Timeline for Can we measure size of an object using EXIF data from a photo?

7 events

when toggle format	what		by	license	comment
Dec 19, 2015 at 23:25	history	edited	hokkuk	CC BY-SA 3.0	added 509 characters in body
Dec 19, 2015 at 23:15	history	edited	hokkuk	CC BY-SA 3.0	extra clarification.
Dec 19, 2015 at 23:05	history	edited	hokkuk	CC BY-SA 3.0	extra clarification.
Dec 19, 2015 at 22:59	history	edited	hokkuk	CC BY-SA 3.0	extra clarification.
Dec 19, 2015 at 22:45	comment	added	hokkuk		I mentioned how to work out the size of something in the comments, and then mentioned that this app does this, but uses "estimates" for some of those important pieces of data that the comments call out for.... and why the app needs "one known length" to correct because of those "estimates" used, if you have exact info in those key areas as mentioned in the comments, then this app wouldn't need the "one known length", and it also does several of the steps needed, including steps that the other comments had left out, like working backwards to find the tilt and yaw of the image frame.
Dec 19, 2015 at 20:13	comment	added	MikeW		I don't think this in any way answers the question. This app just computes relative lengths of things when one length is known. The question relates to working out the size of something, like a bird, from EXIF type info such as focal length, focus distance etc.
Dec 19, 2015 at 17:44	history	answered	hokkuk	CC BY-SA 3.0