Import JPEGs with Color Model: Gray
I'm migrating a lot of projects from Aperture. These projects mostly derive from film scans. The colour film scans were made by Labs, and are coming across fine. However, I scan the black and white films myself using Vuescan Pro on a Plustek 7500i. In my test folder, most of the black and white scanned images did not transfer over. Some did transfer successfully; these were scanned as TIFFs or DNGs. The ones that did not transfer over were JPEGs.
For all these images (JPEG, TIFF or DNG), Aperture's File Info panel shows "Color Model: Gray" while the EXIF panel shows the Color Profile as blank. If I use Preview to change the Color Profile of an image to "Generic Gray" it imports properly. However, there are many hundreds of these images, and I want to import them with adjustments, as far as possible.
Any suggestions?
(PS I did try to post on this yesterday, but it vanished for some reason! This time I'm copying the contents before hitting the Submit button!)
For all these images (JPEG, TIFF or DNG), Aperture's File Info panel shows "Color Model: Gray" while the EXIF panel shows the Color Profile as blank. If I use Preview to change the Color Profile of an image to "Generic Gray" it imports properly. However, there are many hundreds of these images, and I want to import them with adjustments, as far as possible.
Any suggestions?
(PS I did try to post on this yesterday, but it vanished for some reason! This time I'm copying the contents before hitting the Submit button!)
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Hi Chris,
Unfortunately, there are some limitations in Capture One when trying to work on images with a gray colour space (and with a too small pixel size) : it simply doesn't work.
In addition, make sure that the the "Enable JPEG editing" option is cross-checked in your "Preferences -> Image" tab.
Robert0 -
Thanks Robert... I have had a look at Preferences and the edit JPEG (and TIFF/DNG) boxes are all ticked.
The first part of you message is a bit confusing, although I'm sure this is me just being a bit thick (or at least, unused to C1Pro)! There was one folder of black and white scans, for example, where some were scanned to JPEG and some to TIFF. The latter transferred successfully. I've just checked the pixel dimensions of one of the latter: 3328 x 2264 pixels. It's a 16-bit TIFF, if that's what you meant; the corresponding JPEG (obviously 8-bit) is exactly the same pixel dimensions, scanned on the same scanner at the same time but did not transfer.
On most of the black and white images that did transfer there's a little grey and orange cross in the corner of the preview, and these images do not appear to be editable! C1Pro shows the "color space" for these images as SRB, but Aperture and Preview show the colour space as Grey and the color profile as blank.
Another set of images were scanned as positives (TIFFs or DNGs) as well as negatives (JPEGs). "Scanned as positives" means treating the negative as if it's a transparency/reversal/slide film; this initiates a different part of Vuescan. These TIFF/DNGs have transferred and are editable. Aperture thinks these have a color profile of Adobe RGB, whereas C1Pro is showing them as sRGB! Some other image in the same Project that were scanned as black and white negative TIFFs were imported but are not editable.
(I'm not sure if it's significant that the editable ones had filenames xxxx.tiff whereas the uneditable ones had filenames xxyy.tif ... I suspect not!) It is also noticeable that some images in that Project were also scanned with a trial version of Silverfast Plus SE on the same scanner. They too did not transfer!
Definitely going nuts here!0 -
OK, I've just checked again. I changed all the black and white images in another Project, in the Master images set, to the Generic Grey profile. They all imported properly. None of them are editable!
I think there must be some sort of bug here. How do I report it?0 -
Hi Chris,
The pixel size of your pictures complies with C1, so this is not the problem.
Could you please show this "grey and orange cross in the corner of the preview" you mention in your last message ?
And what is this "SRB color space" ? Anyway, all the pictures with a grey color space are not editable by Capture One.
I had a similar issue with some old black and white negatives I scanned a long time ago, unfortunately using a grey color space : Capture One succeeded in importing these images, but couldn't edit them. I had to go to Photoshop and transform the color mode from grey to RGB, one by one, and it worked then. Tedious !!
I think you could have a mess with color spaces and profiles, which could come from your scanning software. I use Silverfast Plus SE for my color, B&W and inversible color films, and I don't face any issue.
Robert0 -
[quote="ChrisR" wrote:
I think there must be some sort of bug here. How do I report it?
This is the support webpage address:
https://www.phaseone.com/en/SupportMain
Robert0 -
Thanks, I fund that and have submitted a bug report.
I've had lots of theories during this exploration. I don't yet have a complete theory on why some Projects won't import (though colour profiles seem to be linked), but my current theory is that C1Pro will not edit files with 8 or 16 bits per pixel (greyscale files), only those with 24 or 48 bits per pixel. If so, I'm a bit flummoxed as to how to proceed. If Phase One can't fix the problems, I can't see a way to transform my thousands of greyscale files into greyscale images in RGB files!
If so, it might mean the end of my Capture One Pro journey, which would be a shame. Otherwise, it looks like powerful software.0 -
[quote="ChrisR" wrote:
......my current theory is that C1Pro will not edit files with 8 or 16 bits per pixel (greyscale files), only those with 24 or 48 bits per pixel. If so, I'm a bit flummoxed as to how to proceed. If Phase One can't fix the problems, I can't see a way to transform my thousands of greyscale files into greyscale images in RGB files!
Yes Chris, this is what I said about the Capture One limitations : as Capture One is mostly devoted to color work, management and grading, they didn't think relevant to deal with greyscale color space images.
I had some, as I said above, and I transformed them into RGB spaces using Photoshop. But if you have thousands, the only way would be to find a batch process to do it.
Robert0 -
[quote="tenmangu81" wrote:
Could you please show this "grey and orange cross in the corner of the preview" you mention in your last message ?
And what is this "SRB color space" ? Anyway, all the pictures with a grey color space are not editable by Capture One.
I had a similar issue with some old black and white negatives I scanned a long time ago, unfortunately using a grey color space : Capture One succeeded in importing these images, but couldn't edit them. I had to go to Photoshop and transform the color mode from grey to RGB, one by one, and it worked then. Tedious !!
I think you could have a mess with color spaces and profiles, which could come from your scanning software. I use Silverfast Plus SE for my color, B&W and inversible color films, and I don't face any issue.
Robert
Thanks Robert. I guess I didn't really understand your earlier remark about grey images, as it was so far outside my concept of a modern image processing engine! But I'm gradually getting there.
The "SRB color space" should have been sRGB, sorry about that one!
Not really sure how to include an image here, but I hope this should lead to a screen grab of the preview with the little cross I mentioned... later, that didn't work, I'll try a straight link
[url]
https://www.dropbox.com/s/vz5s163rhcajn ... 3.png?dl=0
[/url]
I'm going to have to search for a batch way to convert my black and white images to 24 or 48 bits per pixel... ☹️0 -
[quote="ChrisR" wrote:
....a screen grab of the preview with the little cross I mentioned... later, that didn't work, I'll try a straight link...
Yes, that's it. It means "not editable".
Robert0 -
Some of my film friends put me on to a free program xnconvert on the Mac App Store. I just needed to set one option, select the folder with the images from a film in it, and press convert. It took 5 seconds for 37 images; not too bad at all! Maybe there's hope for me yet! 0 -
Good !!
Robert0
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