flavio Posted August 26, 2007 Share #1 Posted August 26, 2007 Advertisement (gone after registration) the lab usually scanned my slides has changed the way they used to work and gave me a CD with JPG pictures saved. If I re-save the Jpg in TIFF, pictures appear to change from around 7 MB (JPG) to 27 mb. It is a way to work that (I admit) I did not know. The question are: is this a proper way to act and are pictures as good as may be when they save directly in TIFF or something may change? Thanks in advance for your help. Link to post Share on other sites More sharing options...
Advertisement Posted August 26, 2007 Posted August 26, 2007 Hi flavio, Take a look here Scanning Tiff or Jpg. I'm sure you'll find what you were looking for!
andybarton Posted August 26, 2007 Share #2 Posted August 26, 2007 Hi Flavio Scanning to jpg inevitably means that the images are 8 bit colour and saving as TIFFs will not change that. You can resave a tiff as 16bit colour, but you will never be able to regenerate that half of the colour information lost in the original jpg. However, saving the jpgs as TIFFs or PSD files is an excellent idea if you wish to do some PS tweaks on them, as jpgs lose quality every time they are saved. TIFFS and PSD files do not. It's a pity that most commercial scanning people can't or won't scan to 16 bit TIFFs, but that's the advantage of doing it yourself. You have more control right from the start. Link to post Share on other sites More sharing options...
flavio Posted August 26, 2007 Author Share #3 Posted August 26, 2007 Andy, thank you for your replay. Its true: almost everytime I take back my scanned slides I am not completely satisfied and this last time appear to be one of the worst. Unfortunately this is not the best time to purchase a good scanner (these are words from my wallet) :-( Link to post Share on other sites More sharing options...
flavio Posted August 27, 2007 Author Share #4 Posted August 27, 2007 Andy or other friends, sorry for the likely "super beginner" question: is there a way to realize when a Tiff file is saved 8 or 16 bit? Thanks! Link to post Share on other sites More sharing options...
andybarton Posted August 27, 2007 Share #5 Posted August 27, 2007 You need to open the image in Photoshop, and check in the Image/Mode menu. There will also be a big difference in file size, of course. Link to post Share on other sites More sharing options...
flavio Posted August 27, 2007 Author Share #6 Posted August 27, 2007 Hi Andy, I have some older 27 mb pictures directly saved in Tiff by the lab. Since they appear to be the same size of the newer files (when saved in Tiff from 8 mb Jpg), I'd like to understand more about. I do not use PS but Apple's Aperture, so I'll try it out or maybe you know how it can be used? Thanks! Link to post Share on other sites More sharing options...
jacksparrow Posted August 27, 2007 Share #7 Posted August 27, 2007 Advertisement (gone after registration) Falvio, I think you might find this link useful: Image file formats - Wikipedia, the free encyclopedia Link to post Share on other sites More sharing options...
flavio Posted August 27, 2007 Author Share #8 Posted August 27, 2007 Ciao Eugenio, thanks for your helpful suggestion. Now, also thanks to an Apple Aperture Forum suggestion by Ian Wood, I realize how to be aware about the 8 or 16 bit in my software. Unfortunately 100% of my slides were scanned 8 bit. This may be one of the reason why I do not completely like them comparing the original slides? Andy and Eugenio: Thanks for your collaboration. Link to post Share on other sites More sharing options...
rafael_macia Posted September 8, 2007 Share #9 Posted September 8, 2007 Falvio, I think you might find this link useful: Image file formats - Wikipedia, the free encyclopedia Good link compadre ! thanks Rafael Link to post Share on other sites More sharing options...
rafael_macia Posted September 8, 2007 Share #10 Posted September 8, 2007 Falvio, I think you might find this link useful: Image file formats - Wikipedia, the free encyclopedia Good link compadre ! thanks Rafael Link to post Share on other sites More sharing options...
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