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Vesku

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  1. Vesku
    I shooted some video clips in light festival at Helsinki, Finland. There was fire circus in the dark cold night (-12 deg celcius). GH4 has good dynamic range and I was able to get some details in difficult bright fire flames in the show. With my previous cameras the flames was usually just bright white but GH4 can capture lights better. GH4 has so many useful settings to adjust image. I used 14-140mm II and other settings was 4k 30P f3.5, ss 1/30s and iso500-iso1000. Natural profile, contrast -5, sharpness -2, NR -5, color 0. Shadow/Highlight +2/0. iDynamic Low and master pedestrial +5. I cant share clips but here is some frames down sampled from 4k to fullhd. There is some noise in these frames but when the video is playing the result is quite clean. With GH4 I can shoot with a kit lens at f3.5 in dark places, that is big improvement from GH3 http://***URL removed***/forums/post/55048456
  2. Vesku
    Everything else is better in GH3/GH4 but GH2 has bigger sensor and more resolution. In 16:9 photos 14Mpixels vs 12Mpixels.
  3. Vesku
    I think that noise is the enemy of skin tones. GH-cameras has lots of noise and that may be one reason of dirty or unpleasing skin.
  4. Vesku
    ​Thanks for tips.
  5. Vesku
    What is the benefit of Cine-V compared to natural? I think that natural is flatter and and more "natural" or neutral or normal "life like" looking.
  6. Vesku
    Cine-D gives strange skin tones. I tested it first some time but I have later shooted with natural profile contrast reduced. Cine-D makes orange parts of skin too yellowish like a person suffering some liver desease.
  7. Vesku
    ​Switch to photo mode and see how many photos left. You can estimate the empty space from that. Example: full card 3000 RAW photos, 1000 RAW photos left=1/3 card left.
  8. Vesku
    ​Both have the same 100% sensor image. C4k has more pixels horizontally so you can pan in post more. If you dont use or want the wider image the UHD has little compression benefit. UHD has also framerate benefit of 30P.
  9. Vesku
    ​Some things are impossible to correct. I think that fast moving object across background is one of those. Normal handheld jello and wobbling is well corrected.
  10. Vesku
    New Mercalli is so amazing that we can almost forget that the rolling shutter exists in 4k cameras. Also easy to get tripod-like shots and pans handheld.
  11. Vesku
    ​You can remove rolling shutter jello, skew and vibration with new Mercalli v4. It is amazing. I think it can remove heat waves too from tele shots.
  12. Vesku
    ​ Was the OIS OFF. Looks like lots of hand shake even in wide shots.
  13. Vesku

    GH4 12fps RAW video.

    Vesku replied to a topic in Cameras

    I have not tested this JPG 12 fps very seriously. I found that the OIS in photo mode dont let to pan smoothly, it "glues" the image still and I always shoot handheld. I think that 4k and JPG has the same dyn range and image properties. I doubt if the GH4 JPG photo is 4:4:4 because it is worse than max quality JPG from RAW.
  14. Vesku
    Thanks for review. GH4 needs iso100 video mode to compete NX1 noiseless results. I hope Panasonic will do it in FW update.
  15. Vesku

    16-235 vs 0-255 help

    Vesku replied to Vesku's topic in Cameras

    Computer monitors show 255 levels of each RGB color. If I use my plasmatv in PC monitor mode with my computer it behaves just like a monitor. When a video has 220 levels and then it is expanded to 255 levels in monitor the quality will be worse than true 256 level video. It is still difficult to see the difference if not knowing what to look. 255 has "pop" or "wow" or photo like feeling and tones. I would be happy if some else tests this too. I have no time now and besides I cant load samples here.
  16. Vesku
    4:2:0 or 4:2:2 are not color depth. These are luminance/chroma resolution. 8bit / 10bit / 12bit are color depths and more important when color correcting. I tested GH4 4:2:0 4k video vs 4:2:2 JPG photo and there is almost no difference at 100% sensor center crop. http://***URL removed***/forums/post/54879969
  17. Vesku

    16-235 vs 0-255 help

    Vesku replied to Vesku's topic in Cameras

    If you first shoot 220 levels and then show it at 256 level display the gradations become uneven and not so smooth. There will be missing tones. Example: http://***URL removed***/forums/post/54884851
  18. Vesku
    100Mbs has codec profile high 5.0 and 50Mbs has profile 4.2. So 100Mbs has better (more efficient) profile and double bitrate. It shows in 60P sharp motion.
  19. Vesku
    100 Mbs is better. Less artefacts and noise but still good motion.
  20. Vesku

    16-235 vs 0-255 help

    Vesku replied to Vesku's topic in Cameras

    GH4 0-255 looks much better than 16-235. It is like moving photo quality. 16-235 looks compressed and dull.
  21. Vesku
    The new CMOS correction is very impressive. It corrects rolling shutter wobbling and vibration better than anything earlier. It is though very slow process.
  22. Vesku
    I have tested now the auto batch setting and few own settings. It is time consuming to tweak so that my bad lens OIS (Pana 14-140mm v2) vibration goes away but it still crops as little as possible. I have used something like 35/35& pan and roll and 100% best stabilation but it is not very good still yet. Auto works fine but crops a bit too much. Advanced CMOS settings are so slow that I have not used those yet. Own settings with batch are slow because I must first let the Mercalli analyze all the clips and then assign the own setting to all clips. So there is two long waiting time. Very frustrating to mess with stab programs. I just watched my friends Nikon V1 handheld videos and those were very stable and no need for post stab. The new Mercalli v4 still stabilizes GH4 videos nicely and without converting levels from 0-255 to 16-235 like the previous version v3. I found when I watched my same Gh4 0-255 nature videos stabilized by v3 and v4 the difference is quite big. When 255 levels are converted to 220 levels there seems to be some leveling and compressing of subtle color tones. The V4 0-255 stabilized result is more "photo like" quality and the fine color nyances of nature (greens in grass or reds of autumn) are preserved better. I think the case is the same when shooting 0-255 vs 16-235. If the end product is 16-235 we loose the benefit.
  23. Vesku
    My tests shows that in very dark places with high iso the GH4 NR is muddy and bad looking. GH4 noise is fine black and white grain which looks very "natural" when down scaling.
  24. Vesku
    One more vibrating 14-140 v2 lens:
  25. Vesku
    Now I have tested the demo version of new Mercalli v4. It has good improvements. I can now stabilize many clips with assigning the same settings to all files. There is still not a possibility to save settings. I can now get rid of that micro vibration easily with lots of files. The luminance shift GH3/4 0-255 to 16-235 is corrected (hurray). It is funny because when I asked them earlier about it (v3) they said that the issue not exists but they have now corrected it silently. Rendering is still about the same than earlier and the bitrate goes easily very high with complex 4k scene. There are some new features like NR/sharpening and clip combining. There are also new stab features with very slow analysing but those are optional. I can not say much about stab IQ, I just started using it.
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