HDR and 16 bit?

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HK Photographer

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Sep 16, 2021, 12:59:38 AMSep 16
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I am currently working with a HDR panorama and I realized photoshop and lightroom raw filters are still very limited when dealing with 32 bit files.

So I decided to output my HDR panorama to 16 bit instead. I don't believe there is an option to do so if I want to select an option under HDR:

1.jpg

Is this because outputting at 16 bit defeats the purpose of using HDR?
 
If so, what is the best path moving forward if I want to output to Photoshop for additional processing?


PTGui Support

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Sep 16, 2021, 2:23:34 AMSep 16
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Hi,

If you switch to a 16 bit output format (eg 16 bit tiff), disable
exposure fusion and disable tone mapping, you will get the equivalent of
the HDR output in a 16 bit image.

Take care not to overexpose the image. A true HDR image can be
overexposed above 1.0, but a regular image will be clipped.

Btw the Blend Planes output is disabled here, probably because you have
used images in Automatic Exposure mode. The 'i' icon will tell you more.

And don't confuse HDR and tonemapping. A HDR image contains the full
dynamic range of a scene, but is not suitable for viewing or printing.
Tone mapping compresses the wide dynamic range to a good looking image.

Kind regards,

Joost Nieuwenhuijse
www.ptgui.com

On 16/09/2021 06:59, HK Photographer wrote:
> I am currently working with a HDR panorama and I realized photoshop and
> lightroom raw filters are still very limited when dealing with 32 bit files.
>
> So I decided to output my HDR panorama to 16 bit instead. I don't
> believe there is an option to do so if I want to select an option under HDR:
>
> 1.jpg
>
> Is this because outputting at 16 bit defeats the purpose of using HDR?
> If so, what is the best path moving forward if I want to output to
> Photoshop for additional processing?
>
>
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Philip Chong

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Sep 16, 2021, 10:46:21 AMSep 16
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What I do is take a few brackets and use luminosity masking and choose select exposure (hlghlights or shadows) to mask onto my EV 0 photo.

A HDR/RAW have at least enough stop to do EV -1.5 or +1.5 either way, so you dont need brackets.

Does that explain not doing tone mapping or HDR ?  What can you do with a HDR of EV -10 and +10 ?  No use!

Make sense?

Erik Krause

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Sep 16, 2021, 11:56:10 AMSep 16
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Am 16.09.2021 um 16:46 schrieb Philip Chong:

> What can you do with a HDR of EV -10 and +10 ? No use!
image based lighting...

--
Erik Krause
http://www.erik-krause.de

Erik Krause

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Sep 16, 2021, 11:56:41 AMSep 16
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Am 16.09.21 um 06:59 schrieb HK Photographer:

> I am currently working with a HDR panorama and I realized photoshop and
> lightroom raw filters are still very limited when dealing with 32 bit files.

What exactly do you want to do?

For which purpose do you need HDR?

What do you mean by "raw filters"?
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