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GH5 Panasonic camera, from anticipation to love or hate
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  • @endotoxic

    My rant is about to much years for so little improvement in DR, come on!

    Well, if you understand how sensors work, why you ask so much from sensor of same size?

    The only was to rise DR in normal brightly lit situation is to lower noise as your well capacity is more or less fixed.

    And in GH5 we have so much asked sensor stabilization, and it means thermal noise rise.

    As we'll get GH5 we make sure to make thermal videos of sensor after long shooting session and compare it to GH4 and GH3.

  • cos for my understanding we dont need so much back prossesing at 480fps. so why so much noise then, i dont undestand why so many improvements but no DR from that sensor, well capaciti can be improved by lowering resolution.

    It was mentioned before. less resolution, bigger well capacity. another vwersion shoul be grate.

    end

  • cos for my understanding we dont need so much back prossesing at 480fps. so why so much noise then, i dont undestand why so many improvements but no DR from that sensor, well capaciti can be improved by lowering resolution.

    Minimum resolution they could have is 4K, but as 90% of buyers still shoot videos only from time to time it means big reduction in sales. Proper scaling actually is within few percent of lower native resolution.

    We have FAQ item on this - http://www.personal-view.com/faqs/camera-usage/general-camera-usage-faq#more-megapixels-is-worse-isn-t

  • so sarcastic of you

  • @caveport - on the GH4 you can enable Syncro scan when using VFR so would assume you could just as well on the GH5 (another example of why Panasonic needs to get the GH5 in the hands of people who know what they're doing to avoid terrible footage like this!)- My C2 setting on my GH4 has synchro-scan enabled w/ shutter at 1/119.99 sec (closest I can get to 1/120) and 1080 96fps conforming to 23.98p 1080 since I am based in US and our flicker is on a 60Hz cycle - which is kind of beauty with 180 FPS in North America, you should be able to use a 1/180 shutter if needed for most light possible when shooting at 180fps and as a factor of 60, should cancel out most if not all flicker. Rest of world could do same with 150fps (1/150 sec shutter) with 50Hz electricity - or just bump shutter to 1/200.

  • Besde the flicker in that video, what's going on with all the pixelisation and macrobloking, codec is completely broken. Looks like the poor grading where they pushed it to hard, but still it shows definite lacking of bitrate for enciding so much detail at that high framerate.

  • @philiplipetz

    finally some good hands on camera

    good imagery

  • It seems like improvements in the dynamic range of Micro 4/3 sensors are happening at about the same pace as for other sensor sizes like APS-C.

    For example, if you look at the sensor DR numbers from DxOMark:

    Micro 4/3

    • Panasonic GH2 (released 2010): 11.3 stops
    • Olympus OM-D E-M1 Mark II (released 2016): 12.8 stops
    • Improvement: 1.5 stops

    APS-C

    • Sony NEX-5 (released 2010): 12.2 stops
    • Sony a6500 (released 2016): 13.7 stops
    • Improvement: 1.5 stops

    So basically in 6 years we have seen an increase of 1.5 stops of dynamic range.

    It's true that the APS-C cameras are about 1 stop better than the Micro 4/3 cameras of the same generation, but that's roughly what you might expect given the larger sensor size.

  • @ endotoxic

    Thanks for the background info.

    "My rant is about to much years for so little improvement in DR, come on!"

    DR improvements are mostly sensor tech development and/or sensor size. Sensor development has been slow for many years now. It's not Panasonic's fault that there are no really great sensors for the m4/3 format. It is, after all, a small market segment.

    I'm also a professional, but editor/colourist. I think it's unfair to compare the top end pro camera performance to a "prosumer" mass market Still/Video camera. The results I can get from a GH4/5 are remarkable for the price, even though dedicated video cameras can achieve superior results. I don't mind the Alexa comparison with other dedicated 'cinema' cameras but it's quite a stretch to compare Alexa to DSLR and mirrorless still cameras that have video recording. The form factor alone makes the comparison rather pointless.

    Thanks for the animated discussion!

  • @davedv @caveport I dont understand one thing - are BM sensors gifts of god or aliens from another planet with their 13-15 steps? Im shure they soon will make compact camera from their cropped 4,6k sensor. Even x5s mft cam for copters can make 13 steps and 5k, and shoot in prores 4444xq + raw.

  • This "GH5 on the beach" is very good. I wonder what went on in the dark areas before crushing them in the grading.

  • BM sensors are 12 stops for Cinema cameras and 15 stops (barely) for Ursa. The Ursa body is twice the price of a GH5 with lens. It's time people realised that comparing a dedicated movie camera to a still camera with video options is just plain old f**ing ridiculous. I have seen the images from the x5s and colour graded them on a professional job. The specs look great but the images needed way more work than a GH4 or GH5. There is more to a camera than specs!

  • I'm not sure the sensor used in the Blackmagic Ursa Mini 4.6K is really much better in terms of dynamic range than Sony or other cameras. Even though Blackmagic claims 15 stops, real world tests suggest more like 12 stops of usable dynamic range: https://www.cinema5d.com/blackmagic-ursa-mini-4k-vs-4-6k/

    12 usable stops is about the same as they tested the Sony A7S II and Sony FS7 at. DxOMark reports 13.3 stops for the A7S II (which is a bit more generous). Since Cinema5D is trying to measure usable stops, they are a bit more conservative in their measurements (more on how they measure here: https://www.cinema5d.com/canon-measured-15-stops-dynamic-range-c300-mark-ii/). But the point is the Ursa Mini 4.6K sensor isn't dramatically better than other APS-C or Super 35 sized sensors.

    As for the DJI X5S, DJI reports 12.8 stops of dynamic range, which is the same as DxOMark reports for the Olympus OM-D E-M1 Mark II. Not surprising, as both cameras may be using the same sensor. The one advantage of the X5S is that it's capable of recording RAW video which can sometimes achieve a bit more dynamic than compressed video files. But for RAW stills I would expect the X5S and OM-D E-M1 to be very similar (if not identical) in performance.

  • @davedv all that numbers means nothing. You wrote that nex-5 has 12.2 stops))) Just look on footage and you will see big difference between gh4 and pocket/bmcc dr and color, and HUGE difference between gh4 and ursa 4,6k. A7s log is not usable because of 8bit (marketing).

  • @caveport ///It's time people realised that comparing a dedicated movie camera to a still camera with video options is just plain old f**ing ridiculous./// I do not know any guy who bought gh4 for photo, same a7s. Gh5 is much more video camera than photo, its time to realise this thing.

  • @1917, " I do not know any guy who bought gh4 for photo"

    I bought two GH4's for both photo and video work. :)

  • @Eno You are exactly that guy who i do not know )

  • @1917

    Some people here dont understand that DR can be higher on m4/3 sensors. Then as you said BMPCC "is black magic". Cos when i have worked on those cameras, the sensor size on it throw me more than GHs series. Even on 10 bit. and m4/3 is bigger sensor that super 16.

  • @eno

    GH4 for photos....hmmm ok

  • There are lots of specs to consider but when you look at the image from a Sony 6500 or 6300 and compare it to any Panasonic there's a small but present IQ gap. I would have switched over at the latest upgrade round but I can't deal with the overheating, plus I have a boatload of lenses....

  • Absolutely no reason to not use any m4/3 for photos you live under a video rock if you don't think so.

  • @Scot

    yup i do only video. Though my company represents some pro fashion photographers. Neither of them use m4/3.

    I use gh4 for small projects and do some pictures from the same work at the same time. That is the advantage of the system.

    Personaly the format of the sensor is good enough for video even i have a thread about why i think is the best format cos is the same size of your retina.

    But for Photography you encounter real best results from bigger sensors.

    BUT I RECOGNISE IF m4/3 sensor tech could be applied on full frame size, we would have an exelent results. Better than current ff senzors I Think

  • When I got the GH4 I sold my Canon 7D as the image quality from photos was in my view on par and maybe a little better in the shadows. I have my work on Big & Small Films, TV, Print and the web. Never has a client asked if I shot this on a m4/3 camera. I have had a few clients ask if the footage was shot on an Alexa or RED and I say nope I shoot on a GH4 with an external recorder. They are wow I have to get me one of those. And some footage is just straight out of the SD card. A few years back people were shooting on Panasonic 720p cameras with 10 stops max of DR and they produced award winning TV. This whole BS about DR and specs is just obsession with a specific aspect of a camera that has really no big weight if you want to use it for production. I've seen crap shot on Alexa and RED Epics that is simply garbage and killer footage shot on a GH2, a6300, a7s that ends up on the big screen. And yes I make my entire living from my camera gear. The GH4 brought about 16x it's value just last year.

    Sure DR is always good to have but with V-Log L on the GH5 from what I have graded from released samples is more than enough for my needs. It is actually very good and exceeded my expectations. However I am still not buying the GH5 just yet as the Sony a7s III is just around the corner. I want to see what that RGBW rumored sensor is all about. Once I have all the cards on the table I'll make a decision, it will still probably be the GH5 as I love the m4/3 sensor for easier run and gun focus.

  • @endotoxic

    Any modern interchangeable lens large(r) sensor digital camera is good enough most professional photographic applications, including the MFT format, since it gives you very large set of creative controls and generally very good image quality, except for certain very narrow and specialised applications . Mind you, the 135 film format, frequently addressed as the 'full frame' today, was created as news gathering, more portable, cheaper compromise to the 120 and large format photo standard, and the same issue always persists, what is 'enough' im the compromise.

    The situation that we have, statement that MFT is not pro format in photography comes more from the artificial gaps and margins created by the industry, than by the real value and capabilities of the gear. So without precise definition of the specific situation where the MFT cameras underperform, and how exactly, it is mostly generalisation.