Lightroom: 5.3 Print Module Print-to-File Excessive Compression?

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  • Updated 4 years ago
  • (Edited)
I am using LR 5.3 on Win7 76-bit. I have found that the LR Print-to-File function in the Print Module renders a slightly inferior jpeg file image as compared to the exact same image exported directly from the Develop or Library module: a raw file exported to jpg, both methods with 100 as the jpeg quality and with the same resizing. I have noticed this both with and w/o print sharpening applied via each method.

The effect seems magnified with print sharpening, as if the sharpening in the the Print Module is coarser than from direct export print sharpening, however I’m not totally sure of that. The problem is noticeable w/o any print sharpening in any case, and it eliminates one variable from the comparison.

I noticed this on finely detailed landscapes (taken with a 36mp 35mm-size sensor digital camera). The print-to-(jpeg)-file function in the Print Module apparently compresses the file more than from the direct export, as the actual file size from the Print Module generated jpg is less than the actual file size of the direct export file, even though the pixel dimensions in both files is the same.

The image difference is a comparative lack of sharpness for the print module file, and using the print sharpening option (of whatever strength) does not compensate for it, as it just seemingly applies a very coarse type of sharpening that, for my photos in question, just degrades the image further.

So, either there is something about LR and using the Print Module I am overlooking, or there is something amiss with the Print Module Print-to-File processing.

Thanks in advance for your help in this matter.
Dan
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Dan

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Posted 4 years ago

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Dan

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Attached is a comparison of a cropped section of the two output files. The file from direct export is 14.128mb, and the one from the Print Module print to file is 12.472mb. They both are 4800x3000 pixels (and is a crop portion of the original camera raw file).