|
Post by mnhermit on Apr 23, 2013 9:27:06 GMT -5
Is there an appreciable difference between TIFF and JPG for storage purposes?
I'm scanning my dad's slides, have gotten around 250 done using TIFF and switched to JPG for a comparison and I don't see a big difference, I wondered if there is a reason to use one or the other. You know like - purity of color, or greater accuracy in the storage algorithm.
TIA
oh, and as a bonus question - any recommendations for on-line storage - mostly for sharing with family/friends, but also as a secondary backup? (most of the scans are about 50MB/pic)
|
|
|
Post by sekhmet on Apr 26, 2013 22:19:40 GMT -5
Save tiffs. Jpgs are a lossy format, that is, they degrade over time.
|
|
|
Post by jdd2 on Apr 28, 2013 6:16:16 GMT -5
Definitely not jpegs, but I'm not expert enough to offer the best alternative.
Maybe explore png?
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 28, 2013 8:25:34 GMT -5
TIFF is the right choice. It allows more precise editing control over the scanned file without the degradation that Sekh mentions.
|
|
Dub
Administrator
I'm gettin' so the past is the only thing I can remember.
Posts: 19,743
|
Post by Dub on Apr 28, 2013 9:20:35 GMT -5
Another vote for TIFF.
TIFF saves every pixel of an image along with its precise color, brightness, and gamma information. JPEG (.jpg) stores a compressed version of the image where some colors are approximated in the displayed image and the largest possible number of pixels are dropped. This makes for images that take up little space and move quickly through networks.
JPEG images don't degrade, per se, but every time one is brought into an editor and a new version is saved as JPEG, the compression algorithm performs its work on an image that is already inferior due to compression. After a number of re-compressions the image becomes noticeably worse even at monitor resolutions.
|
|
|
Post by mnhermit on Apr 29, 2013 10:11:30 GMT -5
Thanks for that info and advice. I have switched back to TIFF (most of the ones stored as JPEGs I'm hoping to re-save at a later date - we had originally had them scanned at Costco, but I wasn't happy with the resolution - slides from dad's tour in Korea in 52-53). Lots of 50 year old (or older) slides, it's kinda fun
|
|
|
Post by sekhmet on May 15, 2013 13:01:07 GMT -5
Dennis, I bet that is a wonderful collection.
|
|