HDR has metadata removed
I've just started trying the HDR tool which in some cases works well. However, I just noticed that the metadata (shared by all 3 images used) is not being added. Is there a setting that will do this? If I remember then I'm able to add it back, so it is not a limitation of the resulting .dng file format. Thanks.
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If you export an image, for instance as a JPEG, then there are options in the export tools as to whether you include metadata or not with the JPEG. So I deduce from this that the inclusion of metadata when it creates the DNG would not be automatic. And anyway, if you think about it, there could be conflicts, and what metadata would then be included? if you are combining three differently exposed raw files in an HDR, they would not all have the same exposure information, so what could be shown? They would also not all have quite the same time stamp. And although you could have added the same keywords to all three raw files, you might not have done - what should the DNG show if you had added different keywords to the raw files? All of them, none of them, or just the ones they had in common?
So I suggest that automatic inclusion of metadata could be problematic, and the best thing is to add things like keywords after creating the HDR.
Ian
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what metadata would then be included? if you are combining three differently exposed raw files in an HDR, they would not all have the same exposure information, so what could be shown?
There ya go...
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Metadata can include Description, Headline, Persons shown (unlikely for HDR), Keywords, Location, etc. If it's not kept it's not kept. I just wanted to be sure there wasn't some setting I could change (like I've done for Output) that would retain this information in the HDR DNG.
I think it would also be possible to add the file names for the different files used into the HDR metadata. For example, I have Photo Mechanic set to record the original file name in the metadata when I download and rename using that program. This would be very useful. Unlikely they will put a programer on it.
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One set of metadata that could be automatically brought over is the geolocation. If you create an HDR image from a set of images it will always be the same geo location. Same is true for stitching pictures to a panorama.
Wouldn’t you agree?0 -
... only as long as the geolocation has in fact been recorded on all of the images.
Ian
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I would not make science out of it and look at this less dogmatic. Would all metadata need to be kept in the HDR ... likely no. Could some ... likely yes. E.g. exposure data might be a bad choice, I agree. But date captured, location, copyright, keywords, color coding, etc. should be possible and typically should the same for the single shots as well as the merged HDR. And for a precise time stamp or inconsistent data, a pragmatic approach could be to simply use the metadata of the first shot of the series. Everything would be better than today having nothing ... which is generally always requiring an additional step in another tool for fixing Exif etc. = not efficient + taking nerves of frequent HDR shooters like me.
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a pragmatic approach could be to simply use the metadata of the first shot of the series
Yes. Another pragmatic approach would be to use the metadata of the primary variant.
Everything would be better than today having nothing
Fully agree.
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