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zlfan

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Everything posted by zlfan

  1. according to this guy, om1/em1 3/em1 2 are all line skipping video, even in hdmi out raw, which is unexpected, raw should be pixel by pixel? otherwise, it is not called raw?
  2. I just tried hype, everyday, campaign. I think everyday is very natural, just like the radio anchor voice. amazing ai tech.
  3. I tried jackpot, seems better. there is some excitement. maybe it is a good idea to try different genre of ai voice for different context aiming for different audience. I tried to put the three parameters to the maximum. if it is default, it is one minute transcoding time. whence at maximum, it takes hours and hours. I tried several times and did not succeed once yet.
  4. of course wide dr is good. but using wide dr as the most important criteria, I am not sure. 20 years ago, resolution was the king, it was reasonable, as many web videos were very low res. sometimes I had to stop watching as the res was so low. nowadays, res surpasses the requirement by a mile already. now I watch on my iPod touch, YouTube automatically sets to 360p, iPad to 720p, mac book air/pro to 1080p. I have to manually change every time I watch a video. what is the point of a 6k 8k video presenting on a iPhone? the same as dr, Alexa 35 is great, amazing, 15 usable stops. but the screens do not have such dr stops. often I watch a movie in theatre. it is so great, the dr can be presented by commercial projector. but when I watch at home on tv, on computer screens, I often see the same movie as too dark. I actually like watch news or sports image quality on tv, more than movies. some classic movies are good to present on tv, but many latest ones they are just too dark to my taste, like John wick 4 and earlier episodes. personally, I think stabilization is the most important factor after the resolution. as resolution goes up, very minor shake will cause headache and dizziness. I think Olympus's m43 ibis, Panasonic ff and m43 ibis, are really the most important factor for me to choose a new cam. dr once over 10-12 stops usable is already very good, considering the final presentation computer screen may have a dr of 7 stops.
  5. FORCES THAT UNITE | LUMIX GH7 on Vimeo https://vimeo.com/954374577 out of focus can be smooth on gh7 as long as coupled with vintage lenses.
  6. Is the LUMIX GH7 Ready for Hollywood? (youtube.com) https://www.youtube.com/watch?v=38BErBeS81I these guys just bypassed the best of the gh7 offers, the in camera raw, the best ibis, the c-af.
  7. I am watching the longest day on the YouTube movie channel. it is bw. it is 480p. I watch on my laptop in full screen mode. the close up has no issue on resolution. the wide shots are a little bit softer, but still do not hurt my eyes to stop watching the movie. maybe bw movies have high res than the color ones. I just enjoy the movie, never think about the resolution, the dr, the camera, and the lens.
  8. thanks. will try these. did now see them when i tried. the results are truly amazing.
  9. It is like in the photo world, people with high res cameras are doing printing, because only printing can show the visible difference of the latest high res cams and lenses. also some areas like bus stop standing ads, behind the table photo wall, etc. i think there are some niche areas that still need the latest high res video cams. for web based sharing, the needs are saturated. but the latest video cams, especially the hybrids, have ibis and af, very useful to everyone. in camera raw is also very useful, just for a small sub group of users.
  10. very true points. the latest technologies are for convenience although the image quality already reaches plateau long time ago.
  11. I just tried a sentence of "gh7 is the perfect camera for street videography and event videography." using the female reveal ai voice over. wow. nice. it is not perfect as the tone has no excitement in it, but it is very human voice like.
  12. yeh. I remember the days and nights when I watched the reverie. I don't remember how many times I watched that short film. he later moved to red cameras and aerial photography.
  13. summarizing the tests by Gerald Undone for GH7 and CineD for GH6, GH7 has a usable dr of 12 stops at s/n=2 with dr boost on meaning 4k 60p at most, a latitude of 6 stops at least, 3 upper the mid gray, 3 lower. using Alexa 35 as the reference standard, Alexa 35 has a usable dr of 15 stops at s/n, a latitude of 12 stops. according to my experience on mlraw and r3d, I typically do ettr to 3 stops plus at most, then pull down in post to reduce the noise. I never did more than 3 stops as typically there is not enough available light for this, and ettr works fine enough for 2-3 stops to reduce the noise. although Alexa 35's latitude is amazing, gh7's latitude is good enough for most common scenarios. gh7's 12 stops usable dr is basically at the Sony Venice level. there were so many block busters made by Venice and there was no complain about its dr. good enough for Hollywood features, good enough for me. with its ibis and af, gh7 is a compelling package to me.
  14. what is the dr of an iphone 15 screen? dr of an ipad 10? dr of a mac book air m2? from the data acquisition to data presentation, what is the bottle neck now, in terms of dr?
  15. "let’s have a look at the waveform shooting our standard XYLA21 chart with the GH1 – 8 usable stops are visible: Waveform plot of the 2009 original LUMIX GH1 shooting the XYLA 21 chart – 8 stops are usable. Image credit: CineD 8 stops!? How was I ever able to shoot anything on the GH1 with that seemingly poor dynamic range? Well – interestingly enough, when I now look at some of my early GH1 films on Vimeo they look totally fine to me… it is glaringly obvious that camera technology hasn’t been limiting us anymore for a very very long time. " Panasonic LUMIX GH6 Lab Test - Rolling Shutter, Dynamic Range, and Latitude | CineD https://www.cined.com/panasonic-lumix-gh6-lab-test-rolling-shutter-dynamic-range-and-latitude/
  16. i think s9 is much more enticing, as it is only $500 more expensive than this one, but with the best full frame ibis, and is full frame if only ibis no eis high. if go ibis plus eis high, s9 is s35, but very usable for handheld footage.
  17. is there ai for music? i actually really need beautiful original music for my videos. i like classic music. some music pieces like blue danube, tristesse, etc, will be nice. i imagine that i type in some key words, like strauss, blue danube, and there is some music created by ai similarly beautiful. it is my dream.
  18. af100 has probably the strongest olpf, the resolution and the color are all impacted. but no matter what I do, there is no moire, alias, sharpening artifacts showing up.
  19. pdaf may pulse too. my c300 og is upgraded to dpaf. I used it for continuous af. at infinity for landscape, I can see it pulse. I have to use one shot af to force the lens to stay at infinity, then pan or tilt. for subjects 3-5 meters away during an event, c300 og dpaf works fine, I have not seen significant pulse. c100 mk ii dpaf is much more reliable. at infinity, I don't see pulse on c100 mk ii.
  20. strong olpf has its pros but has its cons too. I feel that the c300 og and r1mx color kind of is impacted. the sensor and the olpf may tune for the skin tones, so there is no issue there. but if you do landscape, the color hue is not as rich as 5d3 and f3. f3 may be the best in the crop. I assume other filters may affect the image quality in a good way, and maybe bring some cons too.
  21. I feel that c300 og has a strong olpf, more than c100 mk ii, but less than r1mx. I think for c300 og and r1mx, there is no need for filters, unless in very special situations.
  22. this guy used pro mist 1/8 on his s5iix and penny 24-70 f2.8. image quality is pretty good. actually, I compare this video to my c300 og video. if doing pixel peeping, yes, there is more details in s5iix. but if looking at the whole picture, the final footage on YouTube (YouTube compression may affect) is comparable on my laptop screen. considering most of the YouTube viewers are using their phones and iPads, I doubt if viewers will see the difference. I think human eyes have certain threshold on image quality parameters, like resolution, contrast, dr, etc.
  23. I think olympus will stay in m43, as olympus is always for small camera bodies and lenses, ever since the film camera days. not sure about panasonic. gh7 is already very mature. gh8 needs in camera nd and 6k 60p prores raw hq to justify upgrading. i will not upgrade to gh8 unless it has nd. i think gh7 will last me at least 10 years, even further. i like to buy gear last very long term, because i don't like the hassle to sell my gears on ebay.
  24. https://www.youtube.com/watch?v=vimrXLkIWmY https://www.youtube.com/watch?v=DFs_pPJeHAs GH7 with some wide aperture lenses seems blurring the background optimally. You can still see the background information, but not clear enough to compete with the talent in focus. This is actually what I want to get when I do events. Total bokur of the background, you don't know if the talent is in a studio or in an event venue. So I think once the bokur fever is gone after the introduction of the 5d2, m43 is ok in this category. for the low light, ff is certainly better than m43. but there was a rule set by a famous photo journalist. he said: if it is too dark, i will not shoot. he took at most two to three lenses with him, 35mm, 50mm. and he used his legs for zooming. i forgot his name. i think as long as you set the boundaries, m43 is a very nice format. i shoot mostly during the day light on streets, ibis, certainly level of bokur, af or mf, these are a good package for me. i know some dps intentionally shoot at very low available light, which sometimes presents very different stories not seen in day light time period. i guess if that is the area to establish, maybe special cameras and lenses are needed, probably medium format cameras like gfx100, working in pixel binning mode to 20 mp or 25 mp, so that huge pixels can have good low light performance, and some really big medium format f2 lenses. even going further, ir camera modes and lenses can be used.
  25. seems to me that in the current paradigm small formats are getting more and more popular, due to the better stabilization and smaller total rig size, m43 cams, 1 inch cams and iphones, half inch go pros, etc. ff really needs to be special to be attractive. personally, i'd be interested in an action cam version of s9, a ff version of go pro 12. i think there is still a big market for serious ff handheld shooting too, as s5ii/x excel(s) now. on the other hand, as people go ff, they actually are more serious and pickier, so gimbal or tripod or monopod may be more suitable or more ubiquitous.
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