topic Re: DPP and HIF HDR PQ in Camera Software

DPP and HIF HDR PQ

johnrmoyer — Fri, 24 Feb 2023 13:56:51 GMT

In DPP, I experimented with HDR PQ. Since most web browsers will not display HIF, I then attempted to convert the HIF to JPEG. I am attaching examples of the results. I like the result produced by macOS Photos and the result produced by GraphicsMagick better than the result produced by DPP.

The HIF file saved from DPP looks really good on my iMac screen in the photos app, much better than in DPP. Since I have a screen capable of displaying HDR, it would be easier to see the edits in DPP HDR PQ mode if DPP would use the capability of the screen instead of converting to SDR.

Is there a way to get a similar export to JPEG result using DPP as when using macOS photos app or as when using Graphics magick? Thanks in advance.

Saved from DPP as JPG after editing without HDR PQsaved from DPP as JPG from HDR PQ edit modeHIF saved from DPP converted to JPEG by GraphicsMagick

HIF file saved from DPP converted to JPEG by macOS Photos app

Re: DPP and HIF HDR PQ

johnrmoyer — Sat, 25 Feb 2023 14:50:58 GMT

I found more information at https://www.color.org/whitepapers.xalter which is a standards organization and I hope this might be of interest to others.

Since JPEG is SDR only and the HDR PQ standard does not permit changing the curves, I increased the input dynamic range in DPP while still creating SDR output and did not do the HDR PQ in DPP. The result is SDR and JPEG so that it may be displayed in web browsers. The attached image in this post was compressed more using graphicsmagick so that it would be small enough to upload, so it does not have quite as much information as a JPG saved from DPP at quality 10. I used tone curves in DPP to approximate what I saw on a HDR PQ display in a JPG that may be viewed in a web browser. Another approach to this would be to always photograph this bird at -0.67 EV and brighten later in DPP.

I used "exiftool -G0:2 -h IMG_3356c2.dr4" to get a record of the edits I have done in DPP.

ExifTool	ExifTool Version Number	12.55
File:Other	File Name	IMG_3356c2.dr4
File:Other	Directory	.
File:Other	File Size	8.9 kB
File:Other	File Permissions	-rw-r--r--
File:Other	File Type	DR4
File:Other	File Type Extension	dr4
File:Other	MIME Type	application/octet-stream
File:Time	File Modification Date/Time	2023:02:25 08:19:31-06:00
File:Time	File Access Date/Time	2023:02:25 08:22:53-06:00
File:Time	File Inode Change Date/Time	2023:02:25 08:19:31-06:00
CanonVRD:Image	DR4 Camera Model	EOS R5
CanonVRD:Image	Rotation	0
CanonVRD:Image	Angle Adj	0
CanonVRD:Image	Check Mark	Clear
CanonVRD:Image	Work Color Space	sRGB
CanonVRD:Image	Raw Brightness Adj	-0.33
CanonVRD:Image	White Balance Adj	Daylight
CanonVRD:Image	WB Adj Color Temp	5200
CanonVRD:Image	WB Adj Magenta Green	0
CanonVRD:Image	WB Adj Blue Amber	0
CanonVRD:Image	Gamma Linear	No
CanonVRD:Image	Picture Style	Shot Settings
CanonVRD:Image	Contrast Adj	0
CanonVRD:Image	Color Tone Adj	0
CanonVRD:Image	Color Saturation Adj	1
CanonVRD:Image	Monochrome Toning Effect	None
CanonVRD:Image	Monochrome Filter Effect	None
CanonVRD:Image	Unsharp Mask Strength	2
CanonVRD:Image	Unsharp Mask Fineness	4
CanonVRD:Image	Unsharp Mask Threshold	4
CanonVRD:Image	Shadow Adj	0
CanonVRD:Image	Highlight Adj	0
CanonVRD:Image	Sharpness Adj	Unsharp Mask
CanonVRD:Image	Sharpness Adj On	Yes
CanonVRD:Image	Sharpness Strength	4
CanonVRD:Image	Tone Curve Color Space	RGB
CanonVRD:Image	Tone Curve Shape	Curve
CanonVRD:Image	Tone Curve Input Range	0 255
CanonVRD:Image	Tone Curve Output Range	0 255
CanonVRD:Image	RGB Curve Points	(0,0) (67,53) (158,157) (255,255)
CanonVRD:Image	Tone Curve X	67
CanonVRD:Image	Tone Curve Y	53
CanonVRD:Image	Red Curve Points	(0,0) (255,255)
CanonVRD:Image	Green Curve Points	(0,0) (255,255)
CanonVRD:Image	Blue Curve Points	(0,0) (255,255)
CanonVRD:Image	Tone Curve Original	No
CanonVRD:Image	Tone Curve Brightness	0
CanonVRD:Image	Tone Curve Contrast	0
CanonVRD:Image	Auto Lighting Optimizer	Standard
CanonVRD:Image	Auto Lighting Optimizer On	No
CanonVRD:Image	Luminance Noise Reduction	4
CanonVRD:Image	Chrominance Noise Reduction	4
CanonVRD:Image	Color Moire Reduction	2
CanonVRD:Image	Color Moire Reduction On	No
CanonVRD:Image	Shooting Distance	100%
CanonVRD:Image	Peripheral Illumination	100
CanonVRD:Image	Peripheral Illumination On	No
CanonVRD:Image	Color Blur On	Yes
CanonVRD:Image	Distortion Correction	100
CanonVRD:Image	Distortion Correction On	No
CanonVRD:Image	DLO Setting	50
CanonVRD:Image	DLO On	Yes
CanonVRD:Image	Color Hue	0
CanonVRD:Image	Saturation Adj	100
CanonVRD:Image	Red HSL	0 0 0
CanonVRD:Image	Orange HSL	0 0 0
CanonVRD:Image	Yellow HSL	0 0 0
CanonVRD:Image	Green HSL	0 0 0
CanonVRD:Image	Aqua HSL	0 0 0
CanonVRD:Image	Blue HSL	0 0 0
CanonVRD:Image	Purple HSL	0 0 0
CanonVRD:Image	Magenta HSL	0 0 0
CanonVRD:Image	Gamma Contrast	0
CanonVRD:Image	Gamma Color Tone	0
CanonVRD:Image	Gamma Saturation	1
CanonVRD:Image	Gamma Unsharp Mask Strength	2
CanonVRD:Image	Gamma Unsharp Mask Fineness	4
CanonVRD:Image	Gamma Unsharp Mask Threshold	4
CanonVRD:Image	Gamma Sharpness Strength	4
CanonVRD:Image	Gamma Shadow	0
CanonVRD:Image	Gamma Highlight	0
CanonVRD:Image	Gamma Black Point	+0.000
CanonVRD:Image	Gamma White Point	+2.000
CanonVRD:Image	Gamma Mid Point	+0.000
CanonVRD:Image	Gamma Curve Output Range	0 16383
CanonVRD:Image	Crop Aspect Ratio	3:2
CanonVRD:Image	Crop Aspect Ratio Custom	1.5 1
CanonVRD:Image	Crop Active	Yes
CanonVRD:Image	Crop Rotated Original Width	5088
CanonVRD:Image	Crop Rotated Original Height	3392
CanonVRD:Image	Crop X	179
CanonVRD:Image	Crop Y	70
CanonVRD:Image	Crop Width	4500
CanonVRD:Image	Crop Height	3000
CanonVRD:Image	Crop Rotation	0
CanonVRD:Image	Crop Original Width	5088
CanonVRD:Image	Crop Original Height	3392
CanonVRD:Image	Stamp Tool Count	0
CanonVRD:Image	Lens Focal Length	560

Northern Cardinal (Cardinalis cardinalis) in Norman, Oklahoma, United States on February 19, 2023

Re: DPP and HIF HDR PQ

Blueberry_Lover — Thu, 21 Nov 2024 08:24:58 GMT

Hi John,

Here's a workflow that I've been experimenting with:

Capture a full 45 megapixel image in HDR PQ using a Canon R5 (Mark I)
Transfer to a Mac mini M2 running Sequoia 15.1 using EOS Utility 3
Use DPP to reduce the resolution to approximately 20 megapixels (66% scaling) and export as HIF
Change the image extension from .HIF to .HEIC by renaming in Finder
Import into the macOS Photos app for editing
Export the edited image from Photos as HEIC using the *** Original Color Profile *** option
Open the exported image in Preview and use Adjust Color in the Tools menu to increase the exposure slider by about 40%. This is to workaround the Photos export being too dark for images with the HDR PQ colour profile.

If required, the resulting HEIC image can be easily converted to JPG (e.g. using right click in Finder followed by Quick Action>Convert Image).

The More Info pop-up in Preview should indicate a headroom (ratio of HDR to SDR brightness) of about 10 as shown below.

- Pie Lover

P.S. We love cardinals 🙂

Re: DPP and HIF HDR PQ

Blueberry_Lover — Mon, 25 Nov 2024 15:46:10 GMT

Hi John,

I believe that I've made some progress trying understand the Photos app (in Sequoia 15.1.1) for editing HDR PQ photos captured with my Canon R5 (Mark I). Please have a look at my post on the Apple Support Community forum for more details.

- Pie Lover

(converted to jpeg for viewing in web browser)

Re: DPP and HIF HDR PQ

Blueberry_Lover — Thu, 28 Nov 2024 22:04:17 GMT

John,

I believe that I found a workable solution for editing HDR PQ files using macOS Sequoia. Please see my latest update at this link.

- Pie Lover