What is the best way of dealing with large JPEGS?
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11-01-10, 05:11 PM
Join Date: Jul 2009
Originally Posted by
Hi. I am new to this bit of pictures. I have 120 format negatives of our wedding that have been scanned using a high quality film scanner. I saved the files as high quality JPEGS scanned at 2400 or 4800 dpi as TIFF meant the file size for each was between 500Mb and 1Gb!! They are now around 10Mb each.
These have scanned rather well but some have tiny dust particles which the dust remover function missed and need a little touch up. I can do this perfectly well in Photoshop but that means saving again which is a no-no.
I have tried it and it looks great but am concerned should we wish to request a large print in the future. If I touch up a copy of the picture, what is the best setting. Or if they were scanned at the highest setting, would saving at the highest setting be fine - after all, the majority of the picture hasn't altered. It does create a file size about 20% larger though?!?!
Your thoughts and help is greatly appreciated!
When you initially saved them as jpegs you immediately lost around 20% of the light values each scan had as a jpeg automatically edits the image based on the parameters that have been set and discards what it doesn't need. It would have been far better to scan them in at 600dpi, as that is about the maixmum most printers can achieve and saved them as TIFFs. Even most 20x16 prints are printed at about 300dpi so scanning above this is a waste of time because you're unlikely to ever need such a high resolution image. Unless of course you're going to have them printed on the side of a number of large buildings!
Once saved as Tiffs you can edit them without any fear of further loss and Photoshop will also keep a record of what editing you've done to them and saves this information with the file, hence the reason the file size expands.
Hope this helps.
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