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There are a few ways to recover a blown out sky. One is to use the Recover Highlights function in the app (in the area with Auto Enhance).
That can be a good first start. Then you can tint the highlights using the Split Toning adjustment if you like. You can also consider HSL.
The channel mixer is a simple and yet hard to understand tool – it’s not for this purpose.
Any mask can be limited by luminance or color. If you want a basic luminance mask, do this:
1. Make a new brush mask
2. Click Fill
3. Go to the options area (looks like overlapping squares).
4. Move the luminance sliders.There is a bug right now where the mask does not live update as you move the sliders. That will be fixed in the next release.
At some point, I may just add a mask that does that in one step, but that’s how you do it now.
Yes, that works as long as you don’t have a RAW+JPEG pair. When you have P2200192.RW2 and P2200192.JPG and you edit both, then both would get the same XMP file name – P2200192.XMP. What happens then?
I am using Apple’s PhotoKit which is the library Apple provides to interact with the Photo Library. When I delete an image, I am asking Photos to delete it (because Photos has to update the library and such). If Photos does not actually delete the image, there is nothing I can do about it. Sorry. I will guess that they don’t delete referenced files because they don’t know if those images are shared by other apps.
XMP is a tricky thing. There are two main ways to store XMP data. In a sidecar and by writing directly to the original image. Some people prefer one, others prefer the other. I try to avoid writing to the original because of the chance of data loss / corruption, which can definitely happen in these cases.
For proprietary RAW files, only sidecars are supported by apps (in general) due to their proprietary nature. For DNG, JPEG, etc., the XMP can be written inside (again, I don’t do that, but may in the future).
The name that Nitro uses for JPEG and DNG is _
.xmp. That’s to handle the case of RAW+JPEG. If you have an R+J pair and edit both of them, both would get named abc.xmp which would cause a collision. That’s why I use _ .xmp for DNG, JPEG, etc. However, this causes issues with other apps that aren’t doing that. There is also the problem of case-sensitivity. While macOS is not case-sensitive, iOS is, so the file name always uses lower-case convention. This is also what Adobe does. I do not understand why Graphic Converter would replace the JPEG with XMP – do you really mean that Graphic Converter replaces the JPEG with an XMP (rather than have two files)? That’s very odd.
Earlier in the app’s development it worked that way, but other beta testers were unhappy with that behavior. That’s because the image moves, and it made people have to hunt around the image. I will note your request, but I can’t promise anything.
Yes, I can see that, but it would complicate the UI. Right now, there is a single button: on / off. Adding a different choice requires a menu or something like, and crop is already complicated.
