GH5 Controlling Blown Highlights with GH5?

[Shirozina]

So based on this thread, seems some tips are

- Shoot in HVG or V0LOG
- Adjust ISO on the fly as needed

What do you think of this video where it is claimed that the H265 codec is the closest that GH5 comes to RAW?
https://www.youtube.com/watch?v=znLS7h2dSXM

Also in the GH5 manual there is mention of the Like 409 photo style using knee compression in overexposed areas? Any advantage to this vs V-LOG?

Thanks again, Brian

'Open gate' is a nice feature but it's not RAW. Also it's got 4.2.0 chroma subsampling vs 4.2.2 of the other codecs. Having said that it's not doing any in-camera image rescaling which in other codecs has resulted in some saying the details are artificialy sharpened so it can look more natural. Post production is harder as 5k + H265 requires a very powerful machine to edit.

 

[NorBro]

But it won't recover blown highlights any better than the GH5 codec.

Once the sensor sites are saturated i.e 'clipped' there is no magic in BRAW or even cDNG that can get this back - what's so difficult for you to understand about this well understood concept of digital capture?

You said "blown" highlights. And blown highlights can be clipped but not always and not everything is visually identifiable (as you can see on page 1 with the CDNG sample).

A reason why RED cameras have something called a 'RAW Clip Meter' - which users commonly refer to as "traffic lights" - is to show you which channel is blown but not yet clipped (until it's clipped).

The meter keeps going up as exposure increases in each RGB channel and then the circles for each channel light up once that channel is clipped.

Yes, any rudimentary photographer understands that once information is truly gone it's gone - even though some software attempts to rebuild it including various advancements in AI technology - but our main disagreement is about which codec has more flexibility in recovering blown highlights better, and it's insane I am even having this conversation.

Unfortunately, it sounds like you do not have the experience to understand.

I would always be the first to say that not all RAW is created equal, but CinemaDNG is some of the best. If you're interested (and did not see it on page 1), download the CDNG file, and import it into Photoshop or Lightroom - or whatever - and see what you can do. (And, yes; you can then turn these stills into video clips.)

If your understanding of RAW and its general tolerance level was how the rest of the world thought about it then everyone would simply be shooting compressed JPEGs.

 

[Shirozina]

You said "blown" highlights. And blown highlights can be clipped but not always and not everything is visually identifiable (as you can see on page 1 with the CDNG sample).

A reason why RED cameras have something called a 'RAW Clip Meter' - which users commonly refer to as "traffic lights" - is to show you which channel is blown but not yet clipped (until it's clipped).

The meter keeps going up as exposure increases in each RGB channel and then the circles for each channel light up once that channel is clipped.

Yes, any rudimentary photographer understands that once information is truly gone it's gone - even though some software attempts to rebuild it including various advancements in AI technology - but our main disagreement is about which codec has more flexibility in recovering blown highlights better, and it's insane I am even having this conversation.

Unfortunately, it sounds like you do not have the experience to understand.

I would always be the first to say that not all RAW is created equal, but CinemaDNG is some of the best. If you're interested (and did not see it on page 1), download the CDNG file, and import it into Photoshop or Lightroom - or whatever - and see what you can do. (And, yes; you can then turn these stills into video clips.)

If your understanding of RAW and its general tolerance level was how the rest of the world thought about it then everyone would simply be shooting compressed JPEGs.

Nice try with the insults and yes this ‘conversation’ is insane.

 

[NorBro]

If saying you don't understand something is an insult then it is what it is. I'm not trying to be mean. And I'm not saying the GH5's codec is bad. I just don't agree with your particular comparison of it with a RAW format (especially CinemaDNG).

And you don't agree with mine.

It's done and we can coexist.