{ 3 comments… read them below or add one }

David Riecks September 19, 2009 at 6:41 pm

Another good resource about Photo Metadata standards and how to use them can be found at http://www.photometadata.org/ and includes several tutorials on how to add and read metadata such as IPTC and XMP using applications such as Adobe Photoshop, Bridge, Lightroom, Expression Media, and Photo Mechanic.

David

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vlad November 18, 2009 at 5:11 pm

Thank you David for pointing me to photometadata.org. It does contain good information about image metadata.

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Art November 30, 2015 at 10:44 pm

As you’ve discovered, most popular print places and photo sharing sites will convert your uploaded photos to jpg if you haven’t already done so before uploading. No, you’re not really gaining anything in print quality by scanning to .tiff IF you get prints done by an on-line company. You could likely get the benefit of your .tiff files if you put them on CD/DVD or USB stick and go to a place like Costco or other bricks-and-mortar store that offers digital printing.While your .tiff files will take up more space for archiving, you retain more detail and quality for your archives with .tiffs. EVERY time you make a change to a .jpg and save it, you discard more detail and quality. You’d be better to scan routinely to .tiff, do any desired editing to the .tiff, then save an edited copy to .jpg for on-line printing or photo sharing. One reason for the on-line companies converting everything to .jpg is simply that .jpg files are much smaller than .tiff files so they upload and download much more quickly and require less server space on their computers.If your scanning software (EpsonScan and VueScan both do) and image-editing software (Photoshop Elements, Photoshop CSx, and some other programs do) offer the option to scan at 48-bit color instead of 24-bit color, using this option will give better color quality in your scans. While your monitor and any printer won’t be able to reproduce such a large range of colors, they do give better results when you do any editing or color-correction to your scanned images. To benefit from this color range, you must scan as .tiff since the .jpg format is limited to 24-bit color. When you’re done editing, save a COPY of your edited image as .jpg for viewing, sharing, and printing but keep your original .tiff with all the colors in case you later decide to re-edit for any reason. Feel free to contact me via Curtis’s blog if you have any questions about this. Art Taylor

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