.
It is a 'problem' only if you expect the AF system to work with lenses thst have great depth of field at small apertures. You see exploring the limits of AF performance, in an unnatural situation.
Fuji chooses to stop down the lens for shutter button af-s, which can be an advantage, it gives problems if illumination of the AF sensors is low. I suspect all other AF systems have similar issues.
Is it a 'fault', well it's up
...Show more →

Thank you for pointing out the work arounds - which of course I know and use. But use of BBF does not remove the issue, though it reduces how often and by how far AF goes astray. Only real solution is MF with focus check if one wants to be on the safe side.

And talking about limitations of design: There's no such limitation using my Sony cameras. RX1RMKIII - very accurate and reliable. No focus beyond infinity. But as I said: If one is in love with a brand then one will forgive shortcomings more easily :-)

Poor technique :-) Funny. I can give you many more links - but do your own search.

Sep 07, 2026 at 03:37 AM
Cliff L.
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p.3 #4XF23f2.8 slows camera
Nielk Mike wrote:
Cliff L. wrote
Nielk Mike wroteIt is not okay. it returns inconssitent results with WA lenses, and more so stopped down, and it focuses beyond infinity. Easy to test, easy to reproduce. In particular focus beyond infinity is easy to spot. Overall slight softness when zooming in with nothing in critically sharp focus.
Fortunately, none of my Fuji cameras or lenses (and I have owned almost every one of them over the years) have ever exhibited this behaviour.
Your Fuji images in your flickr gallery were mostly taken with tele zoom lenses. Focal lengths above 23mm don't show the issue as much as wide angle lenses. In fact, I am using my 35f2,50f2 and 90f2 with confidence in AF-S.


If you had bothered to look, most of what I upload to Flickr is tests of various telephoto lenses for bird photography... aside from the four remarkably sharp samples from the Fuji XF 8-16mm f2.8 - one of the most consistently sharp ultra-wide angle lenses I have ever used.
Sep 07, 2026 at 08:27 AM
 


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Nielk Mike
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p.3 #5XF23f2.8 slows camera
Nielk Mike wrote:
Cliff L. wrote
Nielk Mike wroteThe 23f2.8 pancake is a very sharp lens. It perfectly fits the X-E5. But: It slows the camera down considerably (as does the 27f2.8). Image review takes much longer than with other lenses, and returning from image review to shooting also takes a while (and comes with a lot of noise). Guess it something to do with the focus motor and can't be fixed with a firmware update.
Sounds like you have a defective lens.
Nah, 27f2.8 behaves the same. Do you own the23f2.8? Does it behave any different? If so: On which body?


I stand corrected. The 27f2.8 is as noisy - but doesn't make the camera pause when switching in and out of review mode.
Sep 10, 2026 at 11:43 AM
Joseph.
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p.3 #6XF23f2.8 slows camera
Nielk Mike wrote:
The 23f2.8 pancake is a very sharp lens. It perfectly fits the X-E5. But: It slows the camera down considerably (as does the 27f2.8). Image review takes much longer than with other lenses, and returning from image review to shooting also takes a while (and comes with a lot of noise). Guess it something to do with the focus motor and can't be fixed with a firmware update.


Never noticed it on mine. If there is a delay, so what.. we're talking about a fraction of a second? First world problem.
Sep 10, 2026 at 02:17 PM
gaopa
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p.3 #7XF23f2.8 slows camera
Never noticed it on mine. If there is a delay, so what.. we're talking about a fraction of a second? First world problem.

completely agree....no problem for me at all as I love the combo and the photos I'm getting....
Sep 10, 2026 at 06:40 PM
Nielk Mike
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p.3 #8XF23f2.8 slows camera
Joseph. wrote:
Nielk Mike wroteThe 23f2.8 pancake is a very sharp lens. It perfectly fits the X-E5. But: It slows the camera down considerably (as does the 27f2.8). Image review takes much longer than with other lenses, and returning from image review to shooting also takes a while (and comes with a lot of noise). Guess it something to do with the focus motor and can't be fixed with a firmware update.
Never noticed it on mine. If there is a delay, so what.. we're talking about a fraction of a second? First world problem.


Maybe first world - but problem nonetheless.
Sep 11, 2026 at 12:41 AM


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