GH5 Panasonic camera, from anticipation to love or hate

Eno

Everybody is trying to push the dark parts of an image to measure DR, but very few also look at highlight DR, which IMO is equally important in the image.

I personally see a very little loss (almost imperceptible) in the GH5 highlight DR from base IS0 200 to extended ISO 100. In fact the GH5 has more rage at extended ISO 100 than the very good D750 has at it's native base ISO 100 (based in Imaging Resource RAW samples).

c3hammer

Maybe for stills the GH5 works with extended ISO, but you get about 6 stops at ISO 100 in video mode. Extended ISO blows about 3 or 4 stops of highlights to white in 4K 60p. I'd highly recommend you test it in video mode before ever using extended ISO on a GH5

Eno

@c3hammer Have you tried setting the luminance levels to 16-235 instead of the default 16-255?

Vesku

@Eno

GH5 highlights burn gradually more and more when going from iso200 to iso160, iso125, iso100 in video mode.

The GH5 noise is so much cleaner in iso200 than in GH4 that the need for cleaner iso100 is not important. When using fullhd crop mode the iso100-iso160 are valuable (cleaner) but you must be careful with highlights.

Luminance levels dont make any difference.

Eno

@Vesku & @c3hammer Thanks for the info.

I was more interested in ISO 100 highlight latitude for (RAW) still purposes rather than video. :)

c3hammer

@Eno, I always shoot 16-235. There is NO highlight latitude in ISO 100 at all. All highlight information is gone in any video mode I've tried it in. There are few youtube video's that show how bad extended ISO really is out there.

Vesku

Iso100 is very good for RAW. Iso100 in JPG and video is crippled. I wonder why it works well in Olympus and in APS-C cameras.

Eno

@Vesku. I've just checked ISO 100 vs 200 on JPG and RAW. In RAW, there's almost an imperceptible loos in highlight detail at ISO 100 but in JPG it's obvious.Very interesting...

Vitaliy_Kiselev

Panasonic GH5 Open Box, $1729

http://www.ebay.com/itm/Panasonic-LUMIX-DC-GH5-Micro-4-3s-Digital-Camera-Body-Black-Open-Box-/192271073037?rmvSB=true

Eno

Eno

Vesku

Does anyone have a computer capable to play GH5 HEVC 6k video smoothly? Is it possible?

Vitaliy_Kiselev

@Vesku

Must play perfectly on even cheap computers with last gen Nvidia cards and proper player, as all GPUs support up to 8K HEVC decoding in hardware.

Grimor

@Vesku if you are using videolan on windows (Vlan player) try this one better: https://mpc-hc.org

Eno

@Vitaliy_Kiselev I've just tested a 6K from the GH5 on an 6 core AMD processor with a nVidia GTX 1070 and several video players. I didn't have any success. I have 0 video hardware acceleration for this, unfortunately and the CPU is to slow for the job. :(

Vitaliy_Kiselev

@Eno

You need proper player tuning.

Make sure to install https://forum.doom9.org/showthread.php?t=156191 , enable HEVC hardware acceleration for Nvidia and make sure player using it.

You can see that even 1050 Ti close to play 8K 60fps realtime.

https://www.personal-view.com/talks/discussion/16921/hevc-decoding-and-nles#Item_15

Eno

Thanks @Vitaliy_Kiselev , I will do some research on the matter. :)

Vesku

"Feature Set H are capable of hardware-accelerated decoding of 8192x8192 (8k resolution) H.265/HEVC video streams GeForce GTX 1070, GTX 1080, GeForce GTX 1060, NVIDIA TITAN XP, GeForce GTX 1050, GTX 1050 Ti"

I have nVidia GTX960 and seems that GH5 6k video has too much pixels for my card.

"Feature Set F Introduced dedicated HEVC Main (8-bit) & Main 10 (10-bit) and VP9 hardware decoding video decoding up to 4096 × 2304 pixels resolution. GeForce GTX 750 SE, GTX 950, GTX 960"

https://forums.geforce.com/default/topic/981372/geforce-basics/which-gpus-support-hevc-a-k-a-h-265-/

Eno

A list of possible improvements for the next firmware ver2.0 update (coming on 30'th august?):

Source: https://www.facebook.com/photo.php?fbid=1292922340816771&set=gm.1748341992132168&type=3&theater

Vitaliy_Kiselev

@Eno

More like bugfix release.

Tomaso

If you bought the camera on the promised 2 updates, what happens if they dont deliver?

Vitaliy_Kiselev

@Tomaso

If you bought the camera on the promised 2 updates, what happens if they dont deliver?

You go to bank to get money you saved for children education and invest all of them into lawyers for hopeless trial with Panasonic that they will be hopefully able to settle for $100. :-)

Scot

@Tomaso Well first think like a lawyer did they promise or plan and what were there clauses for non performance. As we know planning to do something and promising also versus contractual obligation are very different things. If you go back and read the small print you will find yourself SOL.

MikeLinn

Vitaliy_Kiselev

GH5 for $1664 at Amazon Warehouse deals

https://www.amazon.com/gp/offer-listing/B01MZ3LQQ5/

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