Image capture, tiff and photoshop issues on the Mac

I don't have a collection of corrupted image files as I noticed it right away. I will have to look into Graphic Converter as a possible work around, but submit an bug report. Maybe if enough of us do that, Apple/Adobe will fix this

So Ed, why saving the file as a tiff without the alpha check doing? Any clues?

The images I downloaded from you, both JPG and TIFF, are tilted within a rectilinear frame. The Alpha Channel controls transparency. I suspect the TIFF image has layers, but are flattened for JPEG output. Unchecking the "Alpha" option in Apple Image Preview then reserving would have the same effect.

 

As Digitaldog writes, there are many differences between Apple and PC representations for TIFF files. These options are visible when saving a file from Photoshop on both platforms. If there is an option, the PC version is more universally acceptable. I had the same problem opening the file in Adobe Illustrator, which probably uses the same graphic engine as Photoshop.

 

When re-saving the file, Apple Viewer defaults to JPEG compression on a TIFF file. That may mean the original file has JPEG compression, which i can't confirm. Changing the compression to "NONE" does not restore the file to read properly.

 

As an aside, the opposite is true for video files, due to the way audio and video are interleaved. Apple files read perfectly on either platform, whereas PC files stutter and break up on Apple.

 

I'm in the middle of something, but will make a screen shot from the Apple screen, and see if I can open the TIFF file properly in Windows.

Try scanning from Preview instead of ImageCapture. To do this, open Preview when your scanner is connected. Under the file menu, you should see "Import from Scanner...."

 

That may help. I think the file will be imported as a JPEG though.

I don't have a collection of corrupted image files as I noticed it right away. I will have to look into Graphic Converter as a possible work around, but submit an bug report. Maybe if enough of us do that, Apple/Adobe will fix this

If you don't have to batch resave, probably don't need it although it's a great app that's saved my butt a few times over the years (opening files PS couldn’t, resaving so it could). Probably just avoid Image Capture and use something that isn't going to produce a TIFF that's wonky when scanned in color. OR scan without any rotation and fix later in Photoshop (time consuming indeed). You might look into SilverFast if it drives you scanner. It can rotate as you scan if so desired.

Try scanning from Preview instead of ImageCapture. To do this, open Preview when your scanner is connected. Under the file menu, you should see "Import from Scanner...."

 

That may help. I think the file will be imported as a JPEG though.

 

Yes, you can scan while in Preview, but it opens a window that looks like Image Capture. You can save as a tiff, but if you try to open the tiff in Photoshop it is corrupted.

 

To me this seems like a very fundamental problem with the interaction between Image Capture and Photoshop when working with Tiff.

 

@ed, were you able to test this out on a PC?

Sorry, but the same problem occurs in Photoshop CC and Win7.

@ed. How would you scan an print on a PC. Doing the whole thing on a PC, does it still have a problem?

I use the software which comes with the scanner, I crop roughly in the preview screen, and clean up and straighten in Photoshop. Photoshop, incidentally, calls up the same program when scanning directly.

 

I use the ruler tool to mark a line on the scan I wish to straighten. The angle appears in the image rotation menu as a "random" angle, typically under 1 degree. Resampling is required unless the rotation is an increment of 90 degrees. I suspect that the straightening function of your current software is corrupting the TIFF file.

my scanning software does not allow for rotated capture areas. If I capture perfectly horizontal, then everything seems fine. Digitaldog said something very curious. If he scanned in greyscale with a rotated capture area, it was ok. The problem only seemed to occur with color scans.

I can reproduce the bug. I was going to file a report with Apple, but I notice two things:

 

1. Apple's Finder shows a correct Preview of the file.

2. Apple's Photo App has no problem importing

3. Lightroom CC cannot show the preview.

4. Lightroom reports "unsupported compression algorithm"

 

I think that the problem is with Adobe rather than Apple. If there is someone from Adobe following this thread, can you file an internal bug report please?

 

If you can persuade me that it is an OS X issue, I will file an error on bug report.apple.com

 

...Michael

Edited April 13, 2018 by michael_levy|3

Also, see Cannot import TIFF files into lightroom cc. Er... | Adobe Community

I can reproduce the bug. I was going to file a report with Apple, but I notice two things:

 

1. Apple's Finder shows a correct Preview of the file.

...Michael

I see this too, but I suspect it's the thumbnail which is fine while the document itself is hosed.

Tried LR, saw the same issues.

I can file a bug report with Adobe but consider that they own and control TIFF and it's probable they will suggest that the issue is Apple not following their spec's.

Mac users who work with Epson printers for awhile should recall the back and forth bugs printing with Adobe app's like Photoshop and the blame game that resulted. Fortunately that has been worked out for a few years now, but trying to get this fixed will take a lot more time and effort than simply avoiding Apple's Image Capture and/or Adobe products. The former is a lot easier.

I see this too, but I suspect it's the thumbnail which is fine while the document itself is hosed.

Tried LR, saw the same issues.

 

No - the scan imports just fine into Apple's Photos App. Its just Lightroom that complains about the "unknown compression"

Been traveling so just read the thread today. I have called Adobe and talked with them for about 2 hrs. They did not have a mac available with the current OS with a scanner attached to see if they could reproduce the problem. Said they would call back in 48 hrs, but that was 5-7 days ago. I will try to call them again and see what they have found out!

Adobe without a Mac! Did you get a wrong number? I thought everyone had a half-eaten apple.

I am not kidding. They had a mac, but with an old OS.

They did not have a Mac available with the current OS with a scanner attached to see if they could reproduce the problem.

Adobe without a Mac! Did you get a wrong number? I thought everyone had a half-eaten apple.

I would be hard-pressed to find an operational PC at this point, and nothing newer than Windows 7 ;) My go-to scanner runs from a USB connection only, so connection to a different computer would be easy.