Originally posted by junyo On Flickr, you choose whether or not to display EXIF data, but it doesn't strip anything.
That might be true for Pro accounts, but it doesn't seem to be for free ones. My images all show up with no EXIF when looking at the image in an ordinary viewer (ie, not display the properties from within Flickr).
Quote: I respectfully disagree on the matter of visible copyright notices. No, it won't stop a determined thief, but neither will metadata. It's a really trivial matter to strip the tags from a file, less trivial than removing a well designed graphical watermark.
This is true, and it's important to mke a few distinctions here:
- The existence of a copyright message - visible or otherwise - currently has *no bearing whatsoever* on your ownership of the copyright to the image in the US (might be different in other countries, and is likely to become different soon in the US). But as it is right now in the US, if you created the image, you own the copyright, period, whether you advertise that fact or not. So it's illegal for someone to use your image without your permission whether you include a copyright message or not.
- However, the existence of a copyright message certainly makes it more clear who owns the copyright (or claims to, anyhow), so if someone wishes to use it and they are considerate enough to want to ask permission rather than simply try to get way with using it without permission, they know who to contact. Actual contact info is better than the copyright message itself for this purpose, though. And again, IPTC metadata is your friend here - that's a good well-known (within the industry) place to store that kind of info without ltering the appearance of your image.
- Copyright message or not, the burden of proof that you own the image is still yours unless you've actually taken the time and spent the mone to *register* your copyright with the Library of Congress (again, details differ in other countries). Don't imagine that putting copyright message in the IPTC, or right on the image itself - proves you created it. For all anyone knows, you simply stole an image from somewhere else and put your copyright info on it. Of course, with a watermark, if you can produce a version of the image without the watermark and the offender can't, then at least you will have successfully demonstrated that *he* didn't create it. You won't have proven *you* did, though. I'm sure there have been court case where this has come up, but I don't know what precedents exist.
Quote: In the end, there's not perfect solution, you do what you're comfortable with.
Precisely. As I see it, people who are intent on stealing will do so if they want to and it doesn't seem unduly difficult. People intent on doing things legally and ethically will ask permission. Your task is simply to discourage the former and encourage the latter by whatever means you feel comfortable with. A copyright notice and contact info *somewhere* - IPTC or watermark - will help encourage people to contact you. A visible watermark might help discourage outright theft (by making it harder to use the image). An invisible watermark would only be effective at catching someone *after* the theft has been committed, assuming the theft comes to your attention at all. But a visible one might also create enough of a negative impression in the minds of well-meaning viewers that they don't bother to contact you but instead contact someone whose images are *not* marred by a visible watermark. Whether you personally feel the watermark detracts from the image is immaterial; the fact is, lots of viewers do, so that's something that should be taken into consideration. Maybe that's OK with you - you can't be bothered to try to impress viewers who would be turned off by a watermark. Depends on what your goals are for your images, really.