posted on May 12, 2001 08:24:48 PM new
Can someone enlighten me on what is happening to my jpegs? They are clear on my 'puter, load them to Auctionwatch or Ipix and they sometimes become impossible to read, as a title on a book spine. Why is this? I've tried increasing dots per inch and using the sharpen feature. Have not figured out my digital camera yet, still scanning.
posted on May 12, 2001 08:58:47 PM new
Because these picture services desharpen and compress the pix to save space. If they let everyone upload their 100K jpg files without any compression, their disk space costs would go through the roof.
posted on May 12, 2001 09:27:37 PM new
I still don't understand why this doesn't occur every time--only sometimes. They are under the limits given by Auctionwatch and Ipix. I never seem to have a problem when I'm trying to get a scan of something that is a picture, like a dust jacket. Just spines or plain book covers. Plain books look muddied. Clues?
posted on May 12, 2001 11:29:10 PM new
Please post a sample. If you have a place to web it where it looks good, do that too. That would attract a lot of analysis to your problem.
posted on May 12, 2001 11:33:57 PM new
It may be that the book jackets have contrasting colors that display better at low resolutions than the solid greys and blacks of many books.
I'd suspect that you're compressing the jpg's twice-- once when you initially save them on your computer, and the second time when AW or IPIX gets ahold of 'em (IPIX is notoriously bad resolution-wise).
When you initially "save as" a jpg, you have a setting/option called either "quality" or "compression" or something similar. See what it's currently set at. Then change the setting to make less compression (= higher quality). This will make your file sizes larger, but it may solve your problem.
