Luminous Landscape Forum

Raw & Post Processing, Printing => Digital Image Processing => Topic started by: MrIconoclast on May 16, 2013, 10:10:24 am

Title: Saving Tiff files
Post by: MrIconoclast on May 16, 2013, 10:10:24 am: I have large number of photos I am saving in the Tiff format. They are two to three times the size of the RAW file.

Is there a way to reduce the size of the TIFF files but not lose any image quality?

thanks.
Title: Re: Saving Tiff files
Post by: PeterAit on May 16, 2013, 10:33:24 am: Saving TIFF from what program?
Title: Re: Saving Tiff files
Post by: Jack Hogan on May 16, 2013, 01:58:04 pm: If you are a Nikon man, you may want to try Capture NX2. It holds everything (including the original raw data, subsequent global and local adjustments, plus a final Jpeg) in a neat tight package called a NEF. Entropy.

Jack
Title: Re: Saving Tiff files
Post by: aduke on May 16, 2013, 02:43:31 pm: Quote from: MrIconoclast on May 16, 2013, 10:10:24 am
I have large number of photos I am saving in the Tiff format. They are two to three times the size of the RAW file.

Is there a way to reduce the size of the TIFF files but not lose any image quality?

thanks.

Yes there is, save the TIFF's with a zip-compression, which is lossless. Your raw file is n-MegaPixels of, at most, 16 bits. The tiff file is n-MegaPixels of, at least, 24 bits, and probably should be saved as 48-bit pixels, so the tiff will be larger than the raw without compression.

Alan
Title: Re: Saving Tiff files
Post by: MrIconoclast on May 16, 2013, 08:22:35 pm: I am using PS6. I save with no compression at the moment, but I am wondering if the LZW compression will help. But, I do not want to lose image quality.
Maybe I should buy a larger hard drive. :-)
Title: Re: Saving Tiff files
Post by: aduke on May 16, 2013, 09:47:03 pm: A Google search on LZW produced the answer, it is non-destructive.

Alan
Title: Re: Saving Tiff files
Post by: Schewe on May 16, 2013, 11:21:48 pm: If you are using 16-bit, you'll want to use zip compression as LZW can actually end up producing larger files compressed than uncompressed...
Title: Re: Saving Tiff files
Post by: craigwashburn on May 17, 2013, 05:18:07 pm: It used to be that LZW was better supported than zip in other programs, so I tend to default to LZW except for 16 bit.