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As a Red Epic Dragon owner and someone who owned many Panasonic cameras (Prosumer ones), I think where Panasonic failed is on the form factor of the camera. Its obviously inspired on the Alexa, but lets just say that even Arri had to look at the Red camp for inspiration on its new model. Yes, its the ENG size and most cameramen love this for on the shoulder shots, but for usage in different types of support like gymbals aero, steadicams, cranes (yes, industry high end cope with it fine on traditional mounting and support gear) its just too outdated. The key here would be modularity.
Panasonic should have taken the Varicam brand and targeted it to owner/operators, just like Red did: More sales, more examples of footage. At the same time, endorse a couple of Hollywood Productions. Red established itself with an introductory price of 17500 USD. Very aggressive, but opened the door. Yes, Varicam was an "established" brand- but for TV/ ENG / Documentary. I think Panasonic should've made an effort and been more aggressive on its resurgence in the High End market. Specially because it has such an unique and extraordinary product. Sincerely, would love to use it on my Macau Grand Prix Videos.
No - not possible. "Native ISO" is mainly defined by the characteristics of the sensor photosites, and where a given scene (say with 15 stops difference) just causes one photosite to just respond, and a photosite at the other end of the range to just saturate.
For any given lighting range, there will only be one value of f stop to give this - so only one "native ISO".
I confess I don't fully understand the fine detail of the technicalities, but it's been explained to me that the dual ISO function may make little difference to the final image. The principle is that any given sensor will have a given dynamic range, and the ends of it correspond to minimum and maximum clipping levels on the photosites. Consequently - *to get the full dynamic range* - there is only one useful ISO value the camera may be operated at.
I can see how the analogue circuitry may be optimised for final desired ISO, but - as Noel has said - it can't make a lot of difference. In this case he quotes 1dB.
But surely that depends on what your workflow is? Some users (such as the BBC NHU) seem to have settled on 4K RAW acquisition, to give best possible "digital negative" for any future usage, whilst "here and now" post is done at 2k. With the Varicam's lack of RAW compression, it here shows up poorly against it's main competitors?
I think if you go for the RAW option in each case, it's somewhat more, but maybe that's splitting hairs. It remains it is substantially higher than other cameras such as the F55. And if for something like drama it may not matter too much. But I've tended to associate the term "Varicam" with such as high-end wildlife film making in the past - surely for that type of work power consumption must be of importance?
Noel, it's still coming across as if you think by "two native ISO's" you're interpreting it as two ISO values, with all else equal between them except for a 1dB noise penalty in the ISO5000 mode. It's almost never the case that anyone gets something for nothing - and that's nearly always true in camera design. And so it is here. It may well be true it has two switchable ISO values, it may well be true that the higher has a noise threshold only 1dB higher, but you need to ask - as with offers of "guaranteed 20% pa return, no risk" - where's the catch?Yet, this is exactly what Panasonic has achieved - two native ISO's. It's a big deal.
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To clarify - I meant there is +1db of noise
But what market do you think it is intended for? I've already given the example of the BBC NHU who seem to favour (at the moment) compressed RAW 4K off the F55, but same is true of most drama that may want to use such a camera. And surely higher end wildlife and similar documentaries are a prime market that any camera with the name "Varicam" is most likely to be targeted at? Using the name to appeal to past users of earlier model?On TV / MC / TVC / Feature - the whole process can work right down to proxy. That's nothing new, although the onset capability with reduced cabling, easier process etc streamlines the process. Im not sure how the RAW compression would have a huge effect given the market it's intended for and that would be utilising it.
Well, at some point you have to choose your compromises if weight/cost/size mean anything at all. (And they do.) No, the B4-PL adaptor may not be perfect - but what are the alternatives? A 4K 2/3" camera doesn't really exist at the moment, and there are technical reasons why they may never really come for true high end pro use.Personally I prefer the Sony F55 route where I can get both 4K resolution and comprehensive B4 lens selection via the adaptor. But at cost of light sensitivity and other small optical impairments. Not sure if I want to use a B4 to PL adaptor on the Varicam 35. It defeats the purpose of pristine resolution.
Well, at some point you have to choose your compromises if weight/cost/size mean anything at all. (And they do.) No, the B4-PL adaptor may not be perfect - but what are the alternatives? A 4K 2/3" camera doesn't really exist at the moment, and there are technical reasons why they may never really come for true high end pro use.
So if you do need to use long reach zooms it's true that means B4 in practice - but with a 2/3" or s35 head? It remains that the Varicam HS head is 1080 only (as other native 2/3" camera heads) - the s35 camera heads we're talking about are 4k. I suspect very, very strongly that the total performance of such a lens on 4k s35 via adaptor will always be superior to using it on any such 2/3" head. The resolution may not be "pristine" but is still likely to be better than limiting to 1080 on the 2/3" head?
So once you get into the 4k market at all, then what is the point of the Varicam HS head? Get a Varicam s35 - or any similar s35 camera - and most of the time it may get used with primes and short range zooms (in 4K) - then if a B4 lens with adaptor needs to be used, the results will still be better than on a 2/3" (1080 only) head.
But what's a normal decrease in the dynamic range at ISO 5000 anyway?Noel, it's still coming across as if you think by "two native ISO's" you're interpreting it as two ISO values, with all else equal between them except for a 1dB noise penalty in the ISO5000 mode. It's almost never the case that anyone gets something for nothing - and that's nearly always true in camera design. And so it is here. It may well be true it has two switchable ISO values, it may well be true that the higher has a noise threshold only 1dB higher, but you need to ask - as with offers of "guaranteed 20% pa return, no risk" - where's the catch?
From everything I hear, it's that the high mode sacrifices dynamic range. That shouldn't be taken too negatively - the high mode may still come in useful, but just don't think you're getting something for nothing. And since post may simulate closely the results on other appropriate cameras in the suitable mode, it becomes much less of a big deal...
It may help to think back to more conventional cameras and the issues surrounding nominal zero gain - 0dB. It's no accident that when negative gain was available it was limited to -6dB, or only -3dB on cheaper cameras. At first sight, it may be thought that the only implications of negative gain would be to (beneficially) give a better noise figure, and (adversely) need more light. Unfortunately, not so. Using negative gain may improve the noise performance - but in that case at the expense of highlight handling. It's the principle of never getting something for nothing!But what's a normal decrease in the dynamic range at ISO 5000 anyway?
Let's say your sensor has 13 stops at 100. The same sensor probably won't crack 6 stops at 5000. If so, you may as well get a relatively noise free image there..
Fair point, but it may depend on whether you see such as fitting in a sweet point, or falling between the stools of "normal" XAVC/AVC-Ultra and true RAW. I tend to think more the latter - if you're going to accept going up to that sort of bitrate/filesize, may as well go all the way and get true flexibility from RAW. But that's only feasible with compressed versions......As to codecs, it does have AVC Ultra 444, which should pass for a faux compressed Raw ... except there are no 3rd party editing suits that are compatible with it.
Thanks for the correction. I was eyeballing the GH4/BMD type cameras (which aren't 13 stops either) with a lower native ISO.For a small sensor camera (with small photosites) that figure may be ISO100, when your figures are valid - and which may show why small sensor cameras don't give good results in low light. (ISO5000 would equate to about 36dB of gain.) But for an s35 sensor I'd expect something like ISO640-800 to be the more likely native figure, so ISO5000 to be only 3 - not 6 - stops intrinsically different...
Which backs up what I've been saying. Look at the response graphs and the length of the line effectively represents dynamic range at the sensor. The ISO800 case represents "native ISO" with max dynamic range - the longest line it's possible to have. In the ISO5000 graph, the usable DR is represented by the red portion of the line - it's a remapping of the dotted black line in that graph, the solid black section of the line becomes effectively lost.http://panasonicprovideo.tumblr.com/post/108242733327/happy-new-year
heres something about the dual ISO
I agree with all of that - but don't the F5/F55 (maybe even the FS7 at a large pinch) qualify as "similarly performing cameras", and all of which may be similarly qualified as "4K"? And all cheaper, even with the Aus price reduction?......... the camera produces a very pleasing image and is officially qualified as a "4K" product (whereas Alexa/Amira do not). IMO, many DP's and producers will choose it for these reasons ... unless there's a similarly performing camera for half the price.
ill try to test it on a shoot. not on a DR chart though. one in 800 then one with 5000 with ND filter.Which backs up what I've been saying. Look at the response graphs and the length of the line effectively represents dynamic range at the sensor. The ISO800 case represents "native ISO" with max dynamic range - the longest line it's possible to have. In the ISO5000 graph, the usable DR is represented by the red portion of the line - it's a remapping of the dotted black line in that graph, the solid black section of the line becomes effectively lost.
Result - increased ISO at the expense of reduced dynamic range. (In practice I wouldn't expect it to be as severe as the graph implies, the dotted line should be much longer than the solid.)
Practically, there must be more to it than that - the graph only really indicates the situation in normal gaining up. The second analogue circuit may help in mapping the A-D better for this case, but something must be happening comparable to changing the slope of the line. It's all perfectly valid - but not the big "killer" deal which Panasonic are promoting it as.
But please, don't anybody just take my word for it. If you have access to the camera, shoot a high contrast scene (ideally a DR chart) at ISO800, then switch to the ISO5000 mode and shoot the same scene with the iris down 3 stops.
These are all important but not always quantifiable qualities which make up the true value of a camera.
I'm not for one moment saying that those are "perfect" cameras with no flaws at all (and as far as the FS7 goes I did say "maybe even the FS7 at a large pinch") but at such an early time can we really be sure that the Varicam won't be discovered to have comparable flaws, if it ever starts to be used by many users? I'd still mantain that the lack of any compressed RAW ability to it's workflows alone is a big "hole" in the Varicams abilities for many people. Don't forget that the F55 seems to be by now to be the current de facto choice for live 4k broadcasting - and that largely relies on it's compressed RAW abilities, using that as the link to the scanner.Hrddrive -Have you ever shot with 5/55/fs7?
They are full of holes.. little holes not on the spec sheet, no sound in HFR, dodgy cashe record , soft above 60p etc et etc.
the vari fixes most of them at a price .......
Well, I'm sorry about your brain, but as far as "geeky techno babble" it's damned if you do, damned if you don't, isn't it?ade4all said:some of the geeky techno babble here is making my poor little brain bleed, but the jist seems to be that basing comparisons mainly on spec, the Varicam is no better than the f5.....so where does that leave the Alexa, Amira when they cant even muster 4k? Below the FS7? Ease of use and image quality would to me be higher in importance than nerdy spec sheet comparisons.