Quite slow AF

Despite from the IQ I want to record that the AF speed is way below the speed other fast AF lenses.

Focussing from the most near distance to 5m takes ages as the stepper motor works his way. Yes, it‘s silent but the micro motor lenses feel more snappy when focussing. The stepper motor seems to have a rather longer gear.

Ummm, no.

Scott

Mine’s very very very fast.

Yes it's slower than 23mm f/2 but I would not say it's terrible.

Very strange. Maybe you mean manual focus?

https://fstoppers.com/originals/fstoppers-reviews-fujifilm-50mm-f2-wr-170657

"The 23mm f/2 WR and and 35mm f/2 WR have both had some of the best autofocus performance on the Fuji X System, and the 50mm f/2 is on par, if not faster."

https://www.thephoblographer.com/2017/06/20/review-fujifilm-50mm-f2-r-wr-fujifilm-x-mount/

"With the Fujifilm X Pro 2, the Fujifilm 50mm f2 R WR is fast to focus in both low and great light. With Fujifilm’s system, you’ll often want to set the focusing point to be larger in order to facilitate speed but make it smaller for accuracy."

https://photographylife.com/reviews/fuji-xf-50mm-f2-r-wr

"One of the strongest features of the 50mm f/2 is its focus speed. In good light, this lens acquires focus blazingly fast and accurately. Even alternating focus between near and far subjects is not a challenge. In lower contrast lighting scenarios, focus acquisition takes a fraction of a second longer, but it is still extremely accurate and fast."

https://jonasraskphotography.com/2017/01/19/fujinon-50mm-f2-first-look-completing-compact/

"AF speed is no longer a hindrance of the X system. It’s an asset! – The XF50mm f/2 focuses deadly accurate and really quick."

Where in the world did you get that impression?  That is a completely false statement to the extreme.  Send your lens in for repair now.

That 23/35/50 F2s are superb little lenses and the AF is extraordinary.

Greg Johnson, San Antonio, Texas
https://www.flickr.com/photos/139148982@N02/albums

My only experience of the 50mm was on the X-T100 demo I tried at launch and it did feel skittish - it seemed to wobble the focus back and forth unnecessarily before locking, even in good light. In that respect it felt slow (from initial press to actual lock) even when compared with, say, a 50mm Nikon on an old D90.

JdKen wrote:

My only experience of the 50mm was on the X-T100 demo I tried at launch and it did feel skittish - it seemed to wobble the focus back and forth unnecessarily before locking, even in good light. In that respect it felt slow (from initial press to actual lock) even when compared with, say, a 50mm Nikon on an old D90.

I have great difficulty with this post.

Absolutely no way that lens focuses like what you described unless it is damaged and it is not damaged at a Fuji demo.

No way.  I had such great difficulty with this post that I read the past 25 of your posts, which I rarely care enough to do.

That explained a lot.

You need to switch away from Fuji now.  You don't like their lenses for some reason and hate XTrans, so why waste your time with a system you don't like and then post responses that we read and know absolutely that they can't be even partially correct.  Not even close!

Wobbles focus back and forth even in good light!  That is an absurd statement.  Even the first generation Fuji lenses were way better than that.  That 50 F2 is rock solid and has very fast and precise focus.

Incredible.  Outrageous in fact.

You know what?  We argue the nuances here on DPR.  Modern cameras and lenses are all so good now that the differences are in the nuances.  We peek around the edges.

We never claim that a Sony, Canon, Tamron, Nikon, or Sigma lens is super soft or won't focus, or that they hunt constantly for focus in good light.  That would be crazy if we did that.  If we did that we would have zero credibility.

Greg Johnson, San Antonio, Texas
https://www.flickr.com/photos/139148982@N02/albums

Greg7579 wrote:

JdKen wrote:

My only experience of the 50mm was on the X-T100 demo I tried at launch and it did feel skittish - it seemed to wobble the focus back and forth unnecessarily before locking, even in good light. In that respect it felt slow (from initial press to actual lock) even when compared with, say, a 50mm Nikon on an old D90.

I have great difficulty with this post.

Absolutely no way that lens focuses like what you described unless it is damaged and it is not damaged at a Fuji demo.

No way. I had such great difficulty with this post that I read the past 25 of your posts, which I rarely care enough to do.

That explained a lot.

You need to switch away from Fuji now. You don't like their lenses for some reason and hate XTrans, so why waste your time with a system you don't like and then post responses that we read and know absolutely that they can't be even partially correct. Not even close!

Wobbles focus back and forth even in good light! That is an absurd statement. Even the first generation Fuji lenses were way better than that. That 50 F2 is rock solid and has very fast and precise focus.

Incredible. Outrageous in fact.

You know what? We argue the nuances here on DPR. Modern cameras and lenses are all so good now that the differences are in the nuances. We peek around the edges.

We never claim that a Sony, Canon, Tamron, Nikon, or Sigma lens is super soft or won't focus, or that they hunt constantly for focus in good light. That would be crazy if we did that. If we did that we would have zero credibility.

Greg Johnson, San Antonio, Texas
https://www.flickr.com/photos/139148982@N02/albums

Well, I guess some people just have zero credibility. The only thing we argue about Sony is that their ergonomics are pretty much crap and the menus are worse.  That's all I got.  Everything else from anyone else is pretty much fine.  Different brands, pretty much personal preference on everything else.

celestialemissary wrote:

Yes it's slower than 23mm f/2 but I would not say it's terrible.

In low light, it is a lot slower... in bright light, it's about the same for me.

I can focus on things that confound its AF, but generally speaking. . . what ScottD1964 said.

ScottD1964 wrote:

Greg7579 wrote:

JdKen wrote:

My only experience of the 50mm was on the X-T100 demo I tried at launch and it did feel skittish - it seemed to wobble the focus back and forth unnecessarily before locking, even in good light. In that respect it felt slow (from initial press to actual lock) even when compared with, say, a 50mm Nikon on an old D90.

I have great difficulty with this post.

Absolutely no way that lens focuses like what you described unless it is damaged and it is not damaged at a Fuji demo.

No way. I had such great difficulty with this post that I read the past 25 of your posts, which I rarely care enough to do.

That explained a lot.

You need to switch away from Fuji now. You don't like their lenses for some reason and hate XTrans, so why waste your time with a system you don't like and then post responses that we read and know absolutely that they can't be even partially correct. Not even close!

Wobbles focus back and forth even in good light! That is an absurd statement. Even the first generation Fuji lenses were way better than that. That 50 F2 is rock solid and has very fast and precise focus.

Incredible. Outrageous in fact.

You know what? We argue the nuances here on DPR. Modern cameras and lenses are all so good now that the differences are in the nuances. We peek around the edges.

We never claim that a Sony, Canon, Tamron, Nikon, or Sigma lens is super soft or won't focus, or that they hunt constantly for focus in good light. That would be crazy if we did that. If we did that we would have zero credibility.

Greg Johnson, San Antonio, Texas
https://www.flickr.com/photos/139148982@N02/albums

Well, I guess some people just have zero credibility. The only thing we argue about Sony is that their ergonomics are pretty much crap and the menus are worse. That's all I got. Everything else from anyone else is pretty much fine. Different brands, pretty much personal preference on everything else.

I agree Scott.  I came so close recently  (really close) to buying the AlphaSevenThree and the 4 best Sony lenses and going dual system along with Fuji.  But I just didn't like the feel of them (ergo, size, menus, etc...), but we certainly would never say that Sony IQ is bad or that their best and newest lenses couldn't find focus or were badly soft.  Come on.  But Sony ergo and menu systems are improving.  My point was that this whole 50 F2 can't focus thread is ridiculous, unless the OP has a busted lens.  I have that lens and believe me when I tell you I know what right looks and feels like, and that little lens is as tight as a drum and has world-class autofocus capability (the lens does) .  To say it is a slow focus mess or can't find focus in good light is just outrageous.  Fuji would be dead if that were even 5% true, which it is not.  Crazy.  Sometimes I think guys come on here and just intentionally say stuff to make us crazy or just have some fun.  I'm not saying this guy did moderators, so don't get on me.

Greg Johnson, San Antonio, Texas
https://www.flickr.com/photos/139148982@N02/albums

Greg7579 wrote:

ScottD1964 wrote:

Greg7579 wrote:

JdKen wrote:

My only experience of the 50mm was on the X-T100 demo I tried at launch and it did feel skittish - it seemed to wobble the focus back and forth unnecessarily before locking, even in good light. In that respect it felt slow (from initial press to actual lock) even when compared with, say, a 50mm Nikon on an old D90.

I have great difficulty with this post.

Absolutely no way that lens focuses like what you described unless it is damaged and it is not damaged at a Fuji demo.

No way. I had such great difficulty with this post that I read the past 25 of your posts, which I rarely care enough to do.

That explained a lot.

You need to switch away from Fuji now. You don't like their lenses for some reason and hate XTrans, so why waste your time with a system you don't like and then post responses that we read and know absolutely that they can't be even partially correct. Not even close!

Wobbles focus back and forth even in good light! That is an absurd statement. Even the first generation Fuji lenses were way better than that. That 50 F2 is rock solid and has very fast and precise focus.

Incredible. Outrageous in fact.

You know what? We argue the nuances here on DPR. Modern cameras and lenses are all so good now that the differences are in the nuances. We peek around the edges.

We never claim that a Sony, Canon, Tamron, Nikon, or Sigma lens is super soft or won't focus, or that they hunt constantly for focus in good light. That would be crazy if we did that. If we did that we would have zero credibility.

Greg Johnson, San Antonio, Texas
https://www.flickr.com/photos/139148982@N02/albums

Well, I guess some people just have zero credibility. The only thing we argue about Sony is that their ergonomics are pretty much crap and the menus are worse. That's all I got. Everything else from anyone else is pretty much fine. Different brands, pretty much personal preference on everything else.

I agree Scott. I came so close recently (really close) to buying the AlphaSevenThree and the 4 best Sony lenses and going dual system along with Fuji. But I just didn't like the feel of them (ergo, size, menus, etc...), but we certainly would never say that Sony IQ is bad or that their best and newest lenses couldn't find focus or were badly soft. Come on. But Sony ergo and menu systems are improving. My point was that this whole 50 F2 can't focus thread is ridiculous, unless the OP has a busted lens. I have that lens and believe me when I tell you I know what right looks and feels like, and that little lens is as tight as a drum and has world-class autofocus capability (the lens does) . To say it is a slow focus mess or can't find focus in good light is just outrageous. Fuji would be dead if that were even 5% true, which it is not. Crazy. Sometimes I think guys come on here and just intentionally say stuff to make us crazy or just have some fun. I'm not saying this guy did moderators, so don't get on me.

Greg Johnson, San Antonio, Texas
https://www.flickr.com/photos/139148982@N02/albums

I recently picked up the 50 to go with the 23 f2.  These two lenses are as fast and accurate for AF as anything in the Fuji line up.  And, I haven't even upgraded to the new firmware on the Pro 2.

Scott

Greg7579 wrote:

ScottD1964 wrote:

Greg7579 wrote:

JdKen wrote:

My only experience of the 50mm was on the X-T100 demo I tried at launch and it did feel skittish - it seemed to wobble the focus back and forth unnecessarily before locking, even in good light. In that respect it felt slow (from initial press to actual lock) even when compared with, say, a 50mm Nikon on an old D90.

I have great difficulty with this post.

Absolutely no way that lens focuses like what you described unless it is damaged and it is not damaged at a Fuji demo.

No way. I had such great difficulty with this post that I read the past 25 of your posts, which I rarely care enough to do.

That explained a lot.

You need to switch away from Fuji now. You don't like their lenses for some reason and hate XTrans, so why waste your time with a system you don't like and then post responses that we read and know absolutely that they can't be even partially correct. Not even close!

Wobbles focus back and forth even in good light! That is an absurd statement. Even the first generation Fuji lenses were way better than that. That 50 F2 is rock solid and has very fast and precise focus.

Incredible. Outrageous in fact.

You know what? We argue the nuances here on DPR. Modern cameras and lenses are all so good now that the differences are in the nuances. We peek around the edges.

We never claim that a Sony, Canon, Tamron, Nikon, or Sigma lens is super soft or won't focus, or that they hunt constantly for focus in good light. That would be crazy if we did that. If we did that we would have zero credibility.

Greg Johnson, San Antonio, Texas
https://www.flickr.com/photos/139148982@N02/albums

Well, I guess some people just have zero credibility. The only thing we argue about Sony is that their ergonomics are pretty much crap and the menus are worse. That's all I got. Everything else from anyone else is pretty much fine. Different brands, pretty much personal preference on everything else.

I agree Scott. I came so close recently (really close) to buying the AlphaSevenThree and the 4 best Sony lenses and going dual system along with Fuji. But I just didn't like the feel of them (ergo, size, menus, etc...), but we certainly would never say that Sony IQ is bad or that their best and newest lenses couldn't find focus or were badly soft. Come on. But Sony ergo and menu systems are improving. My point was that this whole 50 F2 can't focus thread is ridiculous, unless the OP has a busted lens. I have that lens and believe me when I tell you I know what right looks and feels like, and that little lens is as tight as a drum and has world-class autofocus capability (the lens does) . To say it is a slow focus mess or can't find focus in good light is just outrageous. Fuji would be dead if that were even 5% true, which it is not. Crazy. Sometimes I think guys come on here and just intentionally say stuff to make us crazy or just have some fun. I'm not saying this guy did moderators, so don't get on me.

Greg Johnson, San Antonio, Texas
https://www.flickr.com/photos/139148982@N02/albums

Yeah, we never argue anything about the quality of other brands.  Just X-trans vs. Bayer, RAW vs. .jpeg., blaming Fuji cause adobe cant bother to make a good converter for x-trans files, why Fuji doesn't do FF also because they skipped FF and went directly to medium format, battery life and wishing every lens Fuji released was something else to meet their own personal preferences. And probably numerous other issues I failed to think of while writing this post.  So, no, we don't argue about anything with other brands, there's no time.

Scott

Just facts:

near focus distance: 50 cm

far focus distance: 440 cm

Cam-Settings:

• AF-S, Single Point
• default AF-Field size
• Focussing inside phase detection area
• 91 Focus fields
• no PRE-AF

slow AF behavior - unchanged exposure image data:

• 50mm
• ISO 2000
• ƒ/2.8
• 1/60
• 0 ev
• Focus time near to far: 0,86s (4 samples)
• Focus time far to near: 1,02s (4 samples)

quicker AF-behavior - 2 stops pushed image data:

• 50mm
• ISO 2000
• ƒ/2.8
• 1/15
• +2 ev
• Focus time near to far: 0,325s (2 samples)
• Focus time far to near: 0,375s (2 samples)

I didn't see any facts in your post. I only see what you claim, which is not verified by my experience or that of any of the other posters. No one else can replicate your slow focus issues.

Please read before claiming wrong statements.

I marked the focus areas here: