On 02/01/2016 08:34 AM, Patrick Shanahan wrote:
Maybe a little of both coming from camera makers systems are proprietary, not open, and all outside access must be determined by good guessing and hacker analysis. The problem with writing to raw files is it changes the size, order and location of data withing the file. If any of those items become critical, the file is trashed. And much of exif is not standardized, a field in one vendors raw file may not be accepted in anothers or even the same vendor but a different camera/format. You have read hear of people seeing errors for incorrect unrecognized fields when trying to import photos.
This is really an incredibly weak argument when it comes down to it. it not only assumes "ALL" when it should state "SOME" in more than one place. Not all vendors are obscureationist. Not all vendors that *were* obscurationist still are. Not all hackers are incompetent. Some seem to know more about the innards of files and mistakes in the vendor software and their conversion algorithms than the vendors themselves[1]. Not all fields are documented, true, but we were only talking about the ones that were and that were implemented by the vendors under discussion. Much of the argument was based on the fact that the exif table had pointers and that altering the size of fields in the table would invalidate those pointers. This assumed the exif editor was unaware of the same. In turn this depends on (a) how well documented the file is and (b) how well the 'hackers' have uncovered details. It also assumes that that the exif editor coders are ignorant of all this and are ignorant of all the last 50 years of computing history about linkage tables. The flaws in the reasoning of these experts is only exceeded by their arrogance. https://en.wikipedia.org/wiki/Cherry_picking https://en.wikipedia.org/wiki/Proof_by_assertion https://en.wikipedia.org/wiki/Vacuous_truth [1] This isn't odd. Back about 25 years ago a vendor threatened to sue me for reporting a bug. "You couldn't possibly know that without access to our source". I had to depose a detailed example of how i had determined the bug. I also suggested how it could be fixed. And it was, but i received no acknowledgement. -- A: Yes. > Q: Are you sure? >> A: Because it reverses the logical flow of conversation. >>> Q: Why is top posting frowned upon? -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org