The INSIDE story on Image Stabilization: Gyros and coils and magnets, oh my!
Вставка
- Опубліковано 13 вер 2024
- We go deep, DEEP inside image stabilization systems to see how they work and how they're made, at the Olympus R&D center in Hachioji, Japan.
Read more here: www.imaging-re...
#Olympus #ImageStabilization #CameraTech
What a rare breath of fresh air! Thank you for an actually useful video, that isn't free advertising for Sony, etc.! You remind me also of how (using the not-unfamiliar analogy of COVID-19), there are those who are science-based in their thinking, and those who think about things in relative terms, taking sides, etc.: the former type of person will save the world; the latter type will just keep spreading the disease.
Thanks Dave - I had no idea! It's always wonderful to hear about the fascinating camera under-stories.
Wow! This was great. Really interesting to see how they did it and what the future is all about- apparently size and weight!
Excellent and valuable video! Wish more manufacturers would share like thish. Wish Oly imaging the best in this uncertain time
Marvelous peace of technology. Just wow.
Ceramic bearings... 🤯
Yeah, that kinda blew my mind too, especially when you think that the bearings and the surfaces they ride on have to maintain flatness to with a few microns, as the whole thing shifts around :-0
What a brilliant invention, presented by a very likeable developer. Thank you very much!
Thank you for a very informative and clear video, I had assumed that you would want to coordinate gyros from deep into the lens with the gyros in the body to make the calculations even more accurate. But after watching this video I guess that might struggle for the same reason that driving the lens IS from the body would struggle. Electrons in copper racing light in glass plus compute in the body maybe makes it too slow. At least if gyros are providing additional data that is not as bad as a full roundtrip to let the body drive the sensor, but just fascinating.
Superbly lucid demonstration by Olympus engineer. Amazing how these light weight ans petite cameras hide so much advanced technology in its body!
That was great, thank you very much!
Very advanced, while mostly overlook technology, also amazing, how it improves year over year in mobile phones, especially in combination with software tweaks.
A fascinating tour well done. Now I can more fully appreciate my M1X. Thanks so much!
Thanks Dave and Olympus for allowing Takeuchi san to be so forthcoming. I've been using Olympus for a number years now including the the EM1 iii and have found their IBIS implementation to be excellent. One thing that you didn't discuss is how the IBIS allows the capture of High Res images which is strikes me as being incredibly challenging technically. Interesting to hear that the gyros are from Seiko Epson. It makes sense that there's a connection due to the shared history of both companies in Nagano. One of the clever features of my old KM 5D was that the IBIS provided visual feedback on how steady you were holding the camera allowing you to choose the right moment (if you had time) as well as indirectly improving technique. Y
Hi Yamakawa -
Ah, I'd forgotten about that feature of the KM 5D! Yes, I always found that incredibly useful. If you had time to get the shot, you could wait until the camera-motion indicator had settled towards a minimum. And it was indeed very useful for improving your technique!
And yes, the handheld High Res mode is almost unbelievable, that it can manage sub-pixel alignment of handheld shots occurring across almost a second. I'll tuck that question away, in case I get a chance to talk with Takeuchi-san or another Olympus IS engineer in the future. (FWIW, I suspect it's a combination of their exceptional IS capability and perhaps some amount of post-processing, to do sub-pixel alignment of the separate images. OTOH, whatever it does, it manages to do it quickly enough that the sub-images in the RAW file are all properly aligned. However the accomplish it, it's indeed remarkable :-0 )
thank you so much, i love my em1x! sounds to me there IS a future Olympus !
Olympus goat once again 💯
That was fascinating! Best video on the subject, hands down.
オリンパスのエンジニアに感謝します。 あなたは素晴らしいです！
The in-body IS vs in-lens IS debate is useful to ascertain whom you can trust. When Canon/Nikon only had lens-based IS, sites like Imaging Resource pointed out that the Pentax IBIS was superior in terms of offering roll compensation as well as pitch and yaw compensation. Dpreview only started loving IBIS when it was offered by Sony and now Canon/Nikon for mirrorless cameras. Same for PixelShift. When DPReview reviewed Pentax PixelShift they not only made a mess of it by using Lightroom which doesn't properly support PixelShift, but also concluded that it is a fringe feature. Fast forward to Sony offering Pixel Shift and suddenly it is a useful feature (even though even DPReview admit that the Pentax implementation of PixelShift is better). Long story short: Imagining Resource always have been the better review site; such a shame that quality doesn't translate into popularity.
I think you may be being unduly harsh on the folks at DPR, but I deeply appreciate your vote of confidence in what IR puts out. Objectivity has been baked into IR's genes from the very beginning, and it makes me *so* happy to see it recognized and appreciated. Thank you!
@@daveetchells338 Unduly harsh on DPR I may be, it is just very frustrating that they always drop the ball on the same side of the court.
@@daveetchells338 I agree that IR is objective but it has further very desirable traits: You are able to appreciate gear for what it was meant to achieve. You don't get sidetracked by video standard not being supported when a camera clearly emphasises still photography. You don't get sidetracked when a camera's AF-C performance is not "class-leading" when the camera and its lenses excel in supporting non-action photography. In short, you see the highlights even when there is shadow. Related to that, you much more acknowledge that not everyone is after the same experience. Many review sites more or less implicitly imply a total order, i.e., the ability to rank cameras independently of user priorities. At IR you are much better at understanding that not all users are cut from the same cloth. Furthermore, you do not solely focus on the numbers but also on photography as an experience and you acknowledge when a camera hits the mark in this area. When I read one of your reviews quite a while ago, I felt I was not reading the typical gear report but rather an account to what extent a camera supports photography. I found that a) intensely refreshing, and b) immensely useful. To this day, your particular angle has shaped the way I evaluate cameras. Thank you!
Very informative and interesting - thanks a lot!
Excellent video, thank you for this introduction and thanks to Olympus for to found and improvement this image stabilization issue...
This is a super-cool science video! Thanks so much to both.
Great content! Thanks to you and Olympus for sharing!
Embarassed Sony engineers furiously taking notes while replaying video in a loop
It's all protected by patents, and Sony's problem is almost definitely the gyro sensors - they are saving all the money they can in components.
@@Ildskalli sony is rich ass, they will eventually buy the patent anytime soon, only matter of time, i guess JIP will ruin olympus reputation that way..lol
Excellent video, thanks to Olympus and IR for making it!
I can’t help but feel a little sad, though - this is the kind of technical explanation that Olympus should’ve been sharing three years ago. Maybe the company’s fate would be different if they had been this forthcoming and candid earlier.
I don't think it's a matter of them not having been willing to be this forthcoming and candid earlier; it's more a matter of who would tell the story; there just wasn't anyone asking to, and I think it would have been hard for them to tell it themselves. - And when it comes to someone else telling it, there just aren't a lot of ex-engineers working as tech writers/publishers who'd understand it.
I can't say how much I appreciate your (and the other!) positive comments here, I just wish I'd had the chance and wherewithal to do it sooner. I'd like to do more pieces like this, but honestly, this was an unbelievable amount of work. A lot of the work was down to my own inexperience as a cameraman and video producer, so the next piece would be easier, but it took just a crazy amount of time, energy and resources to produce. Who knows, though; I'd certainly like the chance to do more of them; this is exactly the kind of deep-tech explanation piece I most love to do :-) Thanks again for your positive comments!
@@daveetchells338
Thanks for replying, Dave! And I indeed, I can imagine how much work it took, and how a myriad of factors had to come together for such a video to be possible.
Ah well, I hope that you can work on similar pieces with other manufacturers, too - that would be awesome!
Sooo great thanks so much
Thanks for this, very interesting!
Thanks, thanks...
Great video. So cool. I do wonder how much processing power, battery life and maybe heat generation happens because of IBIS. Canon's new bodies are taking a lot of heat right now and I'm wondering if it's because of their new IBIS system.
Data input-output (IO) is what causes the heat issue with the new Canon cams (and any high data rate camera). 8k video passed at high frame rate is an enormous amount of information IO from the sensor to the recording device, which generates large amounts of heat.
@@pwx8460 right but how come the camera is disabling 4k HQ video after 30-40 photos taken over the course of an hour?
@@geoffreyenriquez Hi. I can't say for sure, but recall from another UA-cam reviewer, that the new Canon 4k video is down-sampled 8k video, i.e. still the same heat generation. 4k cameras also have to deal with heat management issues due to the extreme data flow. 8k will just be even more challenging.
@@pwx8460 perhaps canon is just being conservative then? the camera has been doing things for an hour (photos, standby, EVF, IBIS) so that increases the temperature a little bit. once it reaches that increase then 4kHQ, 8k RAW get disabled.
@geoffrey enriquez There are many cameras, including from Pentax and Nikon which use IBIS but do not have any overheating issues at all.
It would have been good if you had asked what a shifting lens element implies for aberrations, bokeh, etc. Regular lens elements must stay in place with micron precision, so how does the IS-correction lens element get away with shifting the image without adverse effects on image quality?
Ah, good question! I think the answer has to do with where in the optical chain the IS element is. The cases where lenses have to be positioned with micron accuracy relative to each other is when you have lens elements bonded together; depending on the lens design, the optical axes of the individual lens elements is sometimes extremely critical. (And this may in fact be a requirement for the individual elements that make up the IS group themselves; there's usually at least two elements bonded together in an IS group.) With the IS group as a whole, though, its job is simply to shift the path of the light rays without introducing distortions. When you look at the lens formulas shown online, you'll note that the IS group is usually off by itself, separated from other lens elements by some gap. I think that's part of what lets it shift the light rays without interfering with the underlying optical performance.
You do touch on a key point with IS of any sort, though: As you start using light rays coming from further away from the central optical axis, you're going to be dealing with areas in which the lens corrections aren't as well-optimized.
It turns out this is why some manufacturers will specify varying levels of IBIS effectiveness with different lenses: Some lenses don't have a large enough image circle to let the sensor wander as far afield in pursuit of the image as others do.
@@daveetchells338 Yes, I'm also convinced that the "image shifting" lens element is very strategically placed. However, as you also seem to indicate, other lens elements will be forced to operate not quite in their optimal range anymore, which should have some impact, independently from any effects the moving IS lens element itself may introduce.
@@coolcat23
AFAIK, and that's not much, these lens formulae are calculated taking into account the effect of the stabilization element in the first place, usually by projecting a larger image circle than necessary in the optical path (that way, it can be "moved" without affecting edge/corner performance too much).
With IBIS it's indeed different, and Canon, for example, have adjusted the possible correction numbers on the R5/6 according to how large a lens' image circle is.
@@Ildskalli Obviously lens-based IS works and produces quality images, I'm not questioning that. I'm just curious as to what the downsides are. With IBIS it is easy to understand that part of the image will be formed using more of the outer image circle of the lens and we know the problems associated with the latter. I'm far less knowledgable about what lens-based IS does to the image. Potentially, the problems will affect all of the image, not just a peripheral region as it occurs with IBIS.
@@coolcat23
There is always a degree of misalignment with IS. Fujifilm were very clear when they said that the XF 16-55mm f/2.8 did not incorporate OIS because they wanted maximum performance - if they had added an IS group, quality would've suffered. They also equipped the GFX 100 with IBIS instead of putting stabilization in the lenses for the same reason.
However, many of the best Canon EF lenses incorporate IS, and that's not only the telephotos (which gain the most from it, and apparently lose the least quality due to an IS group). The 16-35mm f/4L IS was for a while Canon's best UWA zoom, even over the fixed f/2.8 Mark II, and most of their IS primes performed at the highest level (until the RF lenses were unveiled, at least). So, it seems to be somewhat relative.
Who founder of gimbal stabilization (?)
this is an advertisemement: who wants to buy our stabilization knowledge?