Originally posted by JayR
Once ive downloaded the images onto my computer, Ive spotted on just a handful of my pictures, some grey lines in the images, and the other day one-quarter of the image was lost. These grey sections have not appeared on the camera view screen before downloading.
Could it be something to do with my K7 processor?
Something about the way im downloading thats more susceptible to corruption? (I just use USB connection so far, have not *yet* picked up Lightroom)
JPEG more of a problem? I use more jpeg than RAW at the moment...
My K7 is still in warranty, so if its the former, I guess I'd like to know now!
If the file had (physically) data corrupted in the download (ie. media transfer), then it would fail to successfully load and display in your viewer app. Or your OS would surely squeal about it in no uncertain terms advising that your HD has a sickness that needs urgent medicine.
Addendum: just to clarify on this alleged 'corruption' issue, it's really a simple task to test the theory by hashing the original file on its media (CRC-32, MD5), and then do same on the copied file to other target media.
I keep 2 neat shellspace tools on my systems for that purpose, only need one though, pick either if you run Windows;
http://code.kliu.org/hashcheck/ http://beeblebrox.org/
I suspect that your issue is likely a colourspace/rendering problem, or some other simple graphics decode~render requirement that's out of kilter - do you have your stuff set to sRGB, or RGB, or maybe AdobeRGB?
Sophisticated graphics programs we use these days can play mind games by adjusting system wide things to suit themselves.
OK for those who know all the ins and outs.
I read somewhere the former (sRGB) is usually the best, universal, for PC/Web content display, though others here with more experience and expertise in this area this could better advise, and apparently some online webspaces eg. Flickr, give horrid display results for other that sRGB.
Good luck. Obtaining the good USB Card reader won't hurt matters either, esp for transfer speed advantage.
Ps: don't confuse the crude graphics codecs in Pentax firmware or equate it equal to your brutish computer and its equally exotic full blown GUI OS and software. Nor I'd suggest to blame your K7 here, it's adequate for its required display tasks, and if otherwise stable then no problem.
.R.