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Eric Calabros

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Posts posted by Eric Calabros

  1. This h.265 "same quality for half file size" slogan is just true about ridiculously low bitrates, above 100Mbps you gain nothing over h.264 quality wise. 

    Kaby Lake encodes/decodes it with full-hardware acceleration, but we don't know yet how efficient it performs the job compared to doing the same with h.264. and just because hardwares are ready, doesn't mean softwares are also ready to use them to their full potential.  

    I think 400Mbps is not enough for 48fps. since its ALL-I, for every frame there is only 1MB room. Its a bit low for a 9 megapixel image. 

  2. I think Nikon applies different color curves in different WB ranges (maybe Canon is doing similar thing too). We don't know these curves well and where exactly they come into play. they intentionally shift some hues as WB changes, to make the image look Ok. so AWB in these cameras is not just about accuracy. 

  3. On 11/22/2016 at 8:25 AM, mercer said:

    The 2:39 scan would be cool, but you're right they'd never do it... I don't even think it would enter their minds. If they would just offer focus peaking, I would be elated. 

    Most of decoders have issues with non standard resolutions. 

  4. On 11/20/2016 at 3:06 AM, Policar said:

    If that's what Dolby is saying, it's ridiculous. Step outside during a sunny day and you're exposing yourself to brightness far in excess of 10,000 nits all around you. Orders of magnitude brighter. Having seen 10,000 and 4000 side-by-side I can confirm that neither is fatiguing, even in indoor light, though you might choose to turn brightness down at night as you would with any display. And simply because a display can get that bright doesn't mean it will. It's like saying 8k is too sharp. It might be unnecessarily sharp, but you can always show a less sharp image. Only very small parts of the frame ever get that bright.

    Dolby, who doesn't have a horse in this race as Philips does (hardware manufacturers want lower levels to be perceived as preferable so they can sell displays before technology advances, whereas Dolby just wants to have the best standard that will eventually get adopted) has found that 10,000 nits is what 90% of consumers consider "adequate." Based on my experiences with HDR, I wouldn't consider anything below 4000 nits even "true" HDR (though it might still be quite impressive) and 10,000 nits for me at least is the baseline of what's ideal, similar to how I think 2k or 1080p is an ideal "good enough" resolution. Anything beyond that is great but diminishing returns and only really appeals to that last 10%. Of course, 2000 nits will still look much better than 100, which is the standard now. It's considerably more than halfway to 10000 in log base 2.

    As regards future proofing, I don't think any camera I have will come close to matching HDR spec so I don't worry about it. The C300 Mk II with the new SLOG 2 upgrade is the cheapest thing on the market that is HDR-ready, and it was actually designed as such. 

    Well, I dont watch movie "outside during a sunny day". 10000 is too much in a relatively dark room. Its like 10W LED torch flashing unexpectedly right in front of your face, while your pupil is still wide open. Besides, its not commercially feasible yet, and probably won't be in next ten years. 

    You have three wrong assumptions there, first you think HDR is only defined by a group of cine-geeks in Los Angles, and they're the only ones who determine what is HDR and what is not, based on their wishful standard. BUT, they just set their own limits, their own road map. they don't write bible. Second, you think 15 stop is always necessary. No it's not. in almost 95% of situations, the whole scene is fully covered by only 9 stop. We don't always point our lens towards the sun. Third, you believe C300mark2 is a 15+ camera! Sorry, its not true. Lecture us as much as you want about its color science, but DR? No Thanks. The king of low noise floor in DXO list is Nikon D810, and its just 14.8ev at miraculous ISO64, but "useful" DR is only 13.5. because they measure down to 1:1 SNR, which means the floor where for every piece of data, there is equivalent piece of noise, which means garbage quality. in big-pixel sensor, it tends to be even worse. I think RED and Canon use some temporal noise reduction tricks to clean that, but as any NR practice, sacrifices resolution and color accuracy. 

  5. If I remember correctly Philips research showed that people can't tolerate 10000 nits. Yes its breathtaking for first minute, but after that you feel its destroying your eyes. 4000 was acceptable, and 2000 was most preferred. 

    At the moment, we only can do this to future-proof our work:

    Shoot log, 10bit, widest color gamut available. Underexpose to save the highlights but be careful that unavoidable clipped highlights stay very small part of the whole image area. 

  6. I'm really happy that people are no longer interested in dedicated camera.. tourists (who have no clue what exposure is) holding DSLRs set to Auto mode.. it was always like an insult to me. No I"m not snob or something, I just say it was wrong since the beginning. 

    At the other hand, the company that makes gears I want, is so dangerously addicted to consumer market cash flow, and has no clear plan for healthy less- painful transition. 

  7. If you saw 90% of liberal MSM was hoaxing, shamelessly make up stories, obviously lie, constantly fear mongering, and silencing any opposition with racist and sexist labels, and you realized we need to revolution just after seeing one single wrong headline in an alt-right website, you're part of the problem. 

    Btw, did you know even Scandinavian industries are supporting Saudia Arabia military? seems not much less-ignorant nations to me. 

  8. 5 hours ago, joema said:

    Re the article statement: "Canon IS not as effective as Panasonic’s sensor-based 5 axis image stabilisation and Dual IS"

    Having shot many hours of documentary video on both 5D Mark III using 70-200 f/2.8 IS II and the A7RII using 28-135 PZ cinema lens, that is not my experience (with Sony). In general I found the lens-based Canon OIS is overall better than the Sony 5-axis system, at least using the above lenses at similar focal lengths.

    The Canon system only stabilizes pitch and yaw, whereas Sony splits the burden between sensor which does roll+translation and the lens doing pitch and yaw. Despite this my informal video tests show I can hand-hold steadier video with the Canon.

    Maybe one factor is I'm usually using Super35 on the A7RII and maybe that somehow degrades stabilization. I have never read any article or review analyzing the effect of Super35 on Sony's 5-axis system, but it seems to not work as well in that case.

    in tele ranges, optical IS works way better. Even Olympus had to admit that. 

    1 hour ago, OliKMIA said:

    Hi Andrew. I totally understand your point of view and I find this website very interesting. Even though I'm still "eating" to regular tables such as DPReview and other mainstream websites, picking the dish I like and ignoring the rest, I'm always curious to check your food. I know that your house will be different, a bit "bi-polar" sometime but always refreshing, free of any marketing interest and willing to be commercially incorrect in this huge ocean of product placement and influencers that internet has become.


    For me Canon got a few interesting features (colors, DPAF) but the Cons are just too much for the price. However I have no religion in terms of gears. As long as you are comfortable with your Canon and others are satisfied with Sony or Pana, I totally respect that and will not do any proselytism.

    That being said, I'm kind of confused by your Spanish video here. Looks like a video I could have made in 2 days back in the days when I started with my T3i. I mean the contrast, expo, colors, cuts and all that. I'm not attacking your skills, I'm assuming you make a living out of it and you surely have way more experience and knowledge than me but showing this type of video to illustrate a high end DSLR review is surprising. Perhaps this is what people are trying to say here.

     

     

    You need to see "The Forbidden Room" movie. Form, determines the image quality, not the other way around.

  9. 19 hours ago, Gregormannschaft said:

    Maybe this has been said already, but what happened in England with Brexit and in the States with Trumps election is the need for serious filmmakers to undertake projects that will create empathy between two groups in society who refuse to understand the other. There's a need for compassionate research and an open ear, to understand why people are attracted to Trump's vile statements. I don't believe people are inherently racist, homophobic or xenophobic and nor do I believe all Trump supporters/Brexit'ers are - that stereotype must be destroyed. 

    I was at a party a few weeks ago with a lot of doc filmmakers and I was surprised at how angry they were and how quick they were to label supporters of Trump as, basically, idiots. What doc filmmakers have here is an opportunity to heal and to give voice to a lot of people who feel cut off from the privileged. I just hope we don't go about this in a condescending newsy way.

    Doc fimmakers can't fill the serious exponentially widening culture gap. few days ago I was reading a debate in a comment section somewhere, one of them asked: "How you explain 11 million illegals working in the country, go to college for free, and even vote!?" The other one replied: "we shouldn't be like Canada, protecting needy people is more important that protecting laws and standards!" 

    They're certainly living in definitely two separate worlds. 

  10. "We can't afford such a big construction project" or "We need also a revolution in policies", is different than "Technically, Wall Doesn't Work". because it does, at least in middle east. Security barrier, never means hundred percent blockage. You build barriers to make invading slow and costly. Its 7000 years old fact. Opium is dirt cheap in southern Asia because they can transit it fast, with little effort and inexpensive. 

    However, even if the wall is not a solution for this American problem, opposition should offer their truly working alternative. By making it a race issue (which is irrelevant), they just terminate the discussion. When discussing is systemically terminated, an opportunist has to use unorthodox narrative to put the topic on the table again. a short controversial youtube video insulting Sony enginners that fail to address color issues gets more attention that another one which tries to scientifically explain whats wrong with the log profiles and what should be done about it. Its 7000 years old tactic. 

  11. 6 hours ago, tigerbengal said:

    you don't get it right? it is not about hate or fear....how much will it cost? BILLIONS...for nothing, they will just make a tunnel and surprise...billions wasted, and what about the commercial war with china and mexico? our economy will sink like it did when bush was in power, do you remember? yes they were REPUBLICANS.

    at the end of the chaos who paid for everything? we the people, our pockets !!!, no more money for new cameras or lenses

    Look I'm not saying its a good or bad idea, but your assumption about border walls is wrong. Israel made a huge one, and its unbelievably effective. Even Palestinians admitted its very effective, and they are master of tunnel making. 

  12. 2 hours ago, BookMark said:

    since nothing he said is true or can be fact-checked, then it may actually be a good sign he will do some good. for one, he is unlikely to build a wall....

    the question is, will he get his way? his party isnt exactly on the same page as him. my guess is that, he will actually spend way too much time fighting his own party and gets nothing done (abit like that coalition party [tory and lib dem] in the UK). 

    (i dont follow politics keenly)

    Why so hate and fear about wall? Its against chaos, not against race. Besides, it will need high performance surveillance cameras for every kilometer. That alone can boost Sony's sensor sales :-)

  13. The next body after D5600 will be D810 replacement, releasing at CES, which will be probably 50+ MP camera. with this huge resolution, 4k without pixel binning is impossible. Though Nikon algorithm for demosaicing binned data is better than Sony's, but its still binning. 

    With Canon 6Dmark2 rumor that certainly says "No 4k", I'm afraid Nikon follows it and keep D760 a 1080p camera. But there is still hope. Best window for announcement would be February at WPPI show. 

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