webdove

You might consider adding a max nits override in preferences. Those of us using HDR TVs for monitors won't have correct values from the OS which renders the Clip warning inoperative.

My monitor is an LG CX TV so there is no DDC/CI interface. Many people use this configuration, so you need to allow the display max nits to be set directly or the clip warning function will be useless for us.

Affinity photo 2 is showing 3400 nuts for the clip warning max. My LG CX is calibrated for 750 nits. Why is affinity using 3400 and how can I change that? Thanks Web

I second this request. The documentation says "HEIF open 4 Includes depth map, loaded as second layer. Depth maps are upsampled." it should also say "HEIF open does not support the iphone gain maps that render the image in HDR" so we would all understand that for the moment the iphone HDR heic images cannot be properly opened with Afinity Photo 2.

Hmm. Gimp reports differently DxO tif export source image is 16-bit gamma integer. exr export is 32-bit linear floating point. hdr is 32-bit linear floating point. jxl is 32-bit linear floating point. webp is 8-bit gamma integer. avif (converted with ImageMagic from jxl) is 16-bit gamma integer. I guess I would believe gimp over irfanview.

I just noticed something else. Export exr uses 8bits/color, webp uses 8bits/color, jxl uses 32bit float/color. So only jxl preserves the image quality fully. I checked using irfanview so I could see the detailed properties of the files.

My one remaining puzzle is how to convert any of the export HDR forms in affinity to avif which is the only form that can be viewed with a browser. ImageMagick sounded like a possibility, but that failed.

How do you quote another message within a reply in this forum app?

I wanted to look at the original 14bit image from the camera which is wider gamut than sRGB.

Ah. I restarted and set my HDR Calibrated Profile as the windows default. The monitor is in HDR mode. I was able to export DxO as 16-bit tif and prophoto RGB colorspace. Then I imported it to affinity and changed the format to RGB/32 and the colors were preserved properly relative to their appearance in DxO.

I did the convert to RGB/32, that seemed to reduce the saturation a lot. I wonder why.

Gimp is able to import the 16-bit tiff and export exr or jxl which affinity likes, but they seem to have different color profiles.

It does not appear so.

Hi, I found the only way to export a DxO Wide Gamut for use in affinity is by using Tif 16-bit and the Rec.2020 color space. The image stemmed from a Raw Sony A7RV camera. No modifications were performed in DxO, only export. DxO was using the DxO Wide Gamut internal colorspace. Affinity appears to have imported the image properly. The header says RGBA/16 - Rec.ITU-R BT.2020-2 and the colors look similar to the DxO app colors. However, I cannot engage 32-bit preview. I have an LG OLED CX and Nvidia RTX 3080ti. If I load exr or raw or jxl images using Affinity Photo 2 I can enable 32-bit Preview, but DxO cannot export in those formats. How can I get affinity to switch to a 32-bit Preview if it has loaded a valid 16bit RGB image which is defined in a wide-gamut color space? Thanks Web