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Re: Sony FDR-AX100
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Amazon.com: Seiki SE39UY04 39-Inch 4K Ultra HD 120Hz LED TV: Electronics |
Re: Sony FDR-AX100
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Most people pan at a slow to moderate speed (unless you're doing sports...know anyone like that?). But for most others, good camera techniques will generally not involve whip pans unless... But the point is that with the type of pans most of us do, you simply won't have a RS issue. |
Re: Sony FDR-AX100
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For those wondering about stability when holding the camera, I strongly recommend using something like this: Amazon.com : Opteka X-GRIP Professional Camera / Camcorder Action Stabilizing Handle- Black : Professional Video Stabilizers : Camera & Photo That's what I use and aside from letting me hold the AX100 in lots of interesting positions, it also helps dramatically with stability. Rather than one shaky hand in the middle of the camera twitching every which way, I keep my left hand under the base of that scorpion mount to support part of the weight and my other hand on the handle does the steering. Works really nicely for me, I don't get as tired since two hands are now supporting the camera and with one hand on each end of it reduces typical twitches people can have when one handing the camera. |
Re: Sony FDR-AX100
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I know. Yesterday I did a real coverage of a soccer practice at night with the AX100 on a good tripod and stabilization turned OFF and the panning was good, not perfect like @1080 but pretty good. I was shooting 30p 1/125 4K about the AX100 I had lots of problems with the AF actually (I didn't expect that). It was again at night and the lighting was poor but the AF was easily fooled jumping from one player to another and then giving up. I did the firmware update before the shoot. I'm worried now that Sony did listen to the idiotic complaints about the AF being slow because many are coming from still cameras and used to the instant AF. In video the AF shouldn't be too fast because we don't shoot stills! Unfortunately the speed of the AF on the AX100 can't be changed. The purpose of the shoot of yesterday was to check the panning in 4K so I didn't pay much attention to the AF to be honest, but reviewing the footage I had that result (NOT expected). Again I'll do now more tests just for the AF and I'll report back tonight. I wish I didn't update the firmware because now I don't know if the problem is with the camera or the new firmware. |
Re: Sony FDR-AX100
Filming at night, with poor lighting, following fast moving action is a recipe for an autofocus disaster. Very few cameras will be able to do a decent job in those conditions. Especially with a larger sensor with shallower DoF where focus becomes more critical. I'd suggest you use manual focus if you want consistent results.
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But Under much worse conditions (raining for example) I only had similar problems with the XL1 long time ago. FX1, EX1, EX1r , XA10 never had any problem. The XA20 sometimes jumps for no reason, but rarely. All had a AF speed adjustment feature that I usually set to medium. let's don't jump to conclusions now. Let me run another test tonight. |
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Found a used i7 980 for a little more than the video card and have ordered a water cooler I think I've got a 4k beast now So to summarize the upgrade to 4k shooting, viewing and editing came to 2500 not bad |
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yes 1080 looks great , side by side against a canon XA20 and the AX100 @1080 could pass for 4K in comparison . And it's not just "sharpness".
Well done to Sony abut that but the AF is now a disaster. It moves too soon when the original target is lost, and hunts for new contrast from the next available target, again too fast too soon. Result: lots of "hunting" on low light moving targets. For sports at night is a disaster. Please Sony make it like it was before or put it selectable (fast,medium, slow) : this is a camcorder, not a still camera what happened? this is my idea of what originated this disaster: impostors complaining about features on a camera that don't even have., still shooters confusing this AX100 with their still camera. Idiotic complaints coming for tests in the house shooting AA batteries, dolls and kitchenware. since so many (impostors and dolls shooters) moved the same complaint that the "cut and paste" fanatics posted everywhere then Sony (marketing department) ordered to the engineers to treat the camera as a still camera . This forum is one of the most important and we must stop the nonsense: isolate the impostors (whoever doesn't have a particular camera can't possibly teach others how to use it because they don't know squat about it, cut and paste posters from the internet or other forums should be immediately isolated by the other members of the cvommunity with a warning,. They can create confusion and a disaster like this new firmware for the AX100 I believe that this spreading BS over the internet forums should be regulated. iN my case I have to give up on a beautiful camera because I cant use it for what I do (sports at night) thanks to the impostors and the dolls shooters. unbelievable. @Dave and others with the old firmware: please wait before installing the 2.0 . maybe Sony will put the AF speed in the menu and let us select the speed or simply reverse to the old firmware the entire AF code. @Alister Chapman : did the tests and as you can imagine from this post it was a disaster |
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I'm a bit confused here Anthony. Did you try the AF under the identical lighting conditions, at the same location, PRIOR to the new firmware? I don't recall a prior post stating that.
If not, you can't claim your issues are the result of the new firmware and, frankly, that would be doing a great disservice to those contemplating updating their firmware. Personally I've seen no difference in AF under less than ideal lighting. Beyond that, I don't see how one can reasonably expect an AF on a 4K camcorder to accurately track fast moving sports action in a dimly lit environment. You must use MF for reliable focusing under those conditions. But then again, I'm not sure I'd use an AX100 for sports shooting anyway. As for your theory about why Sony implemented the firmware update as they did, I think calling that a stretch is being kind. :) |
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that's ok. I'm done explaining. The 30p vs. 60p gave me a clear idea of the useless inputs based on stuff heard on the internet instead of field experience. 30p gets even more light than 60p by the way. But I'm done. You don't have to believe me just "tracking" is not the issue Ken. it's the opposite! oh my.. a video tool doesn't have to track anything unless I ask to do so. Again this is a VIDEO CAMERA, not a still camera for pete's sake. Before with the old firmware it took its due time to switch from one point to a new one, and for a reason. that's exactly what a video gear should do. Otherwise it will be hunting ad libitum. But you don't have to believe me believe to noa put who doesn't even have the camera, I'm sure that posters like him will keep explaining in details how the camera works. If it's ok with you guys then it's fine with me. But I want to add something, this time to the tech guys at SONY's : they can't say it but I can .. "see? We told you so!" . to the marketing guys. / I'm done with this |
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Ken; does the autofocus not pump in normal light conditions? I think I have seen some reports about the autofocus pumping but that very well could have been under less then ideal light conditions where you can't expect a autofocus to function right. I also remember from shooting back in my xh-a1 days that 25p as opposed to 50i also showed bigger difference in how accurate the autofocus was, an explanation given then was that in 50i there are more frames per second the camera could use to judge focus from and since in 4K we all are shooting either 24,25 or 30p that might be a reason why the autofocus gets fooled easier compared to shooting in 1080p 50p, maybe Alister knows if this is the case? I know my cx730 holds autofocus pretty well but if it looses it it can go lost completely and has a hard time recovering, I use manual focus whenever I can but during run and gun I often let the camera decide, what matters most to me is that under normal light and when you are shooting wider the autofocus doesn't hunt or starts pumping, does the ax100 perform well under such conditions? |
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Otherwise it's just pure conjecture. I haven't heard of others noting this same deterioration under low light conditions, after the update. Is it possible? Of course, but I prefer a more scientific approach. As for tracking focus, I'm sure you know that that's something that can be turned on or off. So yes, the camera won't do that 'unless you ask it to'. |
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It's not lightning quick, but it's quick enough and not visually distracting as it goes from one focal point to another. Do you get an occasional miss? Sure, I've yet to use a videocamera's AF system that didn't. But I do think I get less misses with this than most other cams I've used. For me, it's behavior is very nice for run n gun. As for low light focusing, it seems pretty average in that respect. As expected, the lower the light the more you can expect some hunting. But at that point we should be using MF anyway. ;) |
Re: Sony FDR-AX100
The AX100 autofocus is contrast based, so low contrast (low light, high gain, longer focal lengths) will give the AF problems. Generally the faster the frame rate the quicker the AF can operate, but there is a trade off in low light of slower shutter speed giving a brighter image and a higher frame rate with shorter shutter giving more samples but maybe with less light.
However a camera manufacturer sets the AF speed there will always be someone that's unhappy. Some people want snappy, rapid AF that will quickly find focus, others may want sluggish AF as they don't like quick focus changes. Hunting is normally caused by the camera simply struggling to find an object with enough contrast or texture to provide an accurate focus point or nothing staying at the same place within the frame from frame to frame. After all the camera must compare the previous and next frame to decide whether the focus result is getting better or worse to determine the best focus point. Contrast based cameras must hunt and go through focus to determine the best focus point. Camera gain and noise is also a real AF killer. Low light sports is probably just about the worst possible scenario for AF. Add the large sensor and shallow DoF that make accurate AF even tougher and it's no surprise that the AX100 has a tougher time of it than cameras with much smaller sensors. I would suggest that the AX100 is probably just about the worst camera you could get for shooting sports with AF. What's the point shooting in 4K when most of it's going to be out of focus anyway, you really are going to need to learn to focus manually, 4K needs incredibly precise focus to be of any real benefit. Better to use a small sensor where the deeper DoF will hide focus inaccuracy if you want to rely on AF in anything less that good light and high contrast. It takes Sony a long time to write a firmware update. Weeks, if not months as it must go through Sony's tough QA process before release. I expect the V2 update was being prepared even before the first cameras had shipped. This is common these day. Get a basic set of firmware working so you can bring the camera to market asap, then work on improved firmware with those small subtle tweaks that can take a long time to get just right and release this later on. I have not notice any difference in AF between V1 and V2 (but then I don't use AF very often, it's too unpredictable). |
Re: Sony FDR-AX100
Thx for the info, I was only worried the camera focus would start hunting when the lens was wider and when light conditions where about average, like in a church. As soon as I start zooming in more I switch to manual but I need the camera to refocus first for me, I usually use the touch focus feature for that on my cx730 as I don't trust my own eyes for critical focus, it's is pretty reliable but not always.
I do find it very difficult to focus manually when shooting 4K and just being slightly off sticks out like a sore thumb when you view it on a large screen. It will take me some time to build up the necessary funds to get the ax100 but having shot at 4K on my GH4 has me sold on the cropping ability which is really awesome, if used the right way, once you cop all other artifacts get magnified as well, like noise or microshakes. But I really need a more video oriented camera that can replace my cx730's, the GH4 requires hard work to get good footage out of it when running and gunning, it looks great if used right but slaps you in the face if you use it wrong. :) 4K can be very unforgiving. |
Re: Sony FDR-AX100
I have posted these before. Talk is cheap. Video shows you what works, and what does not.
Here is a test of the autofocus speed and accuracy in good light: Here is a test of purposeful focus tracking - when the camera is asked to track, again in good light: Both tests were carried out after the firmware upgrade. You can *see* what the camera does, and like it or not - too fast? not fast enough? miss the bounce you get with other cameras? I may post similar tests in low light, but people appear to prefer to argue rather than look. |
Re: Sony FDR-AX100
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Pre-upgrade, I noticed that the firmware version was not available anywhere in the camera menus, though the update instructions said that it should be. A bit of Googling suggested that this was a sign of pre-1.0 firmware, so perhaps that's the cause? *shrug* The updater software said I had 1.0, but perhaps that's simply the smallest number it ever displays. Whatever the cause, I'm very pleased with the 1080p60 out of the camera now. |
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Very good. You made a great presentation of the AF . Well done @Noa well, you made a very good point that I will follow. Even if you don't have the camera I appreciate a contribution like that. Staying wide(r) is the key. You too well done @the forum I'm sorry for coming out like that, it was a stressing experience yesterday, I was a bit frustrated and I moved "stuff" that didn't help at all. I had to find something to blame, it was a childish reaction and for that I again apologize. Reviewing the clip again this morning (1hr long) I can see first of all that AF and 4K are a difficult mix, in particular in low light, sports, soccer where the players move fast, when pan and zoom are often used at the same time, and sudden changes happen often. Like Noa said the key is to stay wide(r) than when I shoot 1080. Is it workable? (the AF of the AX100 in 4K I mean): yes it is. Guys please understand that I am a cameraman, that's what I do: I don't go deep in technical stuff but I look for a way to make it work, which is sometimes a very different approach. I wanted to produce in 4K because it's beautiful . I was ready to do anything to achieve that. And I sill am. The debut of the AX100 in 4K doing an entire soccer game is a week away now, Still trying to figure it out, I want to make this 4K at night happen and rest assured that I'll do whatever it takes to make it happen. @Mark again : you made it easy to see for everybody in just 1 post while I was struggling pointing out that a camcorder doesn't have to jump between targets too quickly : every time I hear that the AF of the AX100 is slow I jump off my chair: it's the way video cameras work , and again and for the last time this is a camcorder, not a still camera. The AF MUST keep the last target until a new target comes in. If not the old target will be lost and nothing will be in focus. Also the transition should be gentle, no jumping from there to there, Mark made it very clear in his video. So for now we have the following: lanc with 8 constant zoom speeds solved (usung a vivitar 8-button via multiport with 10-pin adapter) 30p is fine for 4K in night soccer at least. speed of 1/125 is also working great. (extremely high definition with no ghosts around the players) it looks quite good actually, no I mean it looks unbelievably good! AF is a challenge, stay wider, don't zoom too much as I usually do. It should be fine Panning : the less is better. I'll have to be extremely careful with the panning. It's workable, definitely |
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Really shouldn't move the camera much at all .(A famous director cliche once said "let the world walk through your frame" or something like that.
.however that will require a mutli-camera live -switched production which is much easier to do than it sounds especially for something like soccer 2 or 3 almost locked down cameras covering the centre of the field and endzone cams behind the the nets.Would make for a network like production. It can all be handled by 1 cameraman |
Re: Sony FDR-AX100
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Overall I haven't noticed that much issue with focus hunting although I think much of that is because of how slow they have the focus speed set at. If focus speed were set as lighting fast I'd be willing to bet that there would be focus hunting present sometimes, but as it stands it's not something I have noticed much in my real world use of this camera. Personally I like the focus speed because it makes for nice transitions, but everyone will have their preference there. What is more of an issue is focusing on the wrong target. This of course happens when I get into situations where the sensor dips into 15db but what can I do, that can happen with run and gun type situations. But even with better lighting I have noticed that sometimes it will focus on the wrong target. For example I had a face in the middle of the display with both eyes visible, but instead the camera was locking onto a small patch of wood grain in the background presumably because either face detection failed or because the wood grain pattern had more contrast. Or I'll have cases where 80% of what is visible is all at a certain distance and where I want focus to be, but it will grab a small contrasty pattern far away and lock onto that. This only happens sometimes and under my "normal' lighting conditions so I need to start using the touch-to-focus feature on future shoots to help the camera out when that happens. Overall I am still happy with how the AF performs because I realize my lighting isn't optimal and that's just how contrast AF works, and ultimately for the most part the AF is correct. I had similar issues with the NX30 but it was less noticeable of course because of it's small sensor size. I'll probably switch to 3 Nova lights on future shoots rather than just 2, that should help out somewhat. |
Re: Sony FDR-AX100
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the 1080 on the AX100 is now almost as good as 4K (almost) and better than anything I saw before IN 1080. The AF in 1080 is also solid , rarely lost the target like it does in 4K . The new firmware did it, no questions. But I am concentrating on 4K at the moment. Shot 1080 only to compare with another 1080 camera and the AX100 came out literally like it was 4K in comparison. I had to double check if it was actually set @1080 (seriously) when I saw the difference. |
Re: Sony FDR-AX100
Peter; the nx30 should be comparable to my cx730 in the way it operates, I also have some older sony xr versions (a xr500 and a xr520) and the touch focus f.i. locks on much quicker and is also much more reliable then my cx730, I always need to double check with a loupe, it has happened more then once that the touch focus refused to lock on a person while I was zoomed in if there was a higher contrast background and I really need a camera that at least can focus right when use the touch focus feature.
Is it easy to use the focus ring and focus manually with peaking enabled? in 4K there is hardly any room for error. |
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Amazon.com : Sony CLM-V55 5-Inch Portable LCD Monitor for DSLR cameras : Camera & Photo I used one briefly for a while when I had a VG900, from what I recall you could leave the on camera lcd as normal and set that external 5' lcd to magnification mode with peaking, so it could be purely a focus assist tool where you use the camera lcd just for general framing and then the large lcd for focus. I presume this would also work fine with the AX100. |
Re: Sony FDR-AX100
Having an external monitor would not work for me as I would like to keep it all as small as possible but would ofcourse be much better for accurate focussing which is important in 4K, I had one soft image during the photoshoot from last wedding with my GH4 when I shot at 4K and I didn't notice during recording, only afterwards in post and that shot was not usable. Having a separate focusring and being able to use peaking on the ax100 does give at least the option to easily go manual when needed. I read that both the lcd screen and viewfinder are very sharp so that should help as well. Anyways, will find out once I get the camera, hopefully prizes have gone done a bit by then :) Thx for your helpful responses.
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Re: Sony FDR-AX100
You heard correctly, Noa, the viewfinder and LCD screen are very good on the camera. You won't be disappointed, except that you may regret that you waited so long to buy the camera. It is FUN to have such a large resolution image, you will love it.
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Re: Sony FDR-AX100
I know Jeff, I already am starting to work with 4K on my GH4 and the cropping ability without any visual quality loss has proven to be much more useful then I expected, problem is my funds have dried up :)
I was thinking of using the gh4 in combination with the ax100 which should cover most of my needs and to sell my 2 cx730's, any takers here? :) |
Re: Sony FDR-AX100
I know sometimes a topic gets a little "hot", sometimes members come here to vent frustration (one sub-forum has a "special" place for that even!), but do try to be a bit more thoughtful and respectful, perhaps you will learn more and a bit faster. Generally even when we disagree, we're polite and gentlemanly about it!
A good "cameraman" learns as much about the TECHNICAL aspects as they can - makes them a BETTER cameraman, no matter WHAT they shoot with. As much as we'd all like "auto" cameras that get the perfect shot every time... it doesn't work like that... and many of us here know quite a lot about the "tech" side of things, either in cameras or other related industries. As an on topic example, I can't recall ANY camera I've ever owned that didn't decide to "focus" on the "wrong" thing at one time or another (usually the worst time!)... locking on the background when I wanted the foreground, or the foreground when what I wanted was in the background... or center frame when I wanted right, and so on! Tracking can help. face recognition can help, touch focus can really help (at least the camera has a clue of what you're thinking)... bad light is ALWAYS a challenge, peaking is an option for manual. Prior experience with other similar cameras is 100% applicable! Still no luck uploading pics of the MiShoe adapter... haven't forgotten... and I still haven't gotten around to firmware updates, I WILL do a little test shooting first, would like to see if I can confirm the AF and 1080 upgrades... not that it will matter if they don't "work", as there's no "backing out"! I've never had a problem with Sony FW upgrades though, and the 1080 improvement has me "intrigued"... can I get me some 60p that is "almost" 4K?!?! Got to clear some time to find out! We've therorized, and I've seen in practice that sometimes Sony can squeeze more out of a sensor as they work with it more (yeah, sometimes it's in the "next camera"... bleah). Now where's those RX updates, darn it!? I'm hoping the 2.0 firmware doesn't leave the image quality from those cams even further behind... |
Re: Sony FDR-AX100
MODERATOR NOTE:
Ok, I'm fed up with the ad hominem BS and the amount of my holiday weekend wasted in cleaning it up (I've removed at least a dozen posts totally and edited perhaps half a dozen more due to flaming or retaliatory commentary). Thread closed until Obstreperous Rex reviews. PS: If anyone posts anything out of line, THAT IS WHAT THE REPORT POST BUTTON IS FOR (the little red triangle icon in the lower left of a post). Please do not feed the trolls! |
Re: Sony FDR-AX100
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Re: Sony FDR-AX100
That would be great, this camera has generated a lot of interest it seems, positive and negative :)
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Re: Sony FDR-AX100
Maybe lump all the very similar cameras into one forum, the new XDCAM shown at Broadcast Asia, the AX100 and the CX900 all appear to be based around the same internals.
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Re: Sony FDR-AX100
The eyecup of the Panasonic AG-AC90 fits perfectly on the VF of the AX100 . Unfortunately is currently out of stock @ panasonic service parts
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The ax100 just went down from 2000 euro to 1700 euro in Belgium! (that's with 21% tax included) Glad I waited a bit :)
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