What is really needed is for a fellow OM-1 + m.Zuiko 75mm owner to give C-AF a try, preferably with NIX82's settings (eye/face detection and AF targets pattern in particular).
Adammaniam posted a bunch of spectacular OM-1 shots of birds of prey just the other day, so I think he was speaking about the OM-1 + 75mm combo as well, confirming your findings.That's actually worth a lot, thank you for your feedback!
Is that with the OM-1 as well?
It would not surprise me if that's the case.
I don't think they'll need the whole series but it might be a good idea to save your current camera settings to a file and ask them if they want a copy for debugging purposes. I'd submit a few images in raw format, too.
AI has a long way to go before it can be said to be "intelligent ". To the focusing system looking for dark patterns of eye, nose, mouth to identify a human being, any dark and light triangular pattern looks like a face... such as a link fence for instance.
Thank you for the suggestion Daniel!
Good morning,So I got a chance to go out and do some testing and...there's definitely a pretty major bug here. I took about 1600 shots with the dogs, who were more than happy to be test subjects, with just about every AF setting I could think of at the time and I don't think I got 3 frames that were actually in focus. It has nothing to do with AI subject tracking vs zone focus, or any other user controlled setting. Pretty clear that OM has not actually tested this lens body combination. So fear not NiX82, you're not crazy, this camera/lens combination is just completely broken in C-AF with the current firmware. As an aside I also discovered last light that starry sky AF with the PL 200 2.8 + 1.4x TC is also completely broken.
EDIT: Adding an example of a burst with this combo, I believe this one was with animal AI detect on but all the burst look more or less the same. Not sure how well the smaller size gif will indicate focus but not a single shot is actually sharp under the active AF point. Pretty much all severely backfocused to different degrees.
Hey Rick,What I'm referencing are the menu settings telling the camera to prefer face & eye or focus pattern--there is one for shutter half-press and another for AF-on.The one with the smiley face and the "i". Near side eye I believe?
Just for the sake of comparison, here are a couple of shots I got with the 45mm f1.2, shot wide open too.
I have similar shots with the 60mm, the 20mm, the 12-100 and the 150-400. Is it too much to ask from the 75mm? O
Cheers,
Rick
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Hey,
I see that in the meantime another OM-1 + 75mm owner has confirmed your report. That's progress! I hope that you'll manage to get through to the right people at OM Systems, and that they will send your report to the developers (presumably in Japan).Thank you for the suggestion Daniel!
After reading this post, i took my 75mm / om-1 out to the playground to take pictures of my 3yr old.Hey,
I was comparing it with the 12-100, the 20 f1.4, the 45 f1.2, the 60 and the 150-400.
I definitely assume the 75mm is on the slower end of this pack, if not the slowest, but as stated earlier, the hit rate I got from it (i) in combination with the OM-1, (ii) with distant subjects (whether mobile or immobile), is less than 5% (it could even be less than 2% quite frankly), whereas all other lens were absolutely fine.
This being said, I got great feedback and suggestions from other members of this forum, so I'm grateful for that, and I think we're making progress.
In a German forum, there were also some users who reported issues with exactly the same combination; OM-1, 75mm@f/1.8, C-AF, long distances (>10m).Hey,
I was comparing it with the 12-100, the 20 f1.4, the 45 f1.2, the 60 and the 150-400.
I definitely assume the 75mm is on the slower end of this pack, if not the slowest, but as stated earlier, the hit rate I got from it (i) in combination with the OM-1, (ii) with distant subjects (whether mobile or immobile), is less than 5% (it could even be less than 2% quite frankly), whereas all other lens were absolutely fine.
This being said, I got great feedback and suggestions from other members of this forum, so I'm grateful for that, and I think we're making progress.
These are good suggestions and what the OP ought to do before even contacting OMDS IMO. Narrowing down what the issue is go a long way in getting the right solution. We can talk about it til the cow comes home, it won't tell us what is going on with the OP's lens camera combo. It could be as simple as the lens AF being too slow. I don't have the lens, but if I did, I would have done these simple tests a long time ago (and most likely would have switch to S-AF after the 3rd consecutive mis-focused shot!)Just focus on something really far, manually if you must (if the camera won't), just to rule stuff out and make sure the lens actually can focus everywhere it should. There could be something wrong w/the lens mount that can physically prevent it from focusing to certain distances, rare but can happen... Then move on to S-AF and see if you can focus on something near the specified MFD and then again on something far away.Hey,
Thanks for chipping in.
To clarify: my complaint is definitely with somewhat distant subjects only, i.e. more than 3 to 5 meters away I would say. Almost all my shots are missed, whether the subject is immobile (like the little girl in the buggy, or the bird on the pillar, in my original post, or the tennis player simply waiting for the other player to engage), or mobile.
In other words: when used for portraits, I have zero complaint. Like on this pic for example:
I haven't tried focusing to infinity, no. Would you mind clarifying what you have in mind, and how I should perform this test? Thanks!
If all that checks out and it works as expected then it's definitely something more issue obscure with the C-AF settings and/or the way the OM-1 handles the lens, but at least you've then ruled out the obvious or more serious issues.
I will test my 75 and OM-1 at longer distances. I just did an indoor stage show shoot, tough lighting conditions, with performers about half length composed and moving back and forth, and hit rate was about 90%... so about what I expected for that.Hey,
I was comparing it with the 12-100, the 20 f1.4, the 45 f1.2, the 60 and the 150-400.
I definitely assume the 75mm is on the slower end of this pack, if not the slowest, but as stated earlier, the hit rate I got from it (i) in combination with the OM-1, (ii) with distant subjects (whether mobile or immobile), is less than 5% (it could even be less than 2% quite frankly), whereas all other lens were absolutely fine.
This being said, I got great feedback and suggestions from other members of this forum, so I'm grateful for that, and I think we're making progress.
Good morning,I will test my 75 and OM-1 at longer distances. I just did an indoor stage show shoot, tough lighting conditions, with performers about half length composed and moving back and forth, and hit rate was about 90%... so about what I expected for that.Hey,
I was comparing it with the 12-100, the 20 f1.4, the 45 f1.2, the 60 and the 150-400.
I definitely assume the 75mm is on the slower end of this pack, if not the slowest, but as stated earlier, the hit rate I got from it (i) in combination with the OM-1, (ii) with distant subjects (whether mobile or immobile), is less than 5% (it could even be less than 2% quite frankly), whereas all other lens were absolutely fine.
This being said, I got great feedback and suggestions from other members of this forum, so I'm grateful for that, and I think we're making progress.
I have mentioned on the forum already that several of my lenses perform differently on the OM-1. Strange AF motor sounds and difficulty focusing (my Oly 17mm f1.8 especially), compared to all my other m43 bodies, and even surmised whether all or certainly some lenses might need FW updates to optimise them for the OM-1. There is definitely something odd going on.
Hello!
