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Opening a RAW image as 32 bit file

New Here ,
Jul 11, 2020

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I want to open a .NEF as a 32 bit image. Is there a way to do this? Can I save it as a 32 bit image? 

 

I do know how to open as 16 bit conversion.  However going to 16 bit and then selecting Image>Mode.32-bit is not what I'm looking for.

 

Regards,

"Cincinnati"

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Opening a RAW image as 32 bit file

New Here ,
Jul 11, 2020

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I want to open a .NEF as a 32 bit image. Is there a way to do this? Can I save it as a 32 bit image? 

 

I do know how to open as 16 bit conversion.  However going to 16 bit and then selecting Image>Mode.32-bit is not what I'm looking for.

 

Regards,

"Cincinnati"

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Feature request, How to, Import and export, Mac, Windows

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158

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Adobe Community Professional ,
Jul 11, 2020

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Neither Lr-Classic nor Photoshop Camera Raw Preferences give an option to open raws as 32bit RGB.

A raw NEF is what it is (as set by the camera)- you cannot 'save' the raw data in any other bit depth .

 

 

Regards. My System: Lr-Classic 9.4, Lightroom 3.4, Photoshop 2020 (21.2.1), Nikon DSLR, Windows-10.

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New Here ,
Jul 11, 2020

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Thank you. An instructor in 2018 said when He converts RAW using ACR from Bridge, the files open in 32 bit. He does all his original processing in 32 bit and then saves it as a DNG (16 bit). I was hoping in the two years since, Adobe may have provided a means of saving 32 bit.

 

How do I open the RAW conversion in 32 bit ( or has that feature been removed?) I can't seem to find a setting for this.

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Adobe Community Professional ,
Jul 11, 2020

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I would be pleased if other Photoshop gurus could add to this thread.

But here is what I know.-

- An NEF raw file cannot be changed in bit depth.

- Preferences for Lightroom, Photoshop and the ACR plugin, both only offer to open a raw file (.NEF, etc)as a .PSD or .TIFF in 16bit (or 8bit), even if opening through Bridge (Bridge uses the ACR Preferences). I do not know if this differed in the past.

- You can convert the .PSD or .TIFF to a 32bit in Ps and Save the file as 32bit from Photoshop. It will re-open as 32bit.

- You cannot 'Save as' a DNG file as a raw format from the .PSD or .TIFF in Photoshop.

- If you 'Convert' the .PSD or .TIFF to a .DNG in Lightroom then you are only placing the .PSD or .TIFF in a different file "wrapper". You are not saving the file as raw data.

- If you try to open a DNG derived from an embedded .PSD or .TIFF then Lr, Ps, Br, all treat the file as a 'raw' file and again the only options are 8 or 16bit.

So to edit in 32bit, it seems you can only change the Image Mode in Ps after opening, and you can only preserve the file as 32bit if you Save as .PSD or .TIFF.

Even a 32bit HDR file created in Lightroom from multiple images opens as 16bit by [Edit-In] Photoshop.

 

Regards. My System: Lr-Classic 9.4, Lightroom 3.4, Photoshop 2020 (21.2.1), Nikon DSLR, Windows-10.

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New Here ,
Jul 12, 2020

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I hope I'm conveying my question accurately.  

I understand I'm not adding information by opening a RAW 14 bit per channel capture in a 32 bit per channel package.  But some of the processing I do will expand and create information beyond the 14 bits of captured information. I want to post process as much as I can in 32 bit then save it as 16 bit file -- assuming there's is no way to save it as 32 bit file.

 

my searches for this information and what functions I can perform in 32 bit are not giving me much clarity. The info. Is. Surely out there, but buried deep. In google mountain.

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Adobe Community Professional ,
Jul 12, 2020

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I hope I'm conveying my question accurately.

I believe I undersand. You want the file to open as 32bit. (There is no Camera Raw Preference to automatically open an image in 32bit.)

I want to post process as much as I can in 32 bit

In Photoshop- create a Action to change the Mode to 32bit. Then, after any image opens in Ps, you only need one mouse click on the action and you are in 32bit mode.

ScreenShot217.jpg

then save it as 16 bit file -- assuming there's is no way to save it as 32 bit file.

There is a way!- Save it as a .PSD or .TIF (as set in LrC Preferences). It remains as 32bit. (Do not involve DNG)

If you re-open a PSD or TIF from LrC- you must [Edit Original] and the image opens as 32bit.

My test re-opens a TIF from LrC with this mode set:

ScreenShot216.jpg

 

So my summary to your question-

1) One mouse click Action to set 32bit

2) [Save] as PSD/TIF

Regards. My System: Lr-Classic 9.4, Lightroom 3.4, Photoshop 2020 (21.2.1), Nikon DSLR, Windows-10.

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Adobe Community Professional ,
Jul 12, 2020

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Is there a chance that the instructor was merging multiple raw images into an HDR image in Camera Raw? Because that is one way that Adobe Camera Raw (and Lightroom Classic) can edit and send to Photoshop as a 32 bits per channel image (see video demonstration at that link).

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New Here ,
Jul 13, 2020

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Conrad_C

You are brilliant! That's exactly what he was doing. I wanted to do that from a single RAW image.

 

You said that is one way ACR can edit and send to PS as 32 bit. Is there another way? Can it be done from a single RAW capture?

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Adobe Community Professional ,
Jul 13, 2020

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This is the HDR assembly method in Photoshop. It has ACR render 16 bit files from a set of raw files and assembles these into a 32-bit composite. You can't do that with a single file as far as I know (never tried but I think the widget in Photoshop will not run if you only select a single file) and the result would be identical anyway to opening as 16 bit in Photoshop from camera raw and then converting to 32 bits. The latter would be fewer clicks than running through the HDR assembly dialog in Photoshop.

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Adobe Community Professional ,
Jul 13, 2020

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I don’t think it can be done from a single raw file.

 

The technique shown in the video combines the dynamic ranges of multiple raw files captured at different exposure settings, to achieve a single 32 bits/channel file with a dynamic range larger than a single 16 bits/channel file can store. If you have a single 16 bits/channel file, there’s no need to go through that procedure because all of the dynamic range in the file can obviously be stored in that file, since it already is.

 

If you’re looking for more editing flexibility because it’s too difficult or complex to show all of the highlight and shadow detail in one raw file in a single edit, there is another technique that might apply, depending on what you want. Some people import one camera raw file into Photoshop as a Smart Object layer, copy it so that it’s two or more identical Smart Object layers, apply different exposure settings to each (one edited to show the best highlight detail, another to show the best shadow detail, etc), and blend the best parts of each layer with the others using masks or Blend If sliders.

 

If you want to do that, make sure you duplicate the camera raw Smart Object using Layer > New > Smart Object via Copy, because other ways of duplicating the layer will apply the same Camera Raw settings to all of the duplicates. The command above creates a copy that’s disconnected from other Smart Objects of the same file.

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Adobe Community Professional ,
Jul 13, 2020

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Are you looking for a Lightroom Classic workflow? 32 bit is only relevant in Photoshop but even there, camera raw uses 16 bit math internally so the only thing you can do there is do a post-ACR conversion to 32 bits as camera raw cannot output more than 16 bit per channel. Lightroom Classic itself always starts from the original raw data and does all the math in a 16-bit rendering chain as it is essentially camera raw with a GUI wrapper around it. There is no need to go to deeper math as there is no way you can compound errors as you can in Photoshop with successive edits as the rendering chain always uses the original raw data and therefore you can't have successive errors compounding.

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